Kim Yoon-Sang Martial artist
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).