Tu Jin Sheng (Iron Crotch Qigong) and others. At a builder's merchants in Cardiff, Chris invites six strong men to push him over. Needless to say, they don't succeed. Extraordinary martial arts secrets are exposed for the first time, from deadly shouting to a van pulled by a penis. In Hong Kong we show what happens when a sledgehammer cracks bricks on a man’s head and in Taiwan a trained hand crushes a steel pipe.