[0:00]This is a very special martial artist. This guy has an arm that can be detached and rotated 360 degrees like a bamboo dragonfly.
[0:06]His phenomenon is called a false joint. When two broken bone ends cannot heal together, they create a gap like a new joint.
[0:13]Both arms seem to function normally. He still performs boxing moves or does pull-ups easily.
[0:18]Sometimes that arm creates a surprise attack during a fight that knocks the opponent to the floor.
