Last month, a State Department official testified before a Senate committee that Chinese authorities have “indefinitely detained at least 800,000 and possibly more than 2 million Uighurs, ethnic Khazaks and other members of Muslim minorities in internment camps” since April 2017. What foreign reporting has been possible in Xinjiang — which Beijing has subjected to a draconian lockdown — has revealed a vast network of “reeducation centers,” barbed-wire-ringed compounds and factories that have housed possibly more than a tenth of the region’s population of Uighurs, a Turkic Muslim minority.
https://www.washingtonpost.com/world/2019/01/09/cone-silence-around-chinas-muslim-gulags/