In 2019, Yi claimed that China's population had already started declining with a total fertility rate (TFR) of only 1.1, when the official projections were still at 1.8. Furthermore, Yi has estimated that China's population is only 1.28 billion, instead of the 1.41 billion the government claims.[5][6]
References
^"Yi, Fu-Xian". Endocrinology and Reproductive Physiology Program. University of Wisconsin – Madison. 9 January 2018. Retrieved 10 July 2022.