To cultivate one's nature and life is to cultivate one's mind and life. To cultivate temperament and refine life, it is important to cultivate one's mind, cultivate one's mind and settle one's mind. The so-called cultivation means protecting the spirit (protecting the spirit means maintaining the mind), being at ease all over, not entangled in feelings for love and hate, not paying attention to worries and joys, and being indifferent and peaceful.

Tao Te Ching said: "Five colors are blind, five tones are deaf, five flavors are refreshing, and wild hunters are crazy." Taoist health theory holds that excessive psychological emotion will lead to dysfunction of nervous system and imbalance of yin and yang in the body, which will lead to many diseases, premature senility and even short life. Abnormal changes in emotional activities will directly affect the internal organs of the human body and produce a variety of diseases.

Taoist life science, the foundation of health preservation, pays attention to the combination of static and dynamic, work and rest, reinforcing and reducing, and the integration of body and mind. And think that secular desires are natural conditions, and the twelve odd and more than twelve mentioned above are also very important for health preservation, so it is neither too much nor too little, so it is too much.

The method of health preservation should be practiced in different ways according to the actual situation, because of people, time, illness and place.