Li Qingyuan (also known as Li Qingyun) is the oldest person in modern China. He was born in the 16th year of Qing Emperor Kangxi (A.D. 1677) and died in the 22nd year of the Republic of China (A.D. 1933) at the age of 256.

/kloc-at the age of 0/00, he was awarded a special prize by the government for his outstanding achievements in traditional Chinese medicine. At the age of 200, he still often gave lectures in various places, during which he received many visits from western scholars.

1933 Li Qingyuan, who lived for 256 years, died. He has 24 wives and 180 descendants. He is one of the rare longevity stars in the world for 256 years, but there is no reliable data to prove the authenticity of his life.

He thinks there are three reasons for his health and longevity: first, he has been a vegetarian for a long time; Second, keep your heart calm and cheerful; Three, long-term use of black beans, purslane, celery, honeysuckle, hawthorn, green tea, seaweed, chrysanthemum and so on. It is named "Bai Cao Chang Sheng Fang" to maintain the three links of human blood, urine and stool. This is the secret of Li Qingyuan's longevity for future generations.

He always believes that maintaining a calm and peaceful mentality and "three links" are necessary conditions for longevity. Keep a calm mind, sit like a turtle, walk like a bird and sleep like a dog. "This is Li Qingyuan's secret guide to longevity for future generations. His diet is mainly rice and a little wine.

The health care and medicinal use of tea are recorded in Shennong Herbal Classic and Compendium of Materia Medica, but the specific origin of Huazhi tea is unknown, and the historical records should come from Hubei. "Compendium of Materia Medica" records that cassia seed has the effects of clearing heat, purging fire and improving eyesight; Lotus leaf has anti-inflammatory and diuretic effects; Siraitia grosvenorii has the effects of relaxing bowels, clearing throat and moistening lung.