Young and Dangerous (1996)
Young and Dangerous is a 1996 Hong Kong crime film about a group of triad members, detailing their adventures and dangers in a Hong Kong Triad society. Directed by the film's cinematographer Andrew Lau, the film features a large ensemble cast, which includes Ekin Cheng, Jordan Chan, Francis Ng, Gigi Lai and Simon Yam.
More at Wikipedia.