How many movies have Peter Cheung Yiu-Chung and William Duen Wai-Lun collaborated on?

They have worked on 6 movies together! Their first movie together was Police Story 3: Super Cop (1992) while their highest rated movie together was The Legend of Drunken Master (1994). They have not worked together since Big Bullet (1996). They are most known for their action films together.