Photo taken on Dec. 16, 2020 shows scenery of Donggi Cona Lake in Tibetan Autonomous Prefecture of Golog, northwest China's Qinghai Province. (Photos: Xinhua)

Aerial photo taken on Dec. 16, 2020 shows scenery of Donggi Cona Lake in Tibetan Autonomous Prefecture of Golog, northwest China's Qinghai Province.

Aerial photo taken on Dec. 16, 2020 shows scenery of Donggi Cona Lake in Tibetan Autonomous Prefecture of Golog, northwest China's Qinghai Province.

Photo taken on Dec. 15, 2020 shows scenery of Donggi Cona Lake in Tibetan Autonomous Prefecture of Golog, northwest China's Qinghai Province.

Photo taken on Dec. 16, 2020 shows scenery of Donggi Cona Lake in Tibetan Autonomous Prefecture of Golog, northwest China's Qinghai Province.

Photo taken on Dec. 16, 2020 shows scenery of Donggi Cona Lake in Tibetan Autonomous Prefecture of Golog, northwest China's Qinghai Province.