How many movies have Chang Jen-Chieh and Yu Tien-Lung collaborated on?

They have worked on 3 movies together! Their first movie together was The Eight Dragon Swords (1971) while their highest rated movie together was Five Kung Fu Daredevil Heroes (1977). They have not worked together since Five Kung Fu Daredevil Heroes (1977). They are most known for their action films together.