Also Tibetans aren't the majority in Shanghai, just Tibet - Like native Americans on current reservations, which continued to shrink in size for a long time.
Yeah, the chinese government is looking for a way to get rid of the Tibetans. The Americans have done well in ensuring the native population has lost power and are shrinking. The end goal of china is to be rid of their Tibetan scourge, just like the Americans would like it if the natives stopped existing