The sage Meng Ziyun said, "After seven years of illness, you should seek love for three years", which means that if a person has insufficient yang and suffers from illness all the year round, the best way is to smoke and burn with wormwood, so that he can get rid of the disease alive.

Wormwood is revered as the king of hundred herbs. Moxibustion has a history of thousands of years.

Traditional Chinese medicine believes that moxibustion has the effects of dredging meridians, promoting qi and blood circulation, expelling wind and cold, removing blood stasis and relieving pain.

Health experts believe that Folium Artemisiae Argyi belongs to pure yang, which has the effects of strengthening yang, tonifying Yang Qi, improving immunity and strengthening body. Huangdi Neijing, a classic of traditional Chinese medicine, records that the yang of the human body is like the sun in the sky. Without the warmth of the sun, everything on the earth would die. If a person loses his yang, he will lose his life or die young.

"Inner Diameter" also says: the sun of the human body is like the sun of the day, the sun of thirty is like the morning sun, the sun of forty is like the sun just after noon, and the sun of fifty or sixty is like the sun at dusk. Therefore, people over 30 must support yang, and over 40 can ensure full physical strength and good health. Moxibustion, a method of smoking and roasting with moxa fire, is the oldest health care conditioning method, which has been valued by doctors and favored by health care experts since ancient times.

Dou Cai, an expert in moxibustion in Song Dynasty, said: Yang is the foundation of human beings, and the strength of Yang is related to human health. The existence of yang determines the length of life. The best way to tonify yang is moxibustion.