Complex sentence: Graduating with a degree in theatre from Dongguk University, Choi first made a name for himself on the stage before breaking into the film world with roles in Park Jong-won's early films "Kuro Arirang" and the acclaimed "Our Twisted Hero".
Split into simpler sentences: Graduating with a degree in theatre from Dongguk University, Choi began his career as a theatre actor. He then started filming, playing roles in Park Jong-won's early movies, like "Kuro Arirang" and "Our Twisted Hero".