How many movies have Chim Bing-Hei and Norman Tsui Siu-Keung acted in together?

They have worked on 2 movies together! Their first movie together was Tiger on the Beat 2 (1990) while their highest rated movie together was In the Line of Duty 7: Sea Wolves (1991). They have not worked together since In the Line of Duty 7: Sea Wolves (1991).