Ming Dynasty Scalpel: Cutting Zhang Juzheng's Hemorrhoids at the Beginning

Traveling through the Ming Dynasty overnight, the first thing you did was to treat Zhang Juzheng's hemorrhoids? He Xuan, an ordinary surgeon, returned to an era when modern medicine had not yet begun to develop and the secrets of the microscopic world of the human body had not yet been revealed. Penicillin, laparotomy, modern hospitals, He Xuan used his professional skills to try to change the world. However, for one person's disease, the root of the disease can be cut off with a knife. The world is suffering from diseases, what should be used to remove the root of the disease?