Choi Hong Hi
Shortly after the Korean War and in 1953, four more offshoot schools formed. These second-generation kwans and their principal founders were Choi Hong Hi and Nam Tae Hi's "Oh Do Kwan", Lee Kyo Yoon's "Han Moo Kwan", Park Chul Hee and Hong Jong Pyo's "Kang Duk Won", and Lee Young Woo's "Jung Do Kwan".