How many movies have Lawrence Wong Ka-Hay and Mona Fong Yat-Wah collaborated on?

They have worked on 18 movies together! Their first movie together was The 36th Chamber of Shaolin (1978) while their highest rated movie together was Hong Kong Playboys (1983). They have not worked together since Carry on Doctors and Nurses (1985). They are most known for their action films together.