How many movies have Kim Hui-su and Kim Seong-ok collaborated on?

They have worked on 6 movies together! Their first movie together was A Red-and-blue Gauze Lantern (1967) while their highest rated movie together was Femme Fatale, Jang Hee Bin (1968). They have not worked together since Don't Torture Me Anymore (1971). They are most known for their drama films together.