How many movies have Mona Fong Yat-Wah and Wong Chi-Keung collaborated on?

They have worked on 6 movies together! Their first movie together was Challenge of the Gamesters (1981) while their highest rated movie together was The 8 Diagram Pole Fighter (1984). They have not worked together since My Name Ain't Suzie (1985). They are most known for their action films together.