Wang's current team consists of her father Wang Peng; a Serbian technical coach, Aleksandar Slović, who won the men's singles title at 2009 Summer Universiade and once trained with Novak Djokovic when young; a fitness coach from Croatia; and a Chinese physio from Nanjing. With the help of Slović, Wang was able to train with a few Serbian players abroad. She currently trains at the Tennis & Badminton Centre of the Shenzhen Sports Centre.
Wang was born in Shenzhen, Guangdong. Her father, Wang Peng (born in Hangzhou, Zhejiang), is a former head coach of the Shenzhen tennis team and the Chinese women's national tennis team, but resigned from the latter to concentrate on his daughter's tennis career. Her mother was a former player in the Zhejiang women's basketball team. Both of them have devoted themselves to accompanying Wang everywhere. Wang showed great enthusiasm for tennis from early childhood and, coached by her father, she started playing properly at the age of five.
Wang booked her ticket to a Grand Slam debut in the 2018 Australian Open on 3 December 2017 in Zhuhai, by winning the Asia-Pacific Wildcard playoff, coming back to edge out the Papua New Guinean No. 1, Abigail Tere-Apisah, in the final. Tere-Apisah was only two points away from victory when leading 5–3, 30–0 in the second set, looking to become the first player from Papua New Guinea to compete in a Grand Slam main draw, when momentum shifted and Wang, demonstrating fearlessness for her age, won the next seven points before going on to level the match. Wang eventually won the match in three sets, seizing the most crucial break with a splendid backhand passing shot in the ninth game, and then closed out the final set after saving four break points. “It's probably the most important day in my life so far,” Wang said in the post-match news conference to CCTV Sports Channel, the official TV broadcaster of the Australian Open in China. At the age of 16, she is the youngest Chinese player to make a Grand Slam main draw.
At the Australian Open, as the second youngest competitor in the main draw (just older than 15-year-old Marta Kostyuk), Wang lost her debut Grand Slam match to Alizé Cornet, in straight sets. But, going through to the Junior girls' doubles final with her partner Liang En-shuo from Taiwan, Wang claimed the title in a close match against Violet Apisah of Papua New Guinea (Abigail Tere-Apisah's niece) and Lulu Sun, a New Zealand-born Swiss player of Chinese descent.