![](http://www.ecns.cn/hd/2020/05/22/7448d6dca60c4491a7ba20931d4fd4fc.jpg)
A picture taken by an infrared camera shows a snow leopard at the source region of the Yellow River in Northwest China’s Qinghai Province.(Photo provided to China News Service)
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A picture taken by an infrared camera shows a wolf at the source region of the Yellow River in Northwest China’s Qinghai Province.(Photo provided to China News Service)
![](http://www.ecns.cn/hd/2020/05/22/f23bca34e6884fccb6d328c473a2f3c2.jpg)
A picture taken by an infrared camera shows a lynx at the source region of the Yellow River in Northwest China’s Qinghai Province.(Photo provided to China News Service)
![](http://www.ecns.cn/hd/2020/05/22/7fb7687650fb4258a371db388656b523.jpg)
A picture taken by an infrared camera shows blue sheep at the source region of the Yellow River in Northwest China’s Qinghai Province.(Photo provided to China News Service)
![](http://www.ecns.cn/hd/2020/05/22/aff5c8d8ec224af399b3d3e44bcc01d6.jpg)
A picture taken by an infrared camera shows white-lipped deers at the source region of the Yellow River in Northwest China’s Qinghai Province.(Photo provided to China News Service)