Photo taken on June 25, 2020 shows a view of the Yamzbog Yumco Lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Hou Jie)

Aerial photo taken on June 25, 2020 shows a view of the Yamzbog Yumco Lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Chen Shangcai)

Aerial photo taken on June 25, 2020 shows a view of the Yamzbog Yumco Lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Zhan Yan)

Aerial photo taken on June 25, 2020 shows a view of the Yamzbog Yumco Lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Chen Shangcai)

Aerial photo taken on June 25, 2020 shows a view of the Yamzbog Yumco Lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Zhan Yan)

Aerial photo taken on June 25, 2020 shows a view of the Yamzbog Yumco Lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Zhan Yan)

Aerial photo taken on June 25, 2020 shows a view of the Yamzbog Yumco Lake in Shannan, southwest China's Tibet Autonomous Region. (Xinhua/Chen Shangcai)