How many movies have Eddie Ma Poon-Chiu and Rosamund Kwan collaborated on?

They have worked on 4 movies together! Their first movie together was Twinkle, Twinkle, Lucky Stars (1985) while their highest rated movie together was Project A: Part II (1987). They have not worked together since Once Upon a Time in China II (1992). They are most known for their comedy films together.