How many movies have Leung Hak-Shun and Walter Tso Tat-Wah 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 A Friend from Inner Space (1984). They are most known for their comedy films together.