How many movies have Jeffrey Lau Chun-Wai and Stephen Chow Sing-Chi collaborated on?

They have worked on 12 movies together! Their first movie together was Thunder Cops II (1989) while their highest rated movie together was A Chinese Odyssey Part Two: Cinderella (1995). They have not worked together since Kung Fu Hustle (2004). They are most known for their comedy films together.