Choi, Yong Sul > Hwang, Jong Yeon > Hall, John P. > Me. I do not know much about Hwang, Jong Yeon. I remember seeing his name as a student of Choi, Yong Sul in a magazine oabout the history of Hapkido many years ago. I have a certificate issued by The Korea Hapkido Yeon Mu Kwan. Does anyone know anything about Jong Yeon Hwang, or his organization?