Photo taken on May 24, 2019 shows Tibetan wild donkeys in Shuanghu County of Nagqu, southwest China's Tibet Autonomous Region. (Xinhua/Zhou Jinshuai)

Photo taken on May 23, 2019 shows Tibetan wild donkeys in Shuanghu County of Nagqu, southwest China's Tibet Autonomous Region. (Xinhua/Zhou Jinshuai)

Photo taken on May 23, 2019 shows a Tibetan antelope in Nagqu, southwest China's Tibet Autonomous Region. (Xinhua/Zhou Jinshuai)

Photo taken on May 23, 2019 shows a Tibetan gazelle in Shuanghu County of Nagqu, southwest China's Tibet Autonomous Region. (Xinhua/Zhou Jinshuai)