How many movies have Lau Sin-Mung and Wu Chia-Hsiang acted in together?

They have worked on 3 movies together! Their first movie together was Corpses at Large (1960) while their highest rated movie together was Sun, Moon and Star: Part 1 (1961). They have not worked together since Sun, Moon and Star: Part 1 (1961). They are most known for their drama films together.