Photo taken on Jan. 15, 2021 shows Tibetan antelopes on northern Tibetan plateau, southwest China's Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on Jan. 15, 2021 shows Tibetan antelopes on northern Tibetan plateau, southwest China's Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on Jan. 15, 2021 shows Kiangs (Equus kiang) on northern Tibetan plateau, southwest China's Tibet Autonomous Region. (Xinhua/Shen Hongbing)

Photo taken on Jan. 16, 2021 shows Kiangs (Equus kiang) on northern Tibetan plateau, southwest China's Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

Photo taken on Jan. 15, 2021 shows a wild yak on northern Tibetan plateau, southwest China's Tibet Autonomous Region. (Xinhua/Zhang Rufeng)

A kestrel flies over northern Tibetan plateau, southwest China's Tibet Autonomous Region, Jan. 16, 2021. (Xinhua/Zhang Rufeng)

Photo taken on Jan. 15, 2021 shows Tibetan antelopes on northern Tibetan plateau, southwest China's Tibet Autonomous Region. (Xinhua/Shen Hongbing)