Baji Quan involves stretching out. The concept relies on applying one's head, shoulder, elbow, hand, bottom, crotch, knee and foot at once. It is manifested by "knocking the heaven down with a shoulder-shaking" strike, which extends one's full potential to the eight extremities. That's the origin of Baji – the eight extremities.

An Jianqiu was born into a wushu family, so he has been practicing Baji Quan with his father since he was a child. "A man who practices Baji Quan has a body just like a ball. When you hit his body, it bounces back towards you at any position," An said.