China forces everyone to use it.

Oversimplified. One-child policy. I have an adopted Chinese daughter, I went to China for the adoption in 2002, and I talked about the policy with Chinese working for the adoption agency.

"Artificial birth control" is one method by which Chinese might avoid unwanted children, but if anyone is forced to use it, that's not official by the government. However, there were isolated, unofficial actions taken by local officials, sometimes, cases of forced abortion.

See also Two-child policy.

Normal enforcement of the policy is through fines on excess children, the definition of excess varies by region, ethnic group, and, sometimes, the sex of already-born children. The most stringent requirements are on the Han majority

The situation is much more complex than most in the West might imagine..