4th Dan Yang Pyun required hyung performed by Kwan Jang Nim HC Hwang with explaination of the moves of Yang Pyun. Videography and editing by Master Jack Helfgott.
Event: 1ST MOO DUK KWAN® USA VIRTUAL COMPETITION REGISTRATION
Competitor: Doug Countryman
Division: Prerecorded (Hyung)
Hyung: Yuk Ro Sa Dan - Yang Pyun