China has a population of 1.5 billion and a family policy of 1 child per family in other words a policy that would reduce the population, 36 % of the population are subject to this one child policy apparently, there are exceptions.
From memory they only had just over a billion when I was growing up 30 odd years ago, so it ain't worked very well.
Life is cheap in China, life is also cheap in the Philippines, harsh penalties deplete the surplus population to paraphrase a very famous British writer.