As a soloist he has collaborated with the French Seo Dance Company, among others. Since 2015, Changik has been working as a freelance dancer in Germany and has collaborated with Stephanie Thiersch, Maura Morales, and the Tchekpo Dance Company. Oh Changik has created own award-winning pieces, which were presented at festivals in South Korea. Since 2016, he has collaborated regularly with steptext dance project and choreographer Helge Letonja.