How many movies have Chang Pao-Shan and Stanley Chow Fook-Leung collaborated on?

They have worked on 3 movies together! Their first movie together was Return of the 18 Bronzemen (1976) while their highest rated movie together was Shaolin Iron Claws (1978). They have not worked together since The Crane Fighter (1979). They are most known for their action films together.