How many movies have Mona Fong Yat-Wah and Tsui Oi-Sam collaborated on?

They have worked on 8 movies together! Their first movie together was The Cunning Hustler (1978) while their highest rated movie together was Monkey Kung Fu (1979). They have not worked together since Girl with the Diamond Slipper (1985). They are most known for their comedy films together.