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Photo taken on June 26, 2017 shows an aerial view of Tangra Yumco Lake in Nagqu, southwest China's Tibet Autonomous Region.(Xinhua/Purbu Zhaxi)
Xinhua Headlines: Qinghai-Tibet Plateau still one of cleanest regions on earth
Source: Xinhua| 2018-07-18 20:42:51|Editor: Xiang Bo
