How many movies have Park Am and Yang Dong-Wuk collaborated on?

They have worked on 2 movies together! Their first movie together was Thunderhawk 4 - Mobilization Of Thunder-V (1987) while their highest rated movie together was Thunderhawk 5 - New Machine Thunderhawk (1988). They have not worked together since Thunderhawk 5 - New Machine Thunderhawk (1988).