How many movies have Lee Jang-ho and Na Han-il collaborated on?

They have worked on 4 movies together! Their first movie together was Children Of Darkness Part 1, Young-ae the Songstress (1981) while their highest rated movie together was Lee Jang-ho's Baseball Team (1986). They have not worked together since Lee Jang-ho's Baseball Team 2 (1988). They are most known for their drama films together.