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Gansu, sheng (province), north-central and northwestern China. It is bordered by Mongolia to the north, the Inner Mongolia Autonomous Region to the northeast, the Hui Autonomous Region of Ningxia and the province of Shaanxi to the east, the provinces of Sichuan and Qinghai to the south and southwest, and the Uygur Autonomous Region of Xinjiang to the west. A vital strategic pivot linking the centre of the country with the vast territory in the extreme...