I said "could do". I am simply refuting the OP's logic on number as if 15M is insignificant.
I understand why you are saying what you said. You don't have the same historical knowledge as Chinese do. In 1944, while the whole China was still fighting with Japanese, Uyghurs started a insurgence war with the help of Soviet in XinJiang and did what we would call ethnic cleansing today. They specifically targeted Han Chinese, killing them indiscriminately. All in the name of East Turkestan, which they proclaimed on the day of Nov. 12, 1944. As a Chinese who grew up in XinJiang, I know what they would do when they get another chance. So, don't tell me they had no dog fight with China.