Photo taken by infrared camera on Nov. 16, 2017 shows a wild leopard in Baizha forest farm of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. A total of 21 pieces of video footage and photos of wild leopard have been taken during a biological diversity survey in the forest farm since Oct. 17. (Photo provided by Shanshui Conservation Center)
Photo taken by infrared camera on Oct. 28, 2017 shows a wild leopard in Baizha forest farm of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. A total of 21 pieces of video footage and photos of wild leopard have been taken during a biological diversity survey in the forest farm since Oct. 17. (Photo provided by Shanshui Conservation Center)
Photo taken by infrared camera on Oct. 28, 2017 shows a wild leopard in Baizha forest farm of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. A total of 21 pieces of video footage and photos of wild leopard have been taken during a biological diversity survey in the forest farm since Oct. 17. (Photo provided by Shanshui Conservation Center)
Photo taken by infrared camera on Oct. 25, 2017 shows a wild leopard in Baizha forest farm of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. A total of 21 pieces of video footage and photos of wild leopard have been taken during a biological diversity survey in the forest farm since Oct. 17. (Photo provided by Shanshui Conservation Center)
Photo taken by infrared camera on Aug. 15, 2017 shows wild leopards in Baizha forest farm of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province. A total of 21 pieces of video footage and photos of wild leopard have been taken during a biological diversity survey in the forest farm since Oct. 17. (Photo provided by Shanshui Conservation Center)