Gansu Province, situated on the upper reaches of the Yellow River in northwestern China, is bounded on the east by Shaanxi Province, on the south by Sichuan and Qinghai provinces, on the west by...
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Gansu Province, situated on the upper reaches of the Yellow River in northwestern China, is bounded on the east by Shaanxi Province, on the south by Sichuan and Qinghai provinces, on the west by...