By the 1960s, there were nine major kwans, which were based on an original five: the Chung Do Kwan (Won Kuk Lee), Moo Duk Kwan (Hwang Kee), Song Moo Kwan (Ro Byung Jick), Chang Moo Kwan (Yoon Byung-In) and Jidokwan (Chun Sang Sup).