How many movies have Ko Chun-Hsiung and Shen Yeh-Kang collaborated on?

They have worked on 5 movies together! Their first movie together was The Bride Who Has Returned From Hell (1965) while their highest rated movie together was Love Styles XYZ (1971). They have not worked together since Love Styles XYZ (1971). They are most known for their romance films together.