How many movies have Heo Chang-kang and Yim Woon-hak acted in together?

They have worked on 11 movies together! Their first movie together was King Gojong and Martyr An Jung-Geun (1959) while their highest rated movie together was Prince Yeonsan (1961). They have not worked together since A Sword Under the Moon (1970). They are most known for their drama films together.