When Xu Chu read Mencius, he was in the stage of criticizing Confucius and Mencius during the Cultural Revolution. At that time, he graduated from high school and waited at home to jump the queue, and he remembered the famous saying "Heaven is great". After jumping the queue to go to the countryside, Xu quickly adapted to rough work such as cutting wheat, transplanting rice, accumulating fertilizer, weeding and raising pigs. When processing pig feed, several blades flying out of the machine almost killed Xu! In the countryside, he also started as a "barefoot doctor" with a little medical knowledge learned in middle school, and volunteered to treat some minor illnesses for farmers.