How many movies have Chang Hoon and Lee Seo-gu collaborated on?

They have worked on 5 movies together! Their first movie together was Lady Jang (1961) while their highest rated movie together was Femme Fatale, Jang Hee Bin (1968). They have not worked together since Femme Fatale, Jang Hee Bin (1968). They are most known for their history films together.