According to the Chinese national territorial autonomous law, the local population who exercise an autonomous region shouldn't be lower than other migrant populations, but in fact now, because of the mass population transfer in recent years, or since 1949, the Uighurs have become the minority and their rights are affected in many fields.
In 1949, the Chinese population was about 2% to 3% in the region. Now it is more than 50%. The main goal of the Chinese government is to achieve the assimilation process of Uighurs by transferring large numbers of the Chinese population to the area.