How many movies have Jeong Changhyeon and Ryoo Seung-wan collaborated on?

They have worked on 1 movie together! Their first movie together was The City of Violence (2006) and was their highest rated movie together. They have not worked together since The City of Violence (2006).

Role
Corridor Guard
Crew
Director
Crew
Writer
Role
Seok-hwan
Crew
Executive Producer