The chapter opens with a description of the yin child technique, in which the internal energy of the body is reversed and the body's tendons and veins are broken and reattached. The grandfather explains that practicing the technique is like being tortured. He tells the child that he must become the strongest person he can be. People who practice chivalry take the righteousness of chivalrity for their own sake. He says that people who suffer are stronger than those who do not.