It is the father's fault that his son doesn't teach. If you don't marry from your father, you marry from your husband, and your husband dies from your son. Men are superior to women. Once a teacher, always a father. Erase personality. Harmful thoughts. Destroy mankind. The meaning of filial piety. Since ancient times, loyalty and filial piety can't be satisfactory. Turn the people into puppets of feudal rulers. Imprisoning thoughts. Man-eating feudal tutor.