Liaodong generation was a vassal state of the Tang Dynasty.

At its peak, the territory of the Tang Dynasty started from the Korean Peninsula in the east, Hue in Vietnam in the south, Aral Sea and Khorasan in Central Asia in the west, and Lake Baikal in the north to the lower reaches of Yenisei River. There were many ethnic minorities in the Tang Dynasty. In order to effectively manage the Turkic, Uighur, Tiele, Shiwei, Qidan, Mohong and other ethnic groups, six states, namely Anxi, Anbei, Anton, Annan, Chanyu and Beiting, as well as a large number of states and Jimi states belonging to the six states, were established respectively. However, in the decades after the Anshi Rebellion, because a large number of border guards in Helong participated in the rebellion, the border defense was empty, and the Tubo took advantage of the situation to occupy the areas of Helong and Huangshui, while the Hetao area was still under the jurisdiction of the German army and Zhenwu army. Until the end of the Tang Dynasty, from Dazhong to Xian Tong, Zhang Yichao, a native of Shazhou, rose up, recovered the Helong area, reopened the Silk Road, defeated Tubo in Xian Tong for seven years and split into more than 100 tribes.