How many movies have Wah Wan-Fung and Yeung Yip-Wang acted in together?

They have worked on 4 movies together! Their first movie together was Midnight Terror (1962) while their highest rated movie together was The 7 Tyrants of Jiangnan (1962). They have not worked together since The Devil and Her Magic Needles, Part Two (1964). They are most known for their action films together.