"While the sex ratio distortion in China is a long-standing demo-graphic pattern, fertility policies instituted to slow population growth have exacerbated the female deficit. Under the One Child Policy, parents in China who exceed their fertility limit are forced to pay a fine and are subject to a variety of other monetary punishments, including the seizure of property and forced dismissal from government employment."
January 1, 1970
https://en.wikiquote.org/wiki/One-child_policy