China's ancient thoughts attached great importance to personal moral cultivation and pursued the realm of a gentleman in life. Body and mind are integrated, and "self-cultivation" means cultivating the mind, enriching and cultivating the mind with profound morality, and achieving the foundation of personal foothold in the world. Zhouyi holds that if virtue is thin and respected, it will be dangerous, which is the important significance of virtue to individual existence and development. Universities emphasize self-cultivation, keeping the family in order, governing the country and leveling the world. Self-cultivation is not only an important starting point, but also an indispensable factor throughout the whole life process. A gentleman is strict with himself and lenient with others. It is important to expand the brilliance of human nature with a sacred sense of mission and a spirit of self-responsibility.