Gender imbalance is in the normal human distribution... Only countries where there's more females is because of men migrating out and/or died off in past generations. In absolute terms, there will be a fair bit of gender imbalance, but the same applies to the whole west as well. The ratio of like 102-105:100 men to women which is present for the young adult ages in China is what it's supposed to look like in a stable society without too much ex/immigration.
If it is a worry that someone is left over, moving and settling in another country is always an option. This too is good, because it increases the spread of Chinese people.
China should across the board reform immigration though. But these ideas about passing random religious or animal laws are insane. We already have a good thing going and should not fix what isn't broken, just open up the country to make it more accessible. We're not appealing to the red necked, forced birth practicing, scantly toothed and even more poorly educated anglo conservative hordes. China should let in well read and/or hardworking people.
To grow into it's best shape, China needs to become a truly international country, like how the Imperium of the past encompassed all of their known world and assimilated all the different peoples of Asia. Today, that means reaching all across the world, especially the middle east, the CIS, Africa and South America, where exchanges are growing but still scant.
Besides loosening controls, it's time to advertise more as well. But mostly loosening controls will make it attractive due to economic reasons.
