Qinghai, a province of west China, is located in the northern part of the Qinghai-Tibet Plateau, the roof of the world." Its terrain varies from high mountains to vast prairies, contains China's...
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Qinghai, a province of west China, is located in the northern part of the Qinghai-Tibet Plateau, the roof of the world." Its terrain varies from high mountains to vast prairies, contains China's...