![Scenery of Altun Mountains National Nature Reserve in Xinjiang(5/13)](http://www.ecns.cn/hd/2018/04/05/fccb10f7bcb846628796b3076956337b.jpg)
This aerial photo taken on April 2, 2018 shows a wild yak in the Altun Mountains National Nature Reserve in northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Jiang Wenyao)
This aerial photo taken on April 2, 2018 shows a wild yak in the Altun Mountains National Nature Reserve in northwest China's Xinjiang Uygur Autonomous Region. (Xinhua/Jiang Wenyao)