Too many men and not enough women. Not enough to pick up on the population growth after one generation of people being wiped out. They're seeing this as a problem for the future due to forced sterilization, abortions, and child slavery. Though politicians are trying to control population in other parts of the world, especially in the EU and USA through means of scaring people by forcing a sham pandemic, climate change, and other political bs, China is still seeing that it will take more to curb the population growth in the Western world.