How many movies have Chow Ga-Chong and Chow Siu-Loi acted in together?

They have worked on 3 movies together! Their first movie together was The Knight of Knights (1966) while their highest rated movie together was The Lady Hermit (1971). They have not worked together since Intimate Confessions of a Chinese Courtesan (1972). They are most known for their action films together.