Wangjin is a kind of traditional headgear worn by adult men in the Chinese Ming Dynasty.In ancient China, wangjin usually made by horsetail or fibers, but also made of silk/linen mixed fabrics. Similar head-wears to the wangjin was also worn during the Vietnamese Later Lê dynasty to the Nguyễn dynasty and in the Ryukyu Kingdom. Another similar headwear to the Chinese wangjin is the Korean manggeon of the Joseon period.
According to the legend, the earliest people who wore wangjin were Taoist priests. One day, the Hongwu Emperor of Ming Dynasty wore common clothes to visit the folk and he saw a Taoist priest wearing wangjin on top of his head. The emperor asked what it was, to which the priest answered, "This is wangjin. Wear it on top of your head, then your hair will gather together" (ref. "此曰網巾. 裹以頭, 則萬髮俱齊"). The emperor was very satisfied with the answer that also referred to uniting the country. After the emperor returned to his palace, he ordered all the men in the country, from the emperor to the common man, to wear wangjin. Since then, wangjin has become the common headgear of adult men in the entire country.
Wang Bu, a man from the Qing Dynasty, once introduced the wangjin: It looks like a fishing net. The two borders are adorned with two small circles made of gold, jade or copper and tin. Tie small ropes at each end of the side, cross in two circles, tie the top to the forehead, and make the side and eyebrows flush. There are also many styles of wangjin. In the Wanli period of the Ming Dynasty, people began to use fallen hair and horsehair instead of silk to make wangjin.
Nowadays, historians and the people interested in Chinese history research ancient books and historical relics to restore various forms of the wangjin.