I have seen my fair share of larger ladies in China, but not all of them are big by any stretch. Having said that, most lao wai ladies are larger than their Chinese counterparts, even the 'thin' ones.

Mic, where are you from? You don't write like a westerner if you will forgive me.

"But, the one thing I notice most about the lao wai people, is that they seem to dislike each other. Have you ever noticed a lao wai girl, she won't smile to you, they walk by with a serious look on their faces, while in England or USA, they wouldn't hesitate to give a friendly glance"

In most cities in China a westerner will say hello to another westerner, if only because there are so few of us around! Certainly not the case back in the west. In some bigger cities with more Lai wai this doesn't happen, but that is because it doesn't happen in the west either! Chinese don't go around greeting total strangers on the street do they? The same for us.