"Taking pleasure as service" is an important principle of spiritual health preservation put forward in Huangdi Neijing. Tian, Jing also; Happiness means happiness, optimism and cheerfulness; Services, tasks. "Serving happiness" means that people must take spiritual optimism as their responsibility. Work, satisfaction

Secondly, there are people called saints, who can live in the natural normal environment of heaven and earth, abide by the law of eight winds, make their appetite correspond to the secular society, have no anger and resentment, do not leave the universal norms of the secular world, wear clothes decorated with ordinary patterns, and do not show off their behavior in the secular world. Outside, he is not physically exhausted by things, including, without any ideological burden, with quiet and happy as the purpose and carefree as the satisfaction.