Dunhuang, a county-level city in Gansu Province, is hosted by Jiuquan City and located at the westernmost end of Hexi Corridor, where Gansu, Qinghai and Xinjiang provinces (regions) meet.
Dunhuang is a node city of the Silk Road, famous for its "Dunhuang Grottoes" and "Dunhuang Murals". It is the location of the Mogao Grottoes, a world heritage site, Yumenguan and Yangguan on the border of the Great Wall in Han Dynasty, and one of the four oases in Gansu Province.