In case anyone is curious, one of the largest numbers claimed by Adrian Zenz is "1.8 million" in the following article: https://foreignpolicy.com/2020/07/01/china-documents-uighur-...

> Since 2017, up to 1.8 million Uighurs, Kazaks, and other Turkic minority groups in the northwestern Chinese region of Xinjiang have been swept up in what is probably the largest incarceration of an ethnoreligious minority since the Holocaust.