Yun Mu Kwan (Hangul: 연무관, Hanja: 研武館, eng.Hall or Institute for Martial Study) was one of the original five "kwans" that arose in Korea following World War II. It was the name of the place where a generic form of Japanese karate (Shotokan) was being taught by a number of Korean students who had studied in Japan and returned to Korea in the first half of the twentieth century, bringing the Japanese art with them. Yun Mu Kwan, as a style, would eventually be renamed Jidokwan by various former students and would become one of the core styles that contributed to the development of what is today known as Taekwondo.