How many movies have Jessica Chan Pui-Wah and Peter Cheung Yiu-Chung collaborated on?

They have worked on 18 movies together! Their first movie together was Encounter of the Spooky Kind (1980) while their highest rated movie together was Righting Wrongs (1986). They have not worked together since She Shoots Straight (1990). They are most known for their action films together.