Kim Yoon-Sang (Hangul: 김윤상; born in 1934 ) was one of the senior most students of founder of hapkido Choi Yong-Sool (Hangul: 최용술) from the hapkido founder’s latter years. He is the notable Korean martial artist as the founder of Hapki yusul (Hangul: 합기 유술).
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