How many movies have Lee Sang-man and Lee Yea-chun collaborated on?

They have worked on 11 movies together! Their first movie together was Piagol (1955) while their highest rated movie together was Prince Yeonsan (1961). They have not worked together since The Korean Instrument with 12 Strings (1964). They are most known for their drama films together.

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Kim In-dal (Chang-soo's friend)
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Agari, the Boss