Beijing 2008 - Eight Don't Ask

OK, here is the "Eight Don't Ask" guide for local Chinese on what not to ask foreigners.
1. income and expenses
2. age
3. love and marriage
4. health
5. family and home address
6. personal experiences
7. religion and political views
8. "what people busy with" (I translated this as jobs, hobbies, where they will go after this, etc.)

I am pretty sure these Chinese people will be dumbstruck seeing such a poster. Why can't we ask such questions to people from countries famous for "freedom of speech"??? We just want to friendly and mean no harm, OK? We thought they can talk about "anything"??? Hahaha!!! Of course, I know the difference between freedom of speech and privacy. But to the Chinese people, this is pretty much a grey area. Anyway, why the Chinese government wants to try so hard on this kind of thing? I thought there is an English saying that sounds, "when you are in Rome, do as the Romans do". One word, the Chinese laobaixing (commoners) will be "baffled"!!! WTF!?