Photo taken on June 28, 2015 shows the Puma Yumco Lake with an altitude of about 5,000 meters in Lhozhag County, southwest China's Tibet Autonomous Region. (Xinhua/Liu Dongjun)

　　Photo taken on June 28, 2015 shows glacier near the Puma Yumco Lake with an altitude of about 5,000 meters in Lhozhag County, southwest China's Tibet Autonomous Region. (Xinhua/Liu Dongjun)

　　Photo taken on June 28, 2015 shows the Puma Yumco Lake with an altitude of about 5,000 meters in Lhozhag County, southwest China's Tibet Autonomous Region. (Xinhua/Liu Dongjun)