Policy deciding the fate of China

Today in humanities we discussed the poilicy of china. It seemed that after the baby boom generation there was a explosion in the population, the population grew so high that china ran low on resourses, china was at ease. Then after a couple of years the policy made a rule that a couple couldnt have more then one child. If a couple broke the law it would come to serious consequenses, and also sons were favored more then daughters, if a daughter was given birth, the parents had the choice to get another kid and hope it was a boy. I think that it is really unfair what they did with the girls. But today in china there are over 30 million men known as "bare branch". But also it was kina good what the policy did to get the population down but the daughter thing was really not fair.