How many movies have Gang Yong-ho and Lee Woon-cheol collaborated on?

They have worked on 1 movie together! Their first movie together was 끼있는 여자는 밤이슬을 좋아한다 (1991) and was their highest rated movie together. They have not worked together since 끼있는 여자는 밤이슬을 좋아한다 (1991).