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The realm achieved through the process of self-knowledge, self-analysis, self-education and self-improvement in one's heart mainly includes 20 words, namely, benevolence, courtesy, wisdom, faith, softness, courtesy, frugality, loyalty, filial piety, sincerity, diligence and courage.

Personal cultivation, as an invisible force, restricts our behavior. Anyone with good personal cultivation will be respected by people. Of course, the content of personal cultivation is not static, and it will become more colorful with the development of society and the deepening of life practice. The discussion and research on personal cultivation began from a very early age. The ancients once put forward "self-cultivation", and now our country also takes teenagers' ideological morality and personal accomplishment as compulsory courses for students.