91.59 percent of China's population are Han Chinese, and although the 55 officially recognized national minorities to the Han majority have some privileges, the Government of the People's Republic of China criticized from many sides, especially the Muslim minority to oppress. One of the hot spots is East Turkestan Xinjiang, which is home to the Muslim Uyghur and Kazak is. Ever since the conquest by imperial China, there is a strong Chinese immigration into Xinjiang, in order to preserve the East China overpopulated areas to provide relief and other natural resources to develop Xinjiang. Even the nuclear test site of the Chinese military is in the sparsely populated region, making it among the indigenous population came to radiation damage.