The One Child policy officially restricts married, urban couples to having only one child, says Wikipedia, while allowing exemptions for several cases, including rural couples, ethnic minorities, and parents without any siblings themselves.[2]
A spokesperson of the Committee on the One-Child Policy has said that approximately 35.9% of China's population is currently subject to the one-child restriction.
This policy, introduced in 1979, was created by the Chinese government to alleviate social, economic, and environmental problems in China.
Authorities claim that the policy has prevented between 250 and 300 million births from its implementation until 2000,[2] and 400 million births from 1979 to 2011.[5]
The policy is controversial both within and outside China because of the manner in which the policy has been implemented, and because of concerns about negative social consequences.