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Military history of the Sui–Tang dynasties

The Tang dynasty at its height in 660

The military history of the Sui and Tang dynasties encompasses the period of Chinese military activity from 581 to 907. Although the Sui dynasty preceded the Tang, it was extremely short lived, ending in 618. The two dynasties share many similar trends and behaviors in terms of military tactics, strategy, and technology. It can therefore be viewed that the Tang continued the Sui tradition, or that the Sui set the precedent for the Tang dynasty.

Contents

OrganizationEdit

 
The ten jiedushi in 745
 
The 48 buffer towns in 820

The Sui dynasty inherited the Twenty-four Armies from the Northern Zhou. The system of recruitment that created these armies would come to be known as fubing, or "territorial soldiery". Fubing soldiers were originally recruits drawn from the old military households of previous dynasties. Unlike the mass conscription of the Han dynasty, these soldiers were promised tangible rewards such as exemption from taxes and labor for their families. Later on, these soldiers were formed into units presiding over a plot of land on which they would farm while off duty to support themselves. At its height under the Tang dynasty, some 600 units of fubing were maintained, each with 800 to 1,200 soldiers. During the Sui dynasty, the fubing answered only to local administration, but the Tang implemented a centralized Ministry of the Army to which fubing units were answerable to. Each unit was further subdivided into battalions of 200, platoons of 50, and squads of 10. They rotated in and out of the capital for guard duty and training depending on their distance to it. Those nearest to it served one month in five, those furthest from it, two months out of every eighteen. Some men were assigned to three year tours in frontier garrisons. Deployment of the fubing units was monopolized by the court through the use of bronze tallies with the names of each unit on them. Half of the tally was kept at the Credentials Office while the other half was kept at unit headquarters. Only when the two halves were joined together could a unit be mobilized.[1][2]

Due to the fact that they combined military service with farming, the fubing have sometimes been characterized as a “militia” by Western authors. With its connotations of low quality and ineffectiveness (especially on account of the implied contrast with a “professional” soldiery), this term is rather misleading when used in connection with the fubing. Given their life-long military service and the training they received over that period, it would be more accurate to view them as a special type of professional soldier.[3]

— David Graff

While the fubing was well suited to local conflicts and short term campaigns, its shortcomings became apparent in the late 7th century as protracted wars and the needs of permanent static defense took their toll. The initial benefits of entering the system wore off as more men died in wars in far off lands, never to return. The military structure was not suited to properly reward soldiers who performed meritorious service in battle. Many who were supposed to be rewarded and compensated were not. Families of dead soldiers were also not compensated properly, resulting in reduced morale, and widespread desertion as well as dereliction of duty.[4] The geographical distribution of fubing units was highly unevenly distributed, with the northwestern part of the empire shouldering most of the burden, while two thirds of the empire contained not even one unit of fubing.[1] With so many units concentrated in one region, the government found it difficult to find enough farm land for their soldiers, who also competed with regular farmers under the equal-field system.[5]

The fubing system was gradually replaced with a standing army. First, frontier garrisons were taken over by permanent troops known as jian'er in 677. In 710, frontier forces were bolstered to withstand invasions without the help of levied troops. Nine frontier commands were established, each with their own defense army and military governor, the jiedushi. In 737, the court decided to replace irregular troops entirely with permanent soldiers, recruited from volunteers in the general population. The fubing system was abolished in 749.[6] The shift to a permanent army resulted in a sevenfold increase in the defense budget, from two million strings of copper cash in 712 to twelve million in 742, and then fifteen million by 755.[7]

The king of India has many troops, but they are not paid as regular soldiers; instead, he summons them to fight for king and country, and they go to war at their own expense and at no cost at all to the king. In contrast, the Chinese give their troops regular pay, as the Arabs do.[8]

— Abu Zayd al-Hasan al-Sirafi

By 742 the frontier had been organized into ten regional military commands. Nine were headed by jiedushi. The post of jiedushi was an imperial commissionership with authority over the military, public revenue, and state lands. In essence, it was a provincial governorship. One jiedushi eventually rebelled in 755, causing the An Lushan Rebellion. Despite its defeat in 763, the number of jiedushi proliferated in response to the rebellion and had increased to approximately 40 by its end. The Tang court failed to reign in the northeastern jiedushi in particular and the balance of power seesawed between the two forces until the Huang Chao rebellion from 874 to 884. The Tang dynasty then collapsed.[9]

Army operationEdit

According to the Tongdian (Comprehensive Canons), an expeditionary army consisted of 20,000 men in seven divisions of 2,600 or 4,000 men. Only 14,000 were actual combat troops while the rest guarded the baggage train. Of those 14,000, there were 2,000 archers, 2,000 crossbowmen, 4,000 cavalry, and the rest regular foot soldiers. Twelve thousand men were to be provided with armour.[10]

The basic operational tactical unit was a platoon of 50 men, fixed five ranks deep. It had five officers: commander, deputy, standard-bearer, and two color guards. For every six platoons, one guarded the baggage train. When the entire army was deployed, the troops were formed into two lines with cavalry at their flanks. Movements were communicated with drums and gongs. Drum beats to advance and gongs to halt. Directions came from five flags, each with a different color to indicate the five directions. When two flags were crossed, it signaled for the platoons to combine into a larger formation.[11]

The Tang army also made use of scouts on campaign. A pair of scouts were sent out for each of the four directions at different distances. Two at five li, another two at ten li, and so on until they reached 30 li.[11]

Military examinationEdit

In 702, Wu Zetian introduced military examinations for the recruitment of military officers. Examinees were tested on their skill with the bow and arrow, cavalry lance, as well as physical strength and command "presence". The imperial military exams had very little effect on the composition of the officer corps. While local military exams were administered, the final decision came down to the military governors, whose personnel appointments were routinely approved by the court. For example, at the beginning of 755, An Lushan replaced 32 Han Chinese commanders with his own barbarian favorites without any repercussions.[9]

EquipmentEdit

Sui (581–618)Edit

The Sui dynasty made prodigious use of heavy cavalry and both men and horses were often heavily armoured.[12]

The Book of Sui provides an account of the "first cavalry battalions" of the dynasty's Twenty-four armies. They wore "bright-brilliant" (mingguang) armour made of decarburized steel connected by dark green cords, their horses wore iron armour with dark green tassels, and they were distinguished by lion banners. Other battalions were also distinguished by their own colors, patterns, and flags, but neither the bright-brilliant armour or iron armour are mentioned.[13][14]

Tang dynasty (618–907)Edit

 
Tang soldier in cord and plaque armour

CavalryEdit

By the Tang dynasty it was possible for armour to provide immense personal protection. In one instance Li Shimin's cousin, Li Daoxuan, was able to cut his way through the entire enemy mass of Xia soldiers and then cut his way back again, repeating the operation several times before the battle was won, at which point he had so many arrows sticking out of his armour that he looked like a "porcupine."[15] The effective range of a composite bow against armoured troops in this era was considered to be around 75 to 100 yards.[16]

Li Shimin's elite cavalry forces were known to have worn distinctive black "iron clad" armour,[17] but heavy cavalry declined as Turkic influence became more prevalent and light cavalry became the dominant mode of mounted warfare. Tang expeditionary forces to Central Asia preferred a mixture of light and heavy Chinese horse archers. After the An Lushan rebellion of the mid 9th century and losing the northwestern pastures to the Tibetans, Chinese cavalry almost disappeared altogether as a relevant military force.[18] Many southern horses were considered too small or frail to carry an armoured soldier.[19]

Infantry armourEdit

Infantry armour became more common in the Tang era and roughly 60 percent of active soldiers were equipped with armour of some kind.[10] Armour could be manufactured natively or captured as a result of war. For instance 10,000 suits of iron armour were captured during the Goguryeo–Tang War.[20] In the early Tang period when the fubing system was still active, soldiers were supposed to supply themselves with clothing and weapons at the outset of a campaign.[4] However, after the fubing system was replaced with permanent soldiers known as jian'er in the late 7th century, the Tang government began supplying them themselves. Armour and mounts, including pack animals, were supplied by the state through state funds, and thus considered state property. Private ownership of military equipment such as horse armour, long lances, and crossbows was prohibited. Possession was taken as intent of rebellion or treason.[21] The army staff kept track of armour and weapons with detailed records of items issued. If a deficiency was discovered, the corresponding soldier was ordered to pay restitution.[22] The state also provided clothing and rations for border garrisons and expeditionary armies. Soldiers not on active duty were expected to pay for themselves, although "professional" soldiers were given tax exemptions.[23] Officers, however, were permanently employed.[2]

Dao (saber)Edit

 
Sui dynasty swords.

The dao, a single edged blade (saber), was separated into four categories during the Tang dynasty. These were the Ceremonial Dao, Defense Dao, Cross Dao, and Divided Dao. The Ceremonial Dao was a court item usually decorated with gold and silver. It was also known as the "Imperial Sword". The Defense Dao does not have any specifications but its name is self-explanatory. The Cross Dao was a waist weapon worn on the belt, hence its older name, the Belt Dao. It was often carried as a sidearm by crossbowmen.[24] The Divided Dao, also called a Long Dao (long saber), was a cross between a polearm and a saber. It consisted of a 91 cm blade fixed to a long 120 cm handle ending in an iron butt point, although exceptionally large weapons reaching 3 meters in length and weighing 10.2 kg have been mentioned.[25] Divided daos were wielded by elite Tang vanguard forces and used to spearhead attacks.[26]

In one army, there are 12,500 officers and men. Ten thousand men in eight sections bearing Belt Daos; Two thousand five hundred men in two sections with Divided Daos.[26]

— Taibai Yinjing

CrossbowEdit

 
Illustration of a rectangular Tang volley fire formation using crossbows. From Li Quan 李筌, Shen ji zhi di tai bai yin jing 神機制敵太白陰經, ca. 759.

After the Han dynasty, the crossbow lost favor until it experienced a mild resurgence during the Tang dynasty, under which the ideal expeditionary army of 20,000 included 2,200 archers and 2,000 crossbowmen.[10] Li Jing and Li Quan prescribed 20 percent of the infantry to be armed with standard crossbows, which could hit the target half the time at a distance of 345 meters, but had an effective range of 225 meters.[27] Spearmen were all supposed to carry a bow and crossbowmen and armed with halberds for self-defense, but it's not clear how well this worked in practice.[28]

During the An Lushan Rebellion the Tang general Li Guangbi successfully deployed a spear crossbow formation against the rebel cavalry forces under Shi Siming. In 756 Shi Siming raced ahead of the main army with his mounted troops to intercept Li Guangbi's Shuofang army near the town of Changshan. Li took Changshan in advance and set up his men with their backs to the town walls to prevent a sneak attack. The spearmen formed a dense defensive formation while 1,000 crossbowmen divided into four sections to provide continuous volley fire. When Shi's cavalry engaged Li's Shuofang army they were completely unable to close in on his troops and suffered heavy losses, forcing a withdrawal.[29]

The concept of continuous and concerted rotating fire, the countermarch, may have been implemented using crossbows as early as the Han dynasty[30], but it was not until the Tang dynasty that illustrations of the countermarch appeared.[31] The 759 CE text, Tai bai yin jing (太白陰經) by Tang military official Li Quan (李筌), contains the oldest known depiction and description of the volley fire technique. The illustration shows a rectangular crossbow formation with each circle representing one man. In the front is a line labeled "shooting crossbows" (發弩) and behind that line are rows of crossbowmen, two facing right and two facing left, and they are labeled "loading crossbows" (張弩). The commander (大將軍) is situated in the middle of the formation and to his right and left are vertical rows of drummers (鼓) who coordinate the firing and reloading procedure in procession: who loaded their weapons, stepped forward to the outer ranks, shot, and then retired to reload.[32] According to Li Quan, "the classics say that the crossbow is fury. It is said that its noise is so powerful that it sounds like fury, and that's why they named it this way,"[33] and by using the volley fire method there is no end to the sound and fury, and the enemy is unable to approach.[33] Here he is referring to the word for "crossbow" nu which is also a homophone for the word for fury, nu.[31]

The encyclopedic text known as the Tongdian by Du You from 801 CE also provides a description of the volley fire technique: "[Crossbow units] should be divided into teams that can concentrate their arrow shooting.… Those in the center of the formations should load [their bows] while those on the outside of the formations should shoot. They take turns, revolving and returning, so that once they've loaded they exit [i.e., proceed to the outer ranks] and once they've shot they enter [i.e., go within the formations]. In this way, the sound of the crossbow will not cease and the enemy will not harm us."[31]

Large mounted crossbows known as "bed crossbows" were used as early as the Warring States period. Mozi described them as defensive weapons placed on top the battlements. The Mohist siege crossbow was described as humongous device with frameworks taller than a man and shooting arrows with cords attached so that they could be pulled back. By the Han dynasty, crossbows were used as mobile field artillery and known as "Military Strong Carts".[34] Around the 5th century AD, multiple bows were combined together to increase draw weight and length, thus creating the double and triple bow crossbows. Tang versions of this weapon are stated to have obtained a range of 1,160 yards, which is supported by Ata-Malik Juvayni on the use of similar weapons by the Mongols in 1256.[35] According Juvayni, Hulagu Khan brought with him 3,000 giant crossbows from China, for the siege of Nishapur, and a team of Chinese technicians to work a great 'ox bow' shooting large bolts a distance of 2,500 paces, which was used at the siege of Maymun Diz.[36] Constructing these weapons, especially the casting of the large triggers, and their operation required the highest order of technical expertise available at the time. They were primarily used from the 8th to 11th centuries.[37]

Mail armourEdit

 
Close up view of mail armour on a Tang painting

Mail was already known to the Chinese since they first encountered it in 384 AD when their allies in the nation of Kuchi arrived wearing "armor similar to chains". However they did not procure a suit of mail until 718 AD when Central Asians presented to the Tang emperor a coat of "link armour". Mail was never used in any significant numbers (typically belonging to high ranks and those who could afford it) and the dominant form of armour continued to be lamellar.[38]

Mountain pattern armourEdit

References to mountain pattern armour (Chinese: 山文铠; pinyin: shānwénkǎi) appear as early as the Tang dynasty, but historical texts provide no explanation or diagram of how it actually worked. There are also no surviving examples of it. Everything that is known about mountain pattern armour comes from paintings and statues, typically of the Song and Ming periods. It is not unique to China and has been found in depictions in Korea, Vietnam, Japan, and even Thailand, however non-religious depictions are limited to only China, Korea, and Vietnam. Reconstruction projects of this type of armour have largely failed to produce good results.[39]

The current theory is that this type of armour is made from a multitude of small pieces of iron or steel shaped like the Chinese character for the word "mountain" (山). The pieces are interlocked and riveted to a cloth or leather backing. It covers the torso, shoulders and thighs while remaining comfortable and flexible enough to allow movement. Also during this time, senior Chinese officers used mirror armour (Chinese: 护心镜; pinyin: hùxīnjìng) to protect important body parts, while cloth, leather, lamellar, and/or Mountain pattern armor were used for other body parts. This overall design was called "shining armor" (Chinese: 明光甲; pinyin: míngguāngjiǎ).[40]

Sui campaigns and battlesEdit

Emperor Wen of Sui (581–604)Edit

 
Sui conquest of Chen, 588-589

On 4 March 581, Yang Jian deposed Yuwen Chan, and declared himself Emperor of the Sui dynasty.[41]

1st Göktürks (582–585)Edit

In 582, Ishbara Qaghan raided the Wei River valley and made off with large amounts of livestock.[42]

In 585, Ishbara Qaghan was defeated by Sui forces at the Baidao Pass, near modern Hohhot. In the summer the Türks returned and killed the Sui commander in Youzhou.[42]

Western Liang (587)Edit

In 587, the Sui dynasty annexed Western Liang and began preparations for an invasion of the Chen dynasty.[41]

Chen dynasty (588–589)Edit

War vessels were built in Donghai Commandery, Qichun, and Yong'an. The largest ships were the Five-Banner ships that had five decks and were capable of accommodating 800 men. They were armed with six 50-foot-long, spike-bearing booms, that could be dropped vertically onto enemy vessels to pin them down for missile fire. The second largest class were known as Yellow Dragons and could carry 100 men each. Other smaller crafts also existed.[43]

By the late fall of 588, the Sui dynasty had marshaled three fleets and five armies along the Changjiang, in total some 518,000 men. The Chen dynasty had perhaps 100,000 men. In the winter, Yang Su led his fleet downstream from Yong'an. They encountered at Wolf Tail's rapids a Chen fleet of 100 Green Dragon ships with support from several thousand men in palisade forts on north and south banks. Yang Su waited until night time before launching a three pronged attack on the Chen position. He himself took a large portion of the fleet past the palisades while two land columns attacked the palisades. The attack was a success and all the Chen troops were taken prisoner. Further downstream at Qiting, the Chen general Lü Zhongsu had stretched three iron chains across the river. The initial Sui offensives were met with failure and suffered some 5,000 casualties. Finally a night attack succeeded in overcoming the Chen defenses and the chains were removed. Lü Zhongsu fled with his fleet to Yan Island beneath Mount Jingmen, but the Sui sent four Five-Banner ships and chased them down. Using the spiked booms, the Sui ships were able to destroy a dozen Chen vessels, leading to the surrender of the Chen fleet.[44]

Chen commander Chen Huiji tried to bring 30,000 men down the Changjiang but was blocked by Yang Jun at the confluence of the Han River.[44]

On 22 January 589, Sui commander Heruo Bi crossed the Changjiang from Guangling with 8,000 men. The move came as a complete surprise to Chen forces on the southern bank due to a series of deceptions by Heruo Bi involving pretending to rotate soldiers and conducting practice hunts. The Chen forces could not stop the crossing since the majority of their fleet was concentrated at Jiankang. Heruo took Jingkou on 27 January. Meanwhile a crack force of 500 men under Han Qinhu slipped across the Changjiang upstream of Jiankang and captured Caishi. They were then reinforced with 20,000 men. On 10 February 589, a Chen army met with Heruo's forces east of Jiankang, but of the five contingents, only one under Lu Guangda was willing to attack Heruo. Heruo was pushed back and his army suffered 273 casualties. Seeing that the situation was turning against him, Heruo set fire to the grass and escaped under cover of smoke. He then attacked another Chen division and routed it. The defeat reverberated throughout the entire Chen army, causing a general rout. While the battle was taking place, Han Qinhu approached Jiankang, which surrendered without a fight. General Yang Guang had the Chen ruler write letters of submission for his generals to follow, which most of them did. Wang Shiji's fleet moved south from Qichun to receive their surrender.[45]

The only commander to offer any significant resistance was the governor of Wu Commandery. He was defeated by a two pronged attack from overland by Yang Guang and oversea by Yan Rong.[45]

In late 590, a large rebellion occurred at Lake Tai in response to rumors that the Sui government was planning on relocating hundreds of thousands of northerners to the north. The rebellion spread south all the way to present-day Vietnam. However the rebel forces suffered several defeats to Yang Su and his commander Shi Wansui. The rebellion was eventually ended when Yang Su persuaded one of the two primary rebel leaders to turn on his colleague and hand him over to the Sui in return for his own life.[46]

DemobilizationEdit

On 16 June, 590, it was decreed that the Twenty-four Armies would be demobilized and registered under the Equal-field system.[47]

On 12 April 595, it was decreed that all weapons in the empire and any southern boat longer than 30 feet would be confiscated.[47]

Cuanman (593–602)Edit

In 593, the Cuanman rebelled in Yunnan. A punitive expedition was launched in 597 and the Cuanman were defeated in 602.[48]

1st Goguryeo (598)Edit

 
Tributary envoys from Baekje, Goguryeo, and Silla. Painting produced 7th century AD by Yan Liben (c. 600–673).
 
1st Goguryeo-Sui War, 598

In early 598, Goguryeo and the Mohe people raided Sui territory. The Sui retaliated with a 300,000 strong army on 4 August. Due to torrential rains, food shortage, and sickness, the army withdrew in October. A waterborne invasion from Shandong encountered storms and lost many of its vessels.[49]

2nd Göktürks (599)Edit

In 599, Tardu attacked the Sui dynasty but was defeated by Yang Su.[50]

Early Lý dynasty (602)Edit

In 602, Sui forces under Liu Fang annexed the Early Lý dynasty.[49]

Emperor Yang of Sui (604–618)Edit

Champa (605)Edit

In 605, Sui forces under Liu Fang invaded Champa. The Champan army fielded elephants against the Sui army. Liu Fang had his soldiers dig pits and cover them with grass. When the elephants blundered into them while chasing a feigned flight, the Sui forces turned around and shot the elephants with crossbows. The elephants stampeded into the Champans and routed their own army. Liu Fang went on to sack the Champan capital but died from disease on the way back.[49]

Tuyuhun (608)Edit

In 608, Sui forces defeat the Tuyuhun, a people of mixe Xianbei and Qiang descent in modern Qinghai Province.[51]

2nd Goguryeo (612)Edit

 
2nd Goguryeo-Sui War, 612

Emperor Yang of Sui began preparations for a campaign against Goguryeo in 610 when he imposed a new tax on wealthy families to purchase horses for his army. He officially announced the expedition on 14 April 611. Three hundred seagoing vessels were constructed in Donglai and 10,000 marines were transferred from the southern river systems to crew them. In addition to the regular forces, 30,000 javelin-men were recruited from Lingnan and 30,000 crossbowmen as well. On 1 June, the emperor arrived in Zhuo Commandery, south of modern Beijing. Connecting this location to the Huai River was the Yongji canal, which allowed the buildup of military materiel. Craftsmen in were ordered to construct 50,000 carts to transport clothing, armour, and tents. Some 600,000 men were mobilized to move wheelbarrows of grain northeast of Zhuo Commandery. According to the History of Sui, the combined 30 armies gathered for the expedition numbered 1,133,800 combat troops, and another two million serving in logistical capacity. David Graff gives a reduced estimate of 600,000 for the land forces and another 70,000 for the fleet.[52]

On 8 February 612, the vanguard began their march for Goguryeo. They reached the Liao River on 19 April. The Sui army made two attempts to cross the river before succeeding and defeated the Goguryeo army arrayed before them. Emperor Yang besieged Ryotongseong (near modern Liaoyang). Meanwhile the Sui fleet under Lai Huer set sail from Donglai and entered the Taedong River, arriving near Pyeongyang by the middle of July. They defeated a Goguryeo force laid siege to Pyeongyang with 40,000 men. The defenders feigned flight, luring the invaders past the outer walls into an ambush, and drove them back to their ships with heavy losses. Lai remained on the coast for the rest of the campaign.[53]

The fortress of Ryotongseong had not fallen and the siege was taking too long, so Emperor Yang sent nine of the thirty armies ahead with 100 days' supply of grain. However by the time they had reached the Yalu River, most of the provisions had been spent. Some of the soldiers stored the grain underground because they could not bare the burden. One of the army commanders, Yuwen Shu, suggested that they retreat, but Yu Zhongsheng, who was in overall command refused. Eventually they were forced to retreat due to lack of provisions, but as the nine armies were crossing the Sa River, a strong attack by Goguryeo inflicted immense casualties on the units remaining on the southern bank.[54]

On 27 August, Emperor Yang received news of the defeat and called off the campaign.[54]

3rd Goguryeo (613)Edit

On 28 January 613, Emperor Yang of Sui ordered a new army to be gathered at Zhuo Commandery. The new army crossed the Liao River on 21 May and laid siege to Ryotonseong while another column attacked Sinseong (near modern Fushun). Yuwen Shu and Yang Yichen attacked Pyeongyang. On 20 July, news of a rebellion by Yang Xuanguan at Liyang reached Emperor Yang, forcing him to withdraw.[55]

Yang Xuanguan (613)Edit

On 25 June 613, Yang Xuangan rebelled in Liyang. He laid siege to Luoyang for several weeks before giving up and fleeing further west where he was killed by Sui forces.[56]

4th Goguryeo (614)Edit

On 4 April 614, Emperor Yang of Sui ordered a new campaign against Goguryeo. The new army arrived on the Liao River on 27 August but failed to make any headway against the border fortresses. Lai Huer crossed the Bohai Sea and defeated a Goguryeo army. Yeongyang of Goguryeo sued for peace and Emperor Yang declared victory, withdrawing across the Liao.[56]

3rd Göktürks (615)Edit

In the summer of 615, Emperor Yang of Sui was surrounded at Yanmen Commandery by Shibi Khan, but managed to escape after machinations at the Göktürk court caused them to retreat.[57]

Transition from Sui to TangEdit

After failing to defeat Goguryeo several times over, the Sui dynasty erupted into war among several competing factions. By the summer of 618, there emerged nine major contenders for power:

Battle of Yanshi (618)Edit

Li Mi advanced on Wang Shichong in Luoyang in 618. On 4 October, Wang Shichong sortied out with 20,000 of his elite troops and bypassed Li Mi's forward positions. He advanced deep into enemy territory and engaged with Li's 40,000 strong army the next day. Wang sent several hundred cavalry across the canal to skirmish with Li's general Shan Xiongxin while he built bridges to cross the canal. The two sides disengaged when night set in, but Wang deployed his forces in the darkness and set up offensive formations near the enemy camp. When Li's camp became aware this, they tried to set up defensive positions, but it was already too late. Wang's army struck them before they had finished deploying while horsemen set fire to their tents. Li escaped with 10,000 men and fled to Li Yuan in the west. His forces were either killed or surrendered to Wang Shichong.[62]

Battle of Qianshuiyuan (618)Edit

On 6 August 618, Xue Ju inflicted a serious defeat on Tang forces at the first battle of Qianshuiyuan, forcing them back to Chang'an. The Tang general, Li Shimin, returned in September, at which point Xue Ju had already died. His son Xue Rengao was now in command. From the fortified camp near Gaozhe, Li sent small units to skirmish with the enemy but refused to commit his whole army to battle. After some sixty days, Xue's army ran out of supplies and his generals started defecting to the Tang side. At this point, Li sent out two detachments in succession to lure out the enemy army. While the Xue army was engaged with the vanguard detachments, Li attacked with the rest of the army from another direction. The result was complete victory and Xue Rengao's surrender on 30 November.[63]

Du Fuwei (619)Edit

Du Fuwei surrendered to the Tang in 619.[64][65]

Battle of Jiexiu (619–620)Edit

Liu Wuzhou and his general Song Jin'gang attacked Taiyuan and the Fen River valley in late autumn of 619. Li Shimin countered them by building a strong fortified camp at Bobi. Li avoided any major confrontations, and like the previous battle at Qianshuiyuan, he sent out small units to skirmish with the enemy. After a confrontation lasting several months, the Liu army under Song ran out of supplies. In the middle of May 620, Li gave chase and demolished the opposing force in a piecemeal fashion, taking them apart from 21 May to 1 June. In the final battle, Li sent to pin the left and right flanks before driving his elite cavalry into the center line for a decisive blow. Liu Wuzhou fled to the Türks.[63]

Battle of Hulao (621)Edit

Li Shimin began his advance on Wang Shichong's Luoyang in August 620 with 50,000 men. By the end of the month he had fortified the hills approaching Luoyang and territories to its north and south. He also occupied the strategic pass of Huanyuan, triggering a number of defections from Henan to the Tang side, reducing Wang's territory to just Luoyang, Xiangyang, and Xuzhou. Li defeated Wang's army several times outside the walls of Luoyang and enacted a blockade on the city. By the spring of 621, the inhabitants of Luoyang had been reduced to starvation and cannibalism. Wang tried to make a break for it on 11 March, but failed and lost several thousand men.[66]

Meanwhile, Dou Jiande saw an opportunity to defeat both the Tang army and eliminate Wang Shichong at the same time. In April 621, Dou marched for Luoyang with 100,000 soldiers. Li Shimin broke off from the main army with a light column to block Dou's advance at Hulao Pass. Li occupied the towns and hills above the pass and refused to engage with the enemy army. In late May, Li sent cavalry forces to raid Dou's supply line. Dou responded with an attack on Hulao Pass on 28 May. He deployed his army in front of the Yellow River facing the enemy position and the two sides sent cavalry to skirmish in the early morning. Dou's army wavered at the sight of a strong cavalry offensive and attempted to withdraw to a more defensible position. Seeing weakness in the enemy lines, Li personally charged in with a detachment of light cavalry and cut off their retreat. The main body of the Tang army followed up and collapsed on the opposing force. Dou was injured by a lance and captured. Wang Shichong surrendered on 3 June.[67]

Battle of Jiangling (621)Edit

Beginning in 620, Li Xiaogong made preparations for an invasion of Xiao Xian's territory. Together with Li Jing, Li Xiaogong launched a river campaign in the autumn of 621. They defeated the Xiao fleet at the mouth of the Qing River and proceeded to defeat the Xiao army outside the walls of Jiangling. Xiao Xian capitulated on 10 November.[68]

Rebellions (621–624)Edit

When Dou Jiande was executed in June 621, his former generals elected Liu Heita as their leader and rebelled. Xu Yuanlang, a Shandong bandit chief also joined them in rebellion. They were both defeated by spring of 623. Du Fuwei's lieutenant Fu Gongshi also rebelled. He was crushed in the spring of 624.[69]

GöktürksEdit

 
Göktürk cavalry

1st Eastern Turkic Khaganate (623–626)Edit

From 623 to 626, Illig Qaghan carried out raids across the northern Tang frontier. In 624, Illig and his nephew Ashina Shibobi planned on a major invasion of the Tang, but Li Shimin convinced Shibobi not to invade, so the campaign ground to a halt. In 626, only a few weeks after Emperor Taizong of Tang took power, the Türks approached the northern bank of the Wei River, near Chang'an. On 23 September, Taizong agreed to a payment of tribute to the Eastern Turkic Khaganate.[70]

Liang Shidu (628)Edit

In 628, Liang Shidu was killed by his cousin who surrendered to the Tang.[71]

2nd Eastern Turkic Khaganate (629–630)Edit

Preparations for a campaign against the Eastern Turkic Khaganate were completed by the autumn of 629. Emperor Taizong of Tang contacted the Xueyantuo north of the Gobi Desert and made an alliance with them.[72]

On 11 September, Li Jing was appointed commander-in-chief of the expeditionary army. On 13 December, he commenced the offensive operation.[72]

Six Tang armies marched against the Eastern Turks. Li Jing marched north from Mayi toward Dingxiang, where Illig Qaghan was encamped. Li Jing occupied the ridge south of Dingxiang with 3,000 light cavalry. At night, the Tang forces attacked Dingxiang and penetrated the outer wall, forcing Illig to flee north to a place called Iron Mountain. Meanwhile, Li Shiji's forces joined Li Jing at Baidao Pass.[72]

Illig tried to sue for peace. As negotiations were underway, Li Jing and Li Shiji made a surprise attack on Illig's camp on 27 March 630. The Türks were caught unaware and a one sided massacre ensued where some 10,000 Türks were killed. Illig was able to escape but was later caught and handed over to Tang officers on 12 May 630. The surrendered Türks were settled on the marginal borderlands of the Tang between them and the Xueyantuo. A hundred or so Türks were made generals of the Tang army.[73]

1st Xueyantuo (641)Edit

In 641, Li Shiji inflicted a major defeat on the Xueyantuo at Nuozhen River.[74]

2nd Xueyantuo (645–646)Edit

In 646, the Xueyantuo were defeated and submitted to the Tang.[74][75]

1st Western Turkic Khaganate (651–652)Edit

In the winter of 651, the Tang sent 30,000 soldiers and 50,000 Uyghur cavalrymen against the Western Turkic Khaganate. In 652, they were intercepted by the Chuyue, who were vassals of the Western Turks, and defeated them. The Tang army established prefectures in present day Fukang and Miquan before returning home due to a shortage of provisions.[76]

2nd Western Turkic Khaganate (656–657)Edit

In the winter of 656, the Tang army set off to defeat the Western Turkic Khaganate. In the fall of 657, they defeated the Chuyue and Karluks subordinate to the Western Turks at Yumugu (nearly present day Urumqi). After securing a victory against the Western Turks at Yingsuo River, the two commanders in charge of the Tang forces got into an argument over their next course of action. They eventually agreed on organizing their troops into a tight formation for better protection, but the delay made it impossible for them to find and engage Ashina Helu's main forces, and the expedition ended inconclusively.[76]

3rd Western Turkic Khaganate (657)Edit

Another expedition was dispatched under the leadership of Su Dingfang, Ashina Mishe, and Ashina Buzhen. The Tang generals convinced Axijie, leader of the strongest tribe under Ashina Helu's command, to defect by releasing his tribesmen captured in previous campaigns. Su Dingfang defeated the Chuyue and convinced the Turgesh to surrender. He engaged Ashina Helu's main army at the Battle of Irtysh River. Ashina Helu encircled Su's army and attacked the infantry first, but the Tang soldiers stood their ground and used their long spears to force back the enemy cavalry. Su then counterattacked, killing tens of thousands of Türks. Ashina Helu fled and the Tang army chased after him. After meeting up with the southern army, the combined Tang army made a final attack on Ashina Helu's camp, but he managed to escape again. Ashina Helu's retinue reached Shiguo before being captured by the locals who handed them over to the Tang. Ashina Helu was brought back to Chang'an in 658, where he was pardoned, but died soon after anyways.[74]

Ashina Duzhi (677–679)Edit

In 677, Ashina Duzhi rebelled and allied himself to the Tibetan Empire. In 679, Pei Xingjian attacked Ashina Duzhi at Suiye (Tokmak) and defeated him. Suiye was turned into a Tang garrison[77]

Ashina Nishufu (679–680)Edit

In 679, Ashina Nishufu rebelled on the northern border of Hedong (Shanxi). They were defeated by Pei Xingjian in 680.[78]

Ashina Funian (680)Edit

In 680, Ashina Funian rebelled, but he eventually surrendered and was executed in Chang'an.[79]

1st Second Turkic Khaganate (681–687)Edit

In 681, Ilterish Qaghan rebelled with the remnants of Ashina Funian's followers and declared the Second Turkic Khaganate in 682. [80] The Second Turks conducted annual raids on Tang territory until 687.[81]

2nd Second Turkic Khaganate (693–702)Edit

The Second Turkic Khaganate conducted regular raids from 693 to 702 under Qapaghan Qaghan until Wu Zetian accepted his marriage proposal in 703.[82]

3rd Second Turkic Khaganate (706–707)Edit

The Second Turkic Khaganate conducted raids in 706 and 707.[83][82]

4th Second Turkic Khaganate (720)Edit

In 720, Bilge Khagan of the Second Turkic Khaganate invaded and extracted tribute. A Tang, Basmyl, Khitan counterattack was defeated.[82][80]

TurgeshEdit

1st Turgesh (703)Edit

In 703, the Turgesh seized Suiye.[84]

2nd Turgesh (708–709)Edit

In 708, the Turgesh attacked Qiuci and in 709, defeated a Tang army.[85][86]

3rd Turgesh (717)Edit

On 15 August 717, a Turgesh led army of Tibetans and Arabs laid siege to Uch Turfan and Gumo. General Tang Jiahui defeated them. The Arab general Al-Yashkuri fled to Tashkent.[87]

4th Turgesh (726–727)Edit

From 726 to 727, the Turgesh and Tibetan Empire attacked Qiuci.[84]

5th Turgesh (735–737)Edit

In 735, the Turgesh attacked Tingzhou.[88] The Tang counterattack defeated them in 737.[89]

6th Turgesh (740–744)Edit

In 740, Kül-chor of the Turgesh submitted to the Tang dynasty but later rebelled anyways and was killed in 744.[84][90]

7th Turgesh (748)Edit

In 748, the Tang recaptured Suiye and destroyed it.[84]

8th Turgesh (750)Edit

In 750,[84] the Turgesh rebelled along with Chach in modern Tashkent. They were defeated.[91]

UyghursEdit

1st Uyghurs (843)Edit

In 843, Shi Xiong attacked the Uyghurs displaced by the fall of their khaganate and slaughteed 10,000 Uyghurs at "Kill the Foreigners" Mountain (Shahu).[92]

KoreaEdit

 
Tang-Korean wars
 
Silla-Tang War, 672-676

1st Goguryeo (645)Edit

Preparations for a campaign against Goguryeo began in 644. A fleet of 500 ships was constructed to transport 43,000 soldiers across the sea. On land, some 60,000 soldiers gathered at Youzhou under the command of Li Shiji.[93]

Li Shiji's army set off from Yincheng (modern Chaoyang) in April 645. He laid siege to Gaemo on 16 May and captured it on 27 May. He then headed southwest and defeated a Goguryeo army of 40,000. Li Shiji was joined by the emperor with 10,000 heavy cavalry. They took Ryotong on 16 June and Baekam on 27 June. When they reached Ansi City on 18 July, news reached them that a large Goguryeo-Mohe army was on its way. Taizong ordered Li Shiji to bait out the enemies with only 15,000 men while he himself ambushed them from the rear. The remaining enemies fled atop a hill where they were surrounded and forced to surrender, yielding 36,800 captives, 50,000 horses, 50,000 cattle, and 10,000 suits of iron armour. All the Mohe soldiers were put to death while the rest were freed.[20]

Despite the initial success, the Tang expedition ground to a halt at Ansi, which refused to fall. The naval force took Bisa but failed to meet up with the land army or capture Pyeongyang. After the defenders at Ansi made a successful sortie to secure a strategic location in the southeastern corner of the city, Taizong called an end to the expedition and ordered a withdrawal on 13 October.[94]

2nd Goguryeo (647)Edit

In 647, Emperor Taizong of Tang sent a naval force to harass the coast of Goguryeo while Li Shiji led 10,000 horsemen to raid across the Liao River frontier.[94]

Baekje (660–663)Edit

In the fall of 660, Su Dingfang led a naval invasion of Baekje. The Tang army defeated the army of Baekje at the mouth of the Geum River. They then sailed up the river and captured Baekje's capital, Sabi, conquering the kingdom. The natives rebelled soon after and besieged Liu Renyuan in the capital until Liu Rengui could bring in reinforcements. A stalemate ensued with Baekje holding some cities while Silla and the Tang occupied others. Baekje called the Yamato for help. In the autumn of 663, a combined Tang-Silla army marched for Churyu, the capital of the rebels. Meanwhile the Tang fleet encountered and destroyed the Yamato fleet at the Battle of Baekgang at the mouth of the Geum River. Churyu was captured on 14 October and the rebellion was vanquished.[95]

3rd Goguryeo (661–662)Edit

In the summer of 661, Su Dingfang led an army of 44,000 across the sea and laid siege to Pyeongyang while another Tang army under Qibi Heli advanced overland. Qibi Heli defeated a Goguryeo army at the Yalu River but Su Dingfang failed to take Pyeongyang. The invasion was called off in the spring of 662 when a subsidiary Tang force was defeated.[95]

4th Goguryeo (667–668)Edit

In early 667, a Tang invasion of Goguryeo was launched with Li Shiji at its head. The Tang army easily swept away the border fortifications and pressed into Goguryeo's heartland in the spring of 668. Pyeongyang fell on 22 October and the Tang annexed Goguryeo.[96]

Silla (672–676)Edit

In 672, Silla attacked Tang positions in Korea. By 674, they had taken all the territory of what was previously Baekje. In 675, Liu Rengui attacked Silla and defeated them in Gyeonggi. In response Munmu of Silla dispatched a tributary mission to Tang with apologies. Emperor Gaozong of Tang accepted Munmu's apologies and withdrew Tang troops to deal with the Tibetan threat in the west. Seeing the Tang's strategic weakness, Silla renewed the advance on Tang territory, taking all of Korea by 676.[97][98]

Lesser Goguryeo (699)Edit

In 699, Go Deokmu rebelled and created Lesser Goguryeo; the Protectorate General to Pacify the East was moved to Pingzhou, in modern Lulong County.[99][100]

TibetEdit

1st Tuyuhun (623)Edit

 
Tang-Tuyuhun War, 634–635

In 623, the Tuyuhun, a people of mixed Xianbei and Qiang stock residing in modern Qinghai Province, invaded the northwest but were defeated by Chai Shao.[101]

2nd Tuyuhun (634–635)Edit

In 634, Li Jing and Hou Junji embarked on a campaign against the Tuyuhun. They traveled for five months before catching up with the Tuyuhun northeast of Qinghai Lake and defeated them in 635. Murong Shun surrendered to the Tang but failed to keep power in his territory and was killed. Tuyuhun was thereafter ruled by Murong Nuohebo until it was conquered by the Tibetan Empire in 663.[74][102][103]

1st Tibetan Empire (639)Edit

 
The Imperial Sedan Chair: Emperor Taizong depicted giving an audience to Gar Tongtsen Yulsung, the ambassador of the Tibetan Empire, in a painting by court artist Yan Liben (600-673 AD)

In 639, Songtsen Gampo of the Tibetan Empire personally led an army against Songzhou (Songpan). The neighboring prefectures of Kuazhou and Nuozhou defected to the Tibetan side. Songzhou's governor attacked the Tibetans but lost. The Tang court dispatched 50,000 soldiers under Hou Junji to relieve Songzhou. Hou attacked Songtsen Gampo's camp at night, killing some 1,000 Tibetan soldiers. Songtsen Gampo called off the campaign and sent an envoy to Songzhou to apologize. However he insisted to a marriage alliance, to which Emperor Taizong of Tang agreed to in 640.[104]

2nd Tibetan Empire (659–665)Edit

In 659, the Tibetan Empire sent 80,000 soldiers to attack Heyuan River in modern Qinghai Province. They were defeated by only 1,000 troops under Su Dingfang. The Tibetans returned the next year and attacked Shule, then Khotan in 663 and 665. They were repelled.[105]

3rd Tibetan Empire (667–674)Edit

In 667, the Tibetan Empire launched an attack on the Anxi Protectorate, taking 18 prefectures. In the spring of 670, Emperor Gaozong of Tang dispatched two expeditionary forces, one to Qinghai, the other to the Western Regions. The Qinghai expedition under Xue Rengui split into two columns. The column under Guo Daifeng was intercepted by a Tibetan force of 20,000 and forced back to abandon their supplies to flee to Dafei River on a plain southwest of Qinghai Lake. Xue Rengui hurried back to join Guo Daifeng but they were defeated anyways. The Tibetans annexed the former territory of the Tuyuhun, conquered Qiuci, sacked Shule and attacked Gumo.[106][79][107]

The Tang force to the Western Regions retook Shule in the middle of 673 and reverted the Kingdom of Khotan and Qiuci to Tang suzerainty.[108]

4th Tibetan Empire (676–681)Edit

In 676, the Tibetan Empire attacked Diezhou, Fuzhou, and Jingzhou. Fengtian and Wugong were sacked. In 677, the Tibetans captured Qiuci. In 678, they defeated a Tang army in the Qinghai region. Their advances were reversed in 679 when Pei Xingjian defeated them and re-established control over the Western Regions.[108][109][110] However the Tibetans returned the next year and captured the Anrong fortress in Sichuan.[107] A Tibetan invasion of Qinghai was defeated in 681.[111]

5th Tibetan Empire (690–696)Edit

After the Tang dynasty abandoned the Western Regions in 686 due to excessive military expenditures, the Tibetan Empire took control of the region. Wu Zetian later on decided to retake the region and sent two expeditions against the Tibetans. The first one in 690 was defeated at Issyk-Kul while the second one succeeded in 692. The Tibetans returned in 694 and attacked the Stone City (Charklik). In the spring of 696, the Tibetan Empire dealt a great defeat to a Tang army at Suluohan Mountain in Taozhou and attacked Liangzhou. However they were unable to follow up the victory due to court politics involving Tridu Songtsen and Gar Trinring Tsendro.[112]

6th Tibetan Empire (700–702)Edit

 
The Four Horns of the Tibetan Empire

In 700, Tridu Songtsen of the Tibetan Empire attacked Hezhou and Liangzhou. In 701, he allied with Türks and attacked Liangzhou, Songzhou, and Taozhou.[113][113] In 702, the Tibetan Empire attacked Maozhou.[114]

7th Tibetan Empire (710)Edit

In 710, Zhang Xuanbiao of the invaded northeastern Tibet.[115]

8th Tibetan Emire (714–717)Edit

In 714, the Tibetan Empire attacked Lintao, Weiyuan, Lanzhou and Weizhou, but ultimately suffered a major defeat.[116] In 715, the Tibetans attacked the Beiting Protectorate and Songzhou.[117] In 717, they allied with the Arabs and Turgesh to attack Gumo and the Stone City, but were defeated at the Battle of Aksu (717).[118] A Tibetan army was also defeated by Guo Zhiyun at the "Bends of the Yellow River".[119]

9th Tibetan Empire (720–724)Edit

In 720, the Tibetan Empire seized the Stone City.[120]

In 722, Tang assisted Lesser Bolü (小勃律, a city state centering modern Gilgit, Pakistan, in Kashmir) in repulsing advancing Tibetan troops.[121]

In 724, Wang Junchuo launched an attack on the Tibetan Empire and scores a victory.[120]

10th Tibetan Empire (726–729)Edit

In 726, Stag sgra khon lod of the Tibetan Empire attacked Ganzhou but most of their forces die in a snowstorm and the rest were mopped up by Wang Junchuo.[122]

In 727, Stag sgra khon lod and Cog ro Manporje along with the Turgesh attacked Qiuci[84] and Guazhou.[121][122] In 728, they attacked Qiuci again.[84]

In 729, Zhang Shougui (張守珪) inflicted a major defeat on the Tibetan Empire at Xining.[123][121]

11th Tibetan Empire (738–745)Edit

In 738, the Tang captured Anrong, but immediately lost it to the Tibetans.[124]

In 739, the Tang defeated a Tibetan army at Shan Prefecture.[124]

In 740, the Tang captured Anrong again.[9][125]

In 741, the Tibetans invaded the Qinghai region but were repelled. They sacked the Stone City on their way home.[126]

In 742, Huangfu Weiming of Longyou and Wang Chui of Hexi invaded northeastern Tibet and killed several thousand Tibetans.[127]

In 743, the Tang recovered the Jiuqu (九曲) area from the Tibetan Empire.[126]

In 745, the Tibetans defeated a Tang army at the Stone City.[126]

12th Tibetan Empire (749)Edit

In 749, Longyou defense command under Geshu Han retook the Stone City but suffered heavy casualties.[128][9]

13th Tibetan Empire (753)Edit

In 753, Geshu Han drove the Tibetans from the Jiuqu region on the upper course of the Yellow River.[9]

14th Tibetan Empire (757)Edit

In 757, the Tibetan Empire conquered Shanzhou (Haidong).[91]

15th Tibetan Empire (763–766)Edit

In November 763, a Tibetan army 100,000 strong advanced against the Tang capital of Chang'an. The Tibetans defeated a Tang force at Zhouzhi on 12 November. The next day, Emperor Daizong of Tang fled to Shanzhou. Chang'an was captured by the Tibetans on 18 November. They were however, unable to keep their position, as Guo Ziyi rallied Tang troops in Shangzhou and advanced on city from the southeast, while other Tang commander advanced from the north. The Tibetan army abandoned Chang'an on 30 November, taking with them large amounts of captives and plunder. Meanwhile the Tibetans also invaded the Protectorate General to Pacify the West and conquered Yanqi.[129][130]

In 764, the Tibetan Empire invaded again with a 70,000 strong army and conquered Liangzhou, but was ultimately repulsed by Yan Wu in Jiannan.[131]

In 765, the Tibetan Empire invaded with 30,000 troops and Uyghur allies, advancing as far as Fengtian twice but was repulsed by Guo Ziyi, who convinced the Uyghurs to switch sides.[128]

In 766, the Tibetans conquered Ganzhou and Suzhou.[131]

16th Tibetan Empire (776)Edit

In 776, the Tibetan Empire conquered Guazhou.[131]

17th Tibetan Empire (781)Edit

In 781, the Tibetan Empire conquered Yizhou.[129][131]

18th Tibetan Empire (786–793)Edit

In 786, the Tibetan Empire conquered Yanzhou and Xiazhou.[132] The Tang tried to make peace at the Treaty of Pingliang the next year, but the Tibetans double crossed them, and took their officials and officers as captives. After that they destroyed Yanzhou and Xiazhou before retreating.[133] In 787, the Tibetans captured Shazhou[134] and Qiuci.[129] In 788, the Tang defeated a Tibetan army at Xizhou.[135] In 789, the Tibetans attacked Longzhou, Jingzhou, and Bingzhou.[136] In 790, the Tibetans conquered Tingzhou.[129][137] In 792, the Tibetans conquered Xizhou and Yutian.[129][137] The Tang general Wei Gao stopped the Tibetan advance by defeating a 30,000 Tibetan strong army, recovering Yanzhou.[135]

19th Tibetan Empire (796)Edit

In 796, the Tibetans attacked Qingzhou but the campaign ended abruptly when chief minister Nanam Shang Gyaltsen Lhanang died.[135]

20th Tibetan Empire (801)Edit

In 801, the Tang and Nanzhao dealt a defeat to the Tibetans and Abbasid slave soldiers.[138]

21st Tibetan Empire (803)Edit

In 803, the Tang pushed the Tibetan Empire back to Pingliang.[139]

22nd Tibetan Empire (819)Edit

In 819, the Tibetan Empire attacked Qingzhou.[140]

23rd Tibetan Empire (821)Edit

In 821, a Tibetan invasion was driven off by the governor of Yanzhou.[141]

24th Tibetan Empire (847)Edit

In 847, a Tang army defeated the Tibetans at Yanzhou.[142]

25th Tibetan Empire (848–851)Edit

In 848, Zhang Yichao, a resident of Shazhou, rebelled against the Tibetan Empire and captured Shazhou and Guazhou. Zhang went on to capture Ganzhou, Suzhou, and Yizhou in 850,[143] and then submitted a petition to Emperor Xuānzong of Tang, offering his loyalty and submission.[144] In 851, Zhang captured Xizhou and the Tang emperor made him Guiyi Jiedushi (歸義節度使, Governor of the Guiyi Circuit) and Cao Yijin his secretary general.

In 849, Tibetan commanders and soldiers in eastern Gansu defected to the Tang.[142]

26th Tibetan Empire (861)Edit

In 861, Zhang Yichao retook Liangzhou,[144] extending the Guiyi Circuit's authority to Xizhou, Guazhou, Ganzhou, Suzhou, Yzhou, Lanzhou, Shanzhou, Hezhou, Minzhou, Liangzhou, and Kuozhou.

27th Tibetan Empire (866)Edit

In 866, Zhang Yichao defeated bLon Khrom brZhe and seized Tingzhou and Luntai but immediately lost them as well as Xizhou to the Kingdom of Qocho.[144]

Western RegionsEdit

Gaochang (638–640)Edit

In late 638, a Tang army under Hou Junji was sent against Gaochang. It arrived a year later and Karakhoja's king died of fright. His son surrendered. Gaochang was annexed on 19 September 640 and became Xizhou.[145]

1st Yanqi (644)Edit

In 644, Guo Xiaoke was sent against Yanqi, which had allied itself to the Western Turkic Khaganate. When the Tang army arrived, it defeated a Western Turk army and tributized Yanqi.[146]

2nd Yanqi (648)Edit

In 648, the Yanqi king was overthrown by a cousin, so another Tang army under Ashina She'er was sent in to place another member on the royal throne. The new king declared himself a Tang vassal.[146]

Kucha (648–649)Edit

In 648, Ashina She'er conquered Kucha and put under the control of Guo Xiaoke. Remnants of Kuchean forces retook the city soon after and killed Guo, but Ashina She'er returned and defeated them as well as taking five other cities. An additional 11,000 inhabitants were killed as reprisal for the death of Guo Xiaoke.[51][74]

Since the Kingdom of Khotan and the Shule Kingdom had already previously submitted to Tang authority in 632, with Shache following as well in 635, and Gumo (Aksu) in 644, the Tang dynasty now had complete control over the Western Regions.[51]

Khotan (725)Edit

In 725, the king of Khotan rebelled but was immediately replaced with a Tang puppet by the Anxi Protectorate.[120]

Little Balur (745)Edit

In 745, Gao Xianzhi marched across the Pamirs with 10,000 men and conquered Little Balur (Gilgit), a client state of the Tibetan Empire.[9]

Chach (750)Edit

In 750 the Tang intervened in a dispute between their vassal Fergana and the neighboring kingdom of Chach, located in modern Tashkent. The kingdom of Chach was sacked and their king was taken back to Chang'an, where he was executed.[84] In the same year Tang also defeated Qieshi in Chitral and the Turgesh.[91]

Talas (751)Edit

In 751, Tang forces under Gao Xianzhi suffered a major defeat at the Battle of Talas against the Abbasid when their Karluk allies defected to the enemies.[84]

Qocho (869–870)Edit

In 869 and 870, the Kingdom of Qocho attacked the Guiyi Circuit but was defeated.

Qocho (876)Edit

In 876, Qocho conquered Yizhou.

Khitans and MoheEdit

Balhae (698)Edit

 
Balhae in 830

In 698, Dae Jo-yeong's Goguryeo remnants and Mohe people defeated Tang forces at the Battle of Tianmenling. He then established the state of Jin (震) in Manchuria, later renamed Balhae (渤海) in 712.[147]

1st Khitans (696)Edit

 
The Khitan rebellion led by Li Jinzhong, 696

In 696, Li Jinzhong (Mushang Khan) of the Khitans along with his brother-in-law Sun Wanrong rebelled against Tang hegemony and attacked Hebei. Li died soon after and Sun succeeded him, only to be defeated by the Second Turkic Khaganate.[99]

2nd Khitans (720)Edit

In 720, the governor-general of Yingzhou sent 500 Tang soldiers to back Suogu against Ketuyu in Khitan politics but was defeated.[148]

3rd Khitans (730–735)Edit

In 730, Ketuyu attacked the Tang but was heavily defeated in a counterattack in 732. Although he allied himself with the Türks, they were defeated again in 733 by a Tang and Kumo Xi army. Zhang Shougui defeated the Khitans again in 734 and Ketuyu was finally murdered by Guozhe in 735, who became the next leader of the Khitans.[89][149][150][121]

4th Khitans (736)Edit

In 736, An Lushan attacked the Khitans but was defeated.[151]

5th Khitans (745)Edit

In 745, two Khitan tribes revolted and were defeated by An Lushan.[148]

6th Khitans (752)Edit

In 752, An Lushan attacked the Khitans.[152]

NanzhaoEdit

 
Nanzhao (738–937)

1st Nanzhao (751)Edit

In 751, Xianyu Zhongtong attacked Nanzhao with an army of 80,000 but was utterly defeated, losing three quarters of his original force.[153]

2nd Nanzhao (754)Edit

In 754, Yang Guozhong invaded Nanzhao but failed to engage with the enemy until supplies ran out, at which time they were attacked and routed.[153]

3rd Nanzhao (829)Edit

In 829, Nanzhao sacked Chengdu.[154]

4th Nanzhao (846)Edit

In 846, Nanzhao raided Annan.[155]

5th Nanzhao (861)Edit

In 861, Nanzhao attacked Bozhou and Annan but was repulsed.[156]

6th Nanzhao (863–866)Edit

In 863, Nanzhao conquered Annan. The Tang launched a counterattack in 866 under Gao Pian and retook it.[144]

7th Nanzhao (869–870)Edit

In 869, Nanzhao laid siege to Chengdu but failed to take it.[157]

AnnanEdit

Lý Tự Tiên (687)Edit

In 687, Lý Tự Tiên and Đinh Kiến rebelled at Đại La in response to a raise in harvest tax.[158]

Mai Thúc Loan (722)Edit

In 722, Mai Thúc Loan rebelled in Annan and was defeated.[159]

Sea people (767)Edit

In 767, sea people invaded Annan.[159]

Phùng Hưng (785–791)Edit

In 785, Phùng Hưng rebelled. Tang forces retook Annan in 791.[160]

Champa (803)Edit

In 803, Champa seized southern Annan.[155]

Dương Thanh (820–837)Edit

In 820, Dương Thanh seized Đại La but the Tang regained control in 837.[155]

Annan (858)Edit

In 858, rebellion broke out in Annan and was defeated.[161]

An Lushan Rebellion (755–763)Edit

 
An Lushan Rebellion, 755–763

An Lushan (755–757)Edit

An Lushan was the son of a Turkish mother and Sogdian father. Their family fled to the Tang in 716 due to turmoil in the Second Turkic Khaganate.[162]

Illiterate in Chinese, An Lushan nonetheless rose to become a prominent military commander in the Tang military. By 733, An had become a deputy under Youzhou governor Zhang Shougui. In 742, An became jiedushi of Pinglu. In 744, An also became jiedushi of Youzhou (Fanyang). In 751, An was given command of Hedong.[162]

When the chancellor Yang Guozhong started arresting An's supporters in the capital in 755, An rose in revolt under the pretense of having received a secret edict to suppress Yang.[163]

An marched south with 150,000 men from his base in Youzhou on 16 December 755. News of the rebellion reached the capital on 22 December. Emperor Xuanzong of Tang immediately sent order to raise soldiers in Hedong and Luoyang with Feng Changqing in overall command. An crossed the Yellow River northeast of Luoyang on 8 January 756. Feng attempted to block An at Hulao Pass with 60,000 soldiers, but his hastily raised army could not stand up to An's elite cavalry, who trampled them under their hooves. After two more battles, Feng fled west to Shanzhou and An took Luoyang on 19 January 756.[164]

Feng was joined by Gao Xianzhi, who commanded another 50,000 troops, but they decided to withdraw from Shanzhou and retreat to the more defensible Tong Pass. However the retreat degenerated into a confused and panicked flight. Gao's eunuch supervisor Bian Lingcheng denounced the commanders and had them put to death on Xuanzong's orders.[165]

Gao and Feng's troops were joined by 80,000 soldiers recalled from the frontier under the command of Geshu Han. Together, an army around 200,000 strong now stood guard at Tong Pass, blocking An's way to Chang'an.[165]

On 5 February, An Lushan proclaimed himself Emperor of Yan. In the same month, Tang loyalists under the leadership of Li Guangbi rebelled against An in Hebei. An sent Shi Siming against the rebels. Shi raced ahead of the main army with his mounted troops to intercept Li Guangbi's Shuofang army near the town of Changshan. Li took Changshan in advance and set up his men with their backs to the town walls to prevent a sneak attack. The spearmen formed a dense defensive formation while 1,000 crossbowmen divided into four sections to provide continuous volley fire. When Shi's cavalry engaged Li's Shuofang army they were completely unable to close in on his troops and suffered heavy losses, forcing a withdrawal. In May, Li was joined by the new jiedushi of Shuofang, Guo Ziyi, and besieged Shi at Boling.[29]

In the summer of 756, Yang Guozhong convinced Xuanzong to order Geshu Han to take the offensive against An. On 5 July, the Tang army marched toward Shanzhou. On 7 July, the Tang met the rebels in battle and were defeated. The Tang sent in their vanguard, who were lured into a narrow defile where it became impossible for them to use their weapons. The rebel Tongluo cavalry attacked them from the rear, causing mass panic in the main army, which dissolved into a rout. The rebels followed up by taking the Tong Pass and capturing Geshu Han, who was sent to Luoyang.[166]

On 12 August, Xuanzong fled for Chengdu. When they reached the Mawei post station, the soldiers accompanying him forced him to have both Yang Guozhong and Yang Guifei put to death. The rebels took Chang'an soon after.[166]

On the same day Xuanzong fled Chang'an, the crown prince Li Heng declared himself emperor (posthumously Emperor Suzong of Tang) at Lingwu. The Shuofang army abandoned their campaign in Hebei and marched west to protect their new emperor.[166]

Despite taking Chang'an, An Lushan's forces failed to make any headway in the south. Major towns such as Yingchuan, Suiyang, and Nanyang resisted all attempts to capture them.[167]

In early 757, An Lushan was killed by his close associates, who installed his son An Qingxu as the new emperor.[167]

An Qingxu (757–759)Edit

On 29 October 757, a Tang-Uyghur army under the command of Guo Ziyi marched for Chang'an. On 13 November, the Tang engaged in battle with the rebels near Xiangji Temple. The rebels were initially successful in driving back the Tang line and throwing them into confusion, but the Tang counterattacked from the rear with a contingent of Uyghur cavalry under Pugu Huaien. When the rebel cavalry forces were defeated, Pugu launched an attack on the primary body of the rebel army, defeating them. The Tang recovered Chang'an on 14 November.[167]

The rebels tried to stop the Tang advance on Luoyang in the narrow defiles where Geshu Han had previously been defeated, but the Tang routed them on 30 November and entered Luoyang on 3 Demcember. An Qingxu fled to southern Hebei.[167]

In November 758, the Tang launched another campaign against An and laid siege to him in Xiangzhou (Anyang). On 7 April 759, Shi Siming attacked the Tang army, but a large dust storm broke off the engagement. While Shi was able to recover fairly quickly, the storm sent a wave of confusion throughout the large Tang army. Each Tang commander decided to retreat in a different direction to their own territory.[168]

On 10 April, Shi Siming killed An Qingxu.[168]

Shi Siming (759–761)Edit

In the fall of 759, Shi Siming captured Luoyang, whose commander Li Guangbi decided to retreat to a more defensive position at Heyang, northeast of Luoyang. The situation remained static for three years, with neither side able to make any headway against the other. Shi Siming was killed by his son, Shi Chaoyi, in the spring of 761.[169]

Shi Chaoyi (761–763)Edit

In the fall of 762, the Tang launched a two pronged attack on Shi Chaoyi in Luoyang. Pugu Huai'en and Li Guangbi defeated the rebels in November and Shi fled east, but his subordinate generals refused to harbor him. One by one, the rebel generals submitted to nominal Tang authority while still retaining control of their territory and armies, effectively becoming autonomous kingdoms within the empire of the Tang. Shi Chaoyi committed suicide in 763, putting an end to the rebellion started by An Lushan in 755.[169]

Warlords (Jiedushi)Edit

 
Rebellious provinces in the post-An Lushan Tang Empire. Red provinces were lost to the Tang forever while the orange provinces were reincorporated.

In the post-An Lushan Tang empire, approximately 75% of all provincial governors were military men regardless of their titles and designations. Four of the them were former rebels in Hebei. In return for their surrender, they were allowed to remain in command of their armies and to govern their own land as they saw fit. They were Zhaoyi (modern Changzhi), Youzhou (modern Beijing), Chengde, and Weibo. The provincial governors in Pinglu (Shandong) and Huaixi (Zhangyi) started out as a loyalists but joined the former rebels as an autonomous powers. In 775, Tian Chengsi of Weibo attacked and absorbed a large portion of Xiangzhou from Zhaoyi, resulting in the Three Fanzhen of Hebei. Although nominally subordinate to the Tang by accepting imperial titles, these former rebels governed their territories as independent fiefdoms with all the trappings of feudal society, establishing their own family dynasties through systematic intermarriage, collecting taxes, raising armies, and appointing their own officials.[170]

From the time of Qin and Han and the Six Dynasties there had been rebellious generals but no such thing as rebellious soldiers. After the middle years of the Tang, however, mutinies in the provincial garrisons happened all the time.[171]

— Zhao Yi

ChengdeEdit

Chengde was ruled by Li Baochen, a man of Kumo Xi origins. He was succeeded by his son Li Weiyue in 781, but he was killed by the Khitan Wang Wujun in 782. Wang Wujun was succeeded by his son Wang Shizhen in 801. Shizhen was succeeded by his son Wang Chengzong in 809. Chengzong was succeeded by his brother Wang Chengyuan in 820. Chengyuan abdicated and acquiesced to imperial control. However the court appointed governor of Chengde, Tian Hongzheng, was killed by the Uyghur Wang Tingcou in 821. Tingcou was succeeded by his son Wang Yuankui in 834. Yuankai was succeeded by his son Wang Shaoding in 855. Shaoding grew ill and died in 857, and was succeeded by his brother Wang Shaoyi. Shaoyi died in 866 and was succeeded by his nephew Wang Jingchong. Jingchong was succeeded by his son Wang Rong in 883.[170] Wang Rong's state of Zhao was destroyed in 921 when he was killed in a coup by his adopted son Zhang Wenli, who in turn died soon after. Wenli's son Zhang Chujin was captured by Li Cunxu the next year. The people of Zhao hated the Zhang family and requested that his family be turned into minced meat. Chujin was dismembered at the marketplace.[172][173]

WeiboEdit

Tian Chengsi of Weibo was succeeded by his nephew Tian Yue in 779. Yue was killed by his cousin Tian Xu in 784. Xu was succeeded by his son Tian Ji'an in 796. Tian Ji'an was succeeded by his son Tian Huaijian in 812. On 17 November 812, Tian Huaijian was removed from power and succeeded by a distant relative, Tian Hongzheng. Tian Hongzheng submitted to imperial authority and the court made him jiedushi of Chengde, however he was killed by Wang Tingcou on 29 August 821. The post of Weibo was taken up by Li Su, who grew ill soon after and was replaced by Tian Hongzheng's son, Tian Bu. Tian Bu tried to take vengeance for his father by attacking Chengde, but his soldiers deserted him. He committed suicide on 6 February 822. Shi Xiancheng took over Weibo and eventually submitted to imperial authority. However the soldiers grew angry that Shi was stripping Weibo of its wealth in preparation to move to another imperial post, and killed him on 30 July 829 under the leadership of He Jintao. Jintao was succeeded by his son He Hongjing in 840. Hongjing was succeeded by his son He Quanhao in 866. He Quanhao was killed in a mutiny by soldiers in 870 and replaced by Han Yunzhong. Yunzhong was succeeded by his son Han Jian in 874. Han Jian tried to expand Weibo's territory but failed and was replaced by Le Yanzhen in 883. Le Yanzhen abdicated in 888 and was replaced by Zhao Wenbian, who was killed and replaced by Luo Hongxin. Hongxin was succeeded by his son Luo Shaowei in 898. Shaowei's territory was eventually integrated into Later Liang, and he died as grand preceptor and palace secretary in 910.[174]

The classic example is the Wei-Bo “headquarters guard” (yajun), an elite corps that had been formed by that province’s first military governor, Tian Chengsi. The men of this force, originally 5000 strong, were chosen for their size and strength; they were much better rewarded than the rest of the army, and membership eventually became a hereditary privilege that was passed from father to son. Extremely jealous of their privileges, they came to dominate the politics of Wei-Bo in the ninth century and intervened to install military governors of their own choosing in 812, 822, 829, 870, 883, and 888.[175]

— David Graff

YouzhouEdit

Li Huaixian of Youzhou (Lulong) was killed by Zhu Xicai in 768. Zhu Xicai was killed by Li Huaiyuan in 772 and replaced by Zhu Ci. In 774, Zhu Ci submitted to Tang authority, but his brother Zhu Tao remained in Youzhou as acting jiedushi. In 783, Zhu Ci rebelled and declared himself emperor in Chang'an but was defeated the next year. Zhu Ci died in 785 and was succeeded by his cousin Liu Peng. Liu Peng died in the same year and was succeeded by his son Liu Ji. Liu Ji was poisoned by his son Liu Zong in 810. In 821, Liu Zong abdicated and became a monk. The court appointee, Zhang Hongjing, was removed in a mutiny and replaced by Zhu Kerong. Zhu Kerong was killed by his soldiers in 826 and replaced with his son Zhu Yansi. Zhu Yansi was killed in the same year by his officer Li Zaiyi. Li Zaiyi was ousted by Yang Zhicheng in 831. Yang Zhicheng was removed from power by his soldiers in 834 and replaced with Shi Yuanzhong. Shi Yuanzhong was killed in 841 and two more followed him in quick succession before Zhang Zhongwu took power in Youzhou. Zhongwu was succeeded by his son Zhang Zhifang in 849. He was immediately ousted by his soldiers and replaced by Zhou Lin. Zhou Lin died the next year and was succeeded by Zhang Yunshen. Yunshen was succeeded by his son Zhang Jianhui in 872. Zhang Jianhui fled to the Tang court in 873 and was succeeded by Zhang Gongsu. Zhang Gongsu was defeated by Li Maoxun in 875. Maoxun abdicated to his son Li Keju in 876. Li Keju was attacked by Li Quanzhong in 885 and committed suicide. Quanzhong was succeeded by his son Li Kuangwei the next year. Kuangwei was overthrown by his brother Li Kuangchou in 893. Li Keyong attacked Youzhou in 894 and forced Li Kuangchou to flee to Yichang (modern Cangzhou). Yichang's governor Lu Yanwei killed Li Kuangchou. Youzhou was given to Liu Rengong. Rengong ruled until 907 when he was overthrown by his son Liu Shouguang. Shouguang's short lived state of Yan was conquered by Li Cunxu in 913.[176]

ZhaoyiEdit

Xue Song of Zhaoyi (modern Changzhi) was succeeded by his son Xue Ping in 773. Xue Ping immediately abdicated to his brother Xue E. Tiang Chengsi of Weibo invaded Zhaoyi in 775, conquering four of its six prefectures. Xue E fled to the Tang court, who took control of the two remaining prefectures.

Liu Wu submitted to imperial authority and was made jiedushi of Zhaoyi in 820. Liu Wu was succeeded by his son Liu Congjian in 825. When Liu Congjian died in 843, imperial forces invaded Zhaoyi and slaughtered his family.

PingluEdit

Li Zhengji of Pinglu was succeeded by his son Li Na in 781. Li Na was succeeded by his son Li Shigu in 792. Shigu was succeeded by his half brother Li Shidao in 806. In 818, imperial forces invaded Pinglu. Li Shidao was killed by his own officer Liu Wu in 819. Liu Wu submitted to imperial authority and was made jiedushi of Zhaoyi (modern Changzhi) in 820.

Bian-song (Xuanwu)Edit

Huaixi (Zhangyi)Edit

Huang Chao Rebellion (874–884)Edit

 
Huang Chao Rebellion, 874–884

In the early 870s, drought and famine in Henan led to widespread banditry. In 874, the bandits rebelled under Wang Xianzhi in Changyuan, and ravaged the region between the Changjiang and Yellow River. When Wang Xianzhi died in 878, he was succeeded by Huang Chao, a failed examination candidate from a wealthy salt trading family.[177]

Huang Chao led his forces south to avoid conflict with government forces and sacked the city of Guangzhou in the summer of 879. From there he moved north again, crossing the Changjiang in the summer of 880, and capturing Luoyang on 22 December. Huang Chao's army easily routed the old and feeble soldiers of the Shence Army in January 881 and took Chang'an on 8 January. Emperor Xizong of Tang fled to Sichuan. In 883, the Tang court called in the Shatuo Turk Li Keyong, who defeated Huang Chao's army at Liangtian Hill. Huang Chao evacuated Chang'an in May and headed eastward. After an unsuccessful siege operation and several defeats against imperial forces, Huang Chao was finally hunted down in Shandong and killed in the summer of 884.[178]

Miscellaneous rebellionsEdit

Li Jingye (684)Edit

In 684, Li Jingye rebelled in Yangzhou and was defeated.[79]

Pugu Huai'en (764)Edit

In 764, Pugu Huai'en rebelled and joined the Uyghur Khaganate and Tibetan Empire in attacking Chang'an, but Pugu died on the way there.[179]

Li Lingyao (777)Edit

In 777, Li Lingyao rebelled in Biansong (Kaifeng) and was defeated. The majority of his territory was taken over by Li Zhengji of Pinglu.[180]

Jingyuan Incident (781–786)Edit

When Li Baochen of Chengde died in 781, Emperor Dezong of Tang refused to recognize his successor, Li Weiyue. In response, Li Weiyue rebelled with the support of Tian Yue of Weibo and Li Na of Pinglu. Zhu Tao of Youzhou sided with the court and dealt several defeats to Li, and as a result Li was overthrown by Wang Wujun. However both Wang and Zhu were disappointed in the rewards they received for their service and rebelled against the Tang in 782. By the end of the ear, the jiedushi of Huaixi (Changzhi), Li Xilie, had also rebelled, cutting off the Bian Canal.[181]

On 23 November 783, troops from Jingzhou passed through Chang'an on their way to the battlefront. When they found out that they had only been paid a fraction of the normal soldier's salary, they rebelled and took the capital. Dezong fled to Fengtian while the Jingzhou troops enthroned Zhu Ci as the new emperor. In 784, Dezong pardoned Wang Wujun, who then turned against Zhu Tao and defeated him on 29 May. With the northeastern front settled, Tang forces recovered Chang'an in the next month. Li Xilie was poisoned by Chen Xianqi in 786 and the area was brought back under nominal Tang authority.[182]

Li Huaiguang (784–785)Edit

In 784, the Shuofang general Li Huaiguang rebelled. His troops refused to his orders and he committed suicide in 785.[179]

Wu Shaocheng (799–800)Edit

In 799, Wu Shaocheng of Huaixi (Changzhi) invaded Tang territory. After several inconclusive battles, Wu halted his aggression and received a pardon from Emperor Dezong of Tang.[182]

Chengde (809–810)Edit

In 809, the Tang attacked Chengde. The invasion ended in failure and peace was restored in 810.[183]

Huaixi (815–817)Edit

In 815, the Tang invaded Huaixi (Changzhi) with a force 90,000 men. They surrounded the warlord province but failed to make headway against its fortifications for two years. In the winter of 817, the Tang general Li Su penetrated the border defenses during a snowstorm took the undefended capital, ending the war.[183]

Pinglu (819)Edit

In 819, the Tang invaded Pinglu. Its jiedushi, Li Shidao, was killed by his own officer, who submitted to Tang authority.[183]

Qiu Fu (860)Edit

In 860, the Qiu Fu Uprising in Zhejiang was suppressed.[144]

Guizhou (868–869)Edit

In 868, the garrison of Guizhou rebelled under Pang Xun and moved north, taking the provincial capital by the end of the year. They were crushed in the fall of 869 by Shatuo cavalry commander Zhuye Chixin.[144]

Collapse (886–907)Edit

 
Collapse of the Tang dynasty, 907

While the rebel forces of Huang Chao were defeated in 884, Tang authority had essentially ceased to exist. The newly recruited army of Tian Lingzi, 54,000 strong, was soon destroyed trying to bring two northern warlords to heel. Emperor Xizong and his successors Zhaozong and Ai Di became pawns of the military governors.[178]

The Tang Empire collapsed into numerous rival warlord states, ushering in the period of Five Dynasties and Ten Kingdoms. In the south emerged the kingdoms of Wuyue, Min, and Southern Han. In the north, Li Keyong of Hedong and Zhu Quanzhong of Bianzhou vied for supremacy. Zhu held the last two Tang emperors as captives and controlled the North China Plain. He made an unsuccessful attempt to murder Li in 884 and proclaimed himself Emperor of Later Liang in 907. Zhu's Liang dynasty survived for only 11 years after his death in 912, and it was conquered in 923 by Li Keyong's successor Li Cunxu, founder of Later Tang. In 937, the Later Tang gave way to a number of short lived military regimes from which the Song dynasty eventually emerged, reuniting most of China by 979. However the Song never quite achieved the hegemonic status of the early Tang. It was, militarily speaking, at best only equal and at worst completely inferior to its northern neighbor, the Khitan Liao dynasty, followed by the Jurchen Jin dynasty.[184]

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