Xiaohai

Zeng Zhuojun (; born 26 April 1989), better known as Xiaohai, is a Chinese professional fighting game player and streamer. He is widely considered one of the greatest fighting game players of all time, winning total prize money worth around 500,000.00-600,000.00 USD in 2024, with half of the wins coming from only one tournament win in Street Fighter 6, which set an esports record. He has since defended this 2024 Street Fighter 6 win and won US$250,000.00 again the next year, further increasing his earnings. He is acclaimed as the greatest and most successful player in the history of The King of Fighters (KOF), having dominated the franchise's competition across many different eras and titles.

After his fourth EVO championship victory in KOF and simultaneous ninth-place finish in Street Fighter 6 at the Evo 2023, Xiao Hai completely narrowed down his focus into Street Fighter 6 in preparation for the first major Street Fighter World Cup for the title in 2024. There, he convincingly beat Dual Kevin and Zhen in the First Phase, then eliminated Problem X and NoahTheProdigy from competition before moving into the Final Phase. At the final phase, he beat Hikaru in a nail-biter set to advance the tournament finals, where he won against the Japanese player Kawano.

During the 2025 Esports World Cup, 36-year-old Xiao Hai defeated 15-year-old Chilean player Blaz 5–4 in Street Fighter 6 to claim the championship, becoming the first player (including teams) in EWC history to successfully defend a title. He also placed 2nd in Fatal Fury: City of the Wolves, nearly beating Japanese player GO1.

Honors Xiaohai was inducted into the Esports Hall of Fame in China.He won the Esports Controller Player of the Year in 2025 at the Esports Awards, becoming the first fighting game player in history to receive an Esports Awards title.

Public image Xiaohai won tournaments at a young age against older competitors, hence the player ID "Xiaohai" was adopted, which means "child" in Chinese. Xiaohai is well known for competing in tournaments with only one hand, his left hand, on the arcade controller. He is known for his neutral game, and for opening the door to more Asian competitors in fighting games. Gamer Justin Wong has gone on to say that his biggest one-sided defeat was in a match in The King of Fighters XV against Xiaohai in 2025.

He is widely considered the greatest player of all time in The King of Fighters, and one of the greatest players in many fighting games, such as Street Fighter.

Personal life Xiaohai maintains his residency in Shanghai, China. He is married to Elena Zeng, who often accompanies him in tournaments.