[mmooss]

> I live in Shenzhen, where there are people from all over China, and everyone is not much different from each other, nor does anyone care where someone comes from.

That seems usually true in densely populated areas that attract people from all over; e.g., most people in NY or LA don't care where you're from; it doesn't even register as something to question.

It's the people in the less dense areas that object (to people they've seldom encountered). They are the ones that much more often object to immigrants or certain ethnic groups. People from less dense areas are the ones who want 'crackdowns' on urban crime - that is, in a community they don't live in. People in the cities vote for liberals overwhelmingly.