How many movies have Leung Hak-Shun and Sai Gwa-Pau acted in together?

They have worked on 4 movies together! Their first movie together was Rolls, Rolls, I Love You (1982) while their highest rated movie together was Winners & Sinners (1983). They have not worked together since The Boxer's Omen (1983). They are most known for their action films together.