"Peer pressure and an extensive propaganda campaign were aimed at persuading Chinese people to embrace the ideal of a one-child family. Most Chinese did not own a television, and cell phones and the Internet did not exist during the policy’s first two decades, so the government made use of public spaces to display slogans and images depicting happy, healthy, and prosperous one-child families."
January 1, 1970
https://en.wikiquote.org/wiki/One-child_policy