China ended its strict one-child policy -- imposed in the 1980s owing to fears of overpopulation -- in 2016 and began allowing couples to have three children in 2021.

Source: https://timesofmalta.com/articles/view/chinas-population-shrinks-first-time-60-years.1007667

In July 2022, a local public health bureau in Guangxi admitted its practice of forcefully taking children away from their parents in the late 1990s to enforce the one-child policy.

Source: https://thediplomat.com/2023/01/human-mines-chinas-population-policy-flip-flops-spark-anger/

Men outnumbered women by 722.06 million to 689.69 million, a gender imbalance that was exacerbated by the one-child policy.

Source: https://www.independent.co.uk/asia/china/china-population-birth-rate-beijing-b2263512.html

Men outnumbered women by 722.06 million to 689.69 million, a result of the strict one-child policy that only officially ended in 2016 and a traditional preference for male offspring to carry on the family name.

Source: https://www.ardrossanherald.com/news/national/23255287.china-records-first-population-decline-decades/?ref=rss

Much of the demographic downturn is the result of the one-child policy as well as high education costs that have put many people off having more than one child or having any at all.

Source: https://gazette.com/news/us-world/in-aging-china-a-call-for-bold-steps-to-cut-cost-of-having-babies/article_b5efcce0-63f2-5763-b770-36028fdf61a4.html

The culprit was the Communists’ eagerness for social engineering with their “one-child policy.”

Source: https://pjmedia.com/news-and-politics/rick-moran/2023/01/17/demographic-crisis-looms-in-china-with-first-drop-in-population-in-six-decades-n1662449

The film is set in a dystopian society where a strict one-child per family policy is enforced, and the Settman family must hide their septuplets to avoid prosecution.

Source: https://collider.com/what-happened-to-monday-ending-explained/