(1) "中国统计局11月中公布的《中国统计年鉴2021》显示，2020年全国人口出生率为8.52%，创下自1978年来新低。全国人口自然增长率为1.45%，同样是1978年以来历史新低。" 高锋 (reporter), 中国出生率跌至43年来最低 人口负增长迫在眉睫. VOA Chinese, Nov 26, 2021.
(2) official titles (in Chinese and English) 中国统计年鉴-2021 China Statistical Yearbook-2021 (发布时间：2021-10-09),
compiled by 国家统计局 National Bureau of Statistics of China and published by 中国统计出版社有限公司 China Statistics Press.
(3) However, northrate (also written as "birth rate" in English is always expressed as "is the total number of live births per 1,000 population" (usually in a year).
I double-check, English-language news reports from both China and US says the birthrate was "8.52" per 1,000 Chinese (not just Chinese females).
(4) China, welcome to low birth-rate clubs of the world, whose memberships include Taiwan. See
birth rate https://en.wikipedia.org/wiki/Birth_rate
(Births per 1,000 population (2017): purple 6-10:: (Hong Kong, Macau, Singapore not shown) Japan, South Korea, Taiwan; Bahrain (in the Red Sea); Europe (excluding those in the periphery: France, United Kingdom, The Netherlands, Belgium, Luxemberg, Denmark, Norway, Sweden, Finland, Estonia, Russia, Belarus, Ukraine, Moldova, Albania and North Macedonia) ).
It (birthrate 6-10) is an intractable problem, which allows no escape so far.