Hung Yan-yan (born 25 February 1962, also credited as 熊欣欣 or Xiong Xin Xin)[1] is a Hong Kong martial artist, actor, stuntman and action director originally from Liuzhou, Guangxi, China.
After training, he went to Hong Kong and was discovered by famous filmmaker Lau Kar-leung, who was at that time filming Martial Arts of Shaolin starring Jet Li, and hired Hung as Li's stunt double.
He was also featured a role as the leader of the White Lotus Sect, Kau-kung "Priest" Gao.
He was so nicknamed due to his disability, being the seventh member of wealthy rival martial artist, Chiu Tin-bak's gang.
Hung was action director in Chin Siu-tung's Blacksheep Affair and again in Tsui Hark's 2000 film, Time and Tide starring Nicholas Tse.