Zhou Dunyi's theory of five natures of sex, honesty and spirituality and several categories constitute his ethical theory, which establishes the moral and ethical thought of "the extreme of establishing a person", that is, the high standard of being a person, and the person who meets this high standard is a "saint". Its content is Chinese, righteousness, benevolence and righteousness, and its methods are "no desire", "main quietness" and "active and good reform" These thoughts have opened the door for Neo-Confucianism to pay attention to morality and ethics, which has far-reaching influence.