In 2050. According to CCTV financial report, the third China Forum on Population and Development was held in Beijing on February 1 1 2023. The Population and Development Research Center of China released the Follow-up Survey on the Influencing Factors of Health and Family Happiness of the Elderly in China. He Dan, director of the center, said: "The forecast of the China Population and Development Research Center shows that by 2050, the number of elderly people over 80 in China will quadruple, which means that China has now entered a long-lived era. The Secret of Longevity is a book published by Shanxi Publishing Group and Shanxi Science and Technology Press on 2011.