> There is way less women than men because the Government let people basically kill girls with selective abortion or after being born.

There is no possible benefit imaginable for any government to encourage the killing of girls. This just doesn't make sense from a Collectivist perspective.

I believe that China actually had strong laws that forbid doctors from telling pregnant women which sex their child would have because many Chinese in rural areas would abort female children on their own accord.

This was basically because of the one child policy and the fact that Chinese men are supposed to take care of their parents when they get old. So it was more of a result of really bad government policy and self interest of families.

But from what I know the one child policy has officially ended in China, so I don't think this will be a big issue in the future.