That's so-called privacy. I rather prefer to have a wall for privacy. That wall would make everybody's life easier and more straightforward.
If you think for a moment, you would realize there is strong shield for the Western's life and house even there is no high wall around their houses. You cannot trespass their property even there is no wall. There is a clear rule of privacy and protection even there is no wall. If you happen to trespass their property, they would treat you with bullets no matter what. Of course, you could go out with your collegage after work for happy hours, but you rarely hear people talking about personal affairs. That's privacy!
On the other hand, Chinese peopel like to mix things up. You may have high wall and heavy door, but people still can invade your privacy or talk about your privacy. The police can knock your door anytime just to check on you randomly. I don't prefer those mess-up.
Anyway, I have a diffierent viewppoint from yours.
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