Gaochang
Gaochang was built in the 1st century BC, it was an important site along the Silk Road. It played a key role as a transportation hub in western China. The Jushi kingdom invited the Chinese Han dynasty to take over, and pledged their allegiance. In 327, the Gaochang commandery was created by the Former Liang under the Han Chinese ruler Zhang Gui, set up a military colony/garrison, and organized the land into multiple divisions. Chinese colonists from the Hexi region and the central plains also settled in the region.