Sorry for off-topic, this branch is gone out of hand.
OK, No, instead, I'm teaching you how to preform an argument so other people can understand you well, rather than get yourself a brunch of down votes and nobody believes what you said.
It's very clear to me, most Chinese people didn't receive any proper training on how to make an argument that could yield good results. Everybody in the end is just ranting to each other without generating or putting out valuable information.
Unfortunately, you are among those who don't know how. For example, from your comment I quote:
> I assume you are a typical so-called westerner.
> Serpentza? I watched most of his videos, and found he is just a hypocritical racist ... he never communicate with the locals, and just live in his own circles ...
First of all, I consider myself Rational. You're welcome if you treat it as a synonym of 'westerner', I don't put it that way, however.
Secondly, be careful when you want make this kind of assumptions, because it's actually quite easy to be proved wrong.
For example, I could ask you what you mean by 'westerner', then you may answer "Chinese people who favors west ideology", then I can either say "No, I just rational" like what I just did to save my time, or, if I want to hook you up, I could just let you explain "What is west ideology?", after that, I can just simply put out a question "Can you point out any of my words up there which gives you that impression?" while knowing you can't.
About that video host, I don't think you knew hes personal life out of the camera do you? So how do you prove "he never communicate with the locals"? Especially when hes wife is a local Chinese.
I'm not ensuring you hes 100% correct, in fact some part of it is not. However, that video is good enough for people who interested on the topic, a informative watch for them.
To preform an good argument, one fundamental rule you need to know is it's required for you to show your respect, by correctly understanding what's your opponent is saying and their reason, and by putting out your reason of why your opponent were wrong if they did.
A high quality comprehensive comment will bring you likes, bad one will give you down votes. If you in a hurry, don't post anything until you have time to do so. Because you need time to research the problem.
And the reason of why there are a population limit, is not because what you said:
> Some stupid officers can make all kinds of ridiculous policies, sometimes the basic reason is just to consolidate their regime
You need to have some basic understanding on politics and history to provide a reasonable answer, don't assume our government are just made of a brunch of idiots, this will not make you look better.
In my point of view, the reason of limiting the population of those tier 1 cities is complex, simply put:
1, The government needs to found a way to limit how many resources (both nature and welfare) a single city can consume. Because of a lots of reason (geo location for example), the city cannot hold too many people. (Shanghai for example, relies heavily on piped and shipped natural gas[0], which is expensive and not a long-term solution)
2, Many cities in China is not well designed. When it needs to handle huge amount of population, problems (Pollution, traffic jam, security problem etc) will occur.
3, Tier 1 cities are sucking resources (Intelligent people, welfare, infrastructure etc) from other cities, makes them harder to grow.
However, I skeptical about such hard limit will hold, because it's too hard to implement (What? they want to install doors for every city?), and you just can't stop people from seeking better life. We'll see how it goes.
[0] http://www.chinadaily.com.cn/english/doc/2005-12/29/content_...