Shing Fui-On is a Hong Kong actor. He is mainly known for supporting roles and (according to IMDB) has only had one leading role so far ("The Blue Jean Monster"). He has appeared repeatedly as a supporting actor in films with Chow Yun Fat including "A Better Tomorrow", "A Better Tomorrow II", "The Killer", "Tiger on Beat", "Prison on Fire", … Wikipedia
The definitive Wikipedia entry for Shing Fui-On. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/Shing_Fui-On