Gansu Province, Ningxia Hui Autonomous Region, Qinghai Province, Xinjiang Uygur Autonomous Region, Shaanxi Province, the city of Xian, the Xinjiang Reclamation Department and the United Nations...
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Gansu Province, Ningxia Hui Autonomous Region, Qinghai Province, Xinjiang Uygur Autonomous Region, Shaanxi Province, the city of Xian, the Xinjiang Reclamation Department and the United Nations...