According to the Guinness Book of World Records, the longest-lived person is Li Qingyuan, a health care worker of China Longevity Qigong. Born in the 18th year of Qing Emperor Kangxi, he died in the 24th year of the Republic of China (1679- 1935) at the age of 256. Li Qingyuan was born in Yunnan, and settled in Kaixian County, Sichuan in his 90s, until his death. After the death of the old man, some newspapers in Beijing reported on the topic of "the longest-lived person on earth", but it was doubted and denied by Guinness World Records at that time, and was later confirmed by many textual researches. According to the statistics in 2000, there were 1 10,000 centenarians in China, and 1.996 in Gonglaifa, China. Li Qinglian, a medicine farmer in Qingchengshan, Sichuan, died at the age of 154. Iranian old woman Mohsen, 1997 16 1 year old; There was a man named Manping in Japan who lived for 242 years, his wife was 22 1 year-old, his son 196, his daughter-in-law 193, his grandson 15 1 year-old, and his daughter-in-law 138. Li Qingyuan, a scholar of traditional Chinese medicine in China, died at the age of 256 at 1933. The above proves that people who live to 100 or even 200 years old have made undeniable achievements. According to Xinmin Evening News, according to historical records, the oldest person in the world is Bk Frem Kahn of Britain, who lived for 209 years and experienced 12 dynasties (but strangely, it is not recorded in the Guinness Book of World Records published in Britain, the author's note). How long is the average life expectancy of ordinary people? Scientists believe that it can be measured by the following methods: first, according to the age of sexual maturity, it is 14- 15 years old, that is, 140- 150 years old; Second, according to the growth age, it is seven times that of 20- 25 years old, that is, 140- 175 years old; Third, according to the number of cell divisions, it is 50 times the average cycle of each cell division of 2.4 years, that is, 120 years old. More experts prefer the third algorithm. 1994 At the seminar on "Molecular View of Aging" held in Berlin, Germany in February, when answering the question "How long is the life span of people", the answers of more than 40 life scientists attending the conference were: 1 10 years old.