There are many ways to preserve one's health in TCM, such as Chinese medicine, acupuncture, massage, scrapping,,,,,. The purpose is to expel pathogenic gas. When the internal qi is cultivated to a certain skill, through the application of skills, the sick qi in the body can be discharged from the body by itself.

The essence of acupuncture treatment lies in dredging meridians. Acupuncture can cure diseases because doctors use their own vital qi to mobilize patients' vital qi. When patients' vital qi is enhanced, they have the power to expel sick qi. Some methods of internal qi cultivation are that luck runs along the route of meridians, and luck can also drive away evil spirits. Therefore, keeping in good health in traditional Chinese medicine and practicing internal qi have the same effect of eliminating evil spirits.