As with Tibet and other areas of modern-day China (the state), East Turkistan was occupied by the Chinese communists under Mao Zedong. The Chinese have moved Han settlers into the region (as in Tibet) and are busy constructing monuments to support a fictional history of Han domination (official Chinese historiography), in order to strengthen Han roots in the occupied regions. This documentary is an interesting look inside East Turkistan, home of several Turkic Muslim groups, including the Uyghurs. There is an error in it: the signs are not "in Arabic" as the reporter claims; they are in Uyghur, a Turkic language which uses Perso-Arabic script. The grammar is quite Turkic in form.