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

They have worked on 11 movies together! Their first movie together was The Sentimental Swordsman (1977) while their highest rated movie together was The Duel of the Century (1981). They have not worked together since Shaolin Intruders (1983). They are most known for their action films together.