Totally agree. When I lived their in 2005/06, I spent a bunch of time traveling and when I went to Xinjiang, I can only describe what I saw as an occupied country with a thin veneer of unification. Xinjiang has nothing to do with Eastern china. I've heard that Tibet is the same. By land mass, these two areas along constitute a huge portion of China. There have been many migrations into their two provinces by Easterners, who are mostly Han Chinese. Personally, I would describe what's happening in Xiajiang and Tibet as "ethnic cleansing by dilution".