How many movies have Ku Bong-seo and Yun-su Gyeong acted in together?

They have worked on 5 movies together! Their first movie together was Iljimae the Chivalrous Robber (1961) while their highest rated movie together was Tyrant Yeonsan (1962). They have not worked together since A Bride on the Second Floor (1968). They are most known for their drama films together.