such as?
do you mean that there are now far too many men in China due to selective breeding type arrangements?
Many people have heard of the one-child policy in China, but it's not quite as clear cut as many assume. Let me give a brief overview of the law.
Currently, most families are limited to one child, but there are many exceptions too. Rural families are allowed to have a second and even third child, if their first and/or second child is a girl. But if the 3rd child is also a girl, that's the limit. This is rooted in a tradition favoring male children. I don't really get it, but hey, that's how it goes out here. Ethnic minorities in China are also permitted to have 2 children. Finally, a new amendment is that if 2 people who are both from a one-child family want to have a baby, they can actually have 2 children, but both parents MUST be an only-child. Punishment for breaking the one-child law is usually a hefty fine ranging from a fixed rate of about 60,000RMB, to more ridiculous 2/3 of your annual income whatever that might be.
I mentioned how China is feeling the "sting" of this policy, and some have asked what exactly. The social issues created by this law are many, and rather complex, but I will try to nnmartin the situation and make it really over-simplified
1) The law has created an entire generation of pampered, spoiled little emperor children. The chinese refer to the first generation of one-child policy babies as "born after 1980", and when you meet them you can SEE the difference. Obviously not all of them are bad, but an alarmingly high proportion of these people, now in their 20s, are self-centered, difficult and maladjusted people. They have no idea how to deal with people saying "no" to them, and have no concept of working for something bigger than themselves. As far as they are concerned, they are the center of the universe.
2) More seriously, the burden on the child as they grow up is tremendous. The one-child policy creates a phenomenon known as 4-2-1. You have 4 grandparents on top, supported by just two people underneath, and then EVERYONE eventually is supported by the ONE child at the bottom. In China's economy this can be crippling.
3) Rapid premature "aging population". An "aging population" is usually a feature of a developed country. Healthcare improves and people live longer, creating a larger older generation dependent on pensions and welfare etc. Usually by the time the nation has evolved to that point, it has the wherewithal to deal with it. China's one-child policy has created a population with far too many old people and not enough young people to support the system. And it has all happened in just 20 years or so. The financial burden on the Chinese state is quite frightening.
4) Infanticide - as I said, there is a traditional preference for male children. A one-child policy in China has led to tens of thousands of baby girls being murdered at birth, or simply abandoned. I've visited orphanages in Northern China, they're not so nice. And about 80-90% of the kids there are girls.
5) This issue has also created another problem linked to the one-child policy - massive gender imbalance. Nnmartin mentioned there being "too many men" - ABSOLUTELY RIGHT. There is a totally shocking imbalance in gender in China which is creating potentially catastrophic unrest. Currently, the ratio between female to male stands at 100:120, so for every 100 women, there are 120 men. Take that into a population of 1.4 billion and you've got serious issues. If you're gay, like me, this is great news. There are plenty of men to go around in China! But seriously, I read in the paper here about a city in Hebei Province where there were 1.3 million men and only 650,000 women. And now in many big cities where girls have a penchant for foreign men, you can see how tensions might rise.
These are some of the main issues that a one-child policy can bring to a nation. China was brave to implement this policy, and despite the backlash, I applaud them in many ways. They saw a need to curb an out-of-control population growth, and had the guts to do it. But now they have to live with the consequences. It was quite typical of the Chinese to resort to such extreme measures without really thinking through the long-term ramifications. That's basically how it works in China, haha.