Zheng qi (healthy qi), a term in traditional Chinese medicine, is the opposite of evil qi. It refers to the immunity of the human body. Pathogeny in traditional Chinese medicine emphasizes the function of zheng qi. When it is full, evil qi will not be able to intrude.

1. Labor does not make him too exhausted. Zheng qi is in a harmonious state.
2. You love what you eat and wear informal clothes. Satisfied with the social customs, you do not envy people in higher positions. Everyone is honest.
3. Unhealthy habits will not distract him and heresy will not carry him away.
4. No matter whether he is stupid, clever, pious or, unfilial, he is afraid of nothing.
5. They all follow the ways of preserving health, so they can live to a hundred years without showing any sign of aging in their movements.
Learn more about the theory of Chinese medicine, please read Physiological Functions of Qi.