Where are the adherents of the Western Regions in the Tang Dynasty?

Central Asia.

after the fall of Longxi, the Tang dynasty alone in the western regions has been trying to support it. Thanks to the international situation in the western regions, the local area far away from Chang 'an was temporarily calm. The Arab Abbas dynasty in the west had no intention of going eastward and crossing the green ridge after the Battle of Neros. After the death of Sulu, the sudden riding in the north suffered from the continuous infighting of Huang and Black surnames.

To replace the Uighurs in East Turkistan, this fashion is far away in Mobei, but it has not touched the western regions. In addition, the priority strategy of Tubo was Hexi area in Tang Dynasty, so the western regions were temporarily isolated from the storm.

Extended information:

In the Han Dynasty, the indigenous people in the thirty-six western regions were mainly composed of ethnic groups who spoke Indo-European languages such as Tohoku and Serbian (Sketai). The first three popular languages in the Western Regions-Chinese, Bolu and Boluo Mysteries-are all foreign languages for people in the Western Regions. If writing is regarded as the symbol of civilized society, then the civilization of the western regions came into being no earlier than the 4th century.

in 84 ad, Uighurs-Uighurs moved westward from the Mongolian plateau to central Asia, and established Gaochang Uighur kingdom in Turpan and other places. The Uighurs originally used Turkic-Runi, and after arriving in Turpan, they gradually changed to Central Asian Sogdian to spell their own national language, and created Uighur in the 9th century. The Uighur language has a great influence on the northern nationalities in China. The Mongolian language comes from the Uighur language, and the Manchu language comes from the Mongolian language.

Baidu encyclopedia-western regions