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GongKwon Yusul
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Gongkwon Yusul is a modern Korean martial art system founded by Kang Jun in 1996. Its main influences include Hapkido, Hakkō-ryū Jūjutsu, Judo, Kumdo, Taekkyon, Taekwondo, Teukgong Moosool, Kickboxing, and Kyeok Too Ki. Currently, this martial art exists in the form of an amateur-level combat sport.