How many movies have Kim Ho-yeon and Ku Bong-seo acted in together?

They have worked on 5 movies together! Their first movie together was Seong Chun-hyang (1961) while their highest rated movie together was Prince Yeonsan (1961). They have not worked together since 한양에서 온 성춘향 (1963). They are most known for their drama films together.