A Better Tomorrow
In 1986, Tsang worked as taxi cab owner, Ken, in John Woo's "A Better Tomorrow". Subsequent collaborations with Woo included the role of Ken in "A Better Tomorrow 2" in 1987, police officer Danny Lee's murdered partner in "The Killer" in 1989, and the strict adoptive father of Chow Yun-fat, Leslie Cheung and Cherie Chung in "Once a Thief" in 1991.