A Chinese serow is seen at a forest farm in Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Aug. 29, 2020. In recent years, Chinese serows frequently appear at Sanjiangyuan, which is the home to the headwaters of the Yangtze, Yellow and Lancang rivers. (Photo by Pan Binbin/Xinhua)

A Chinese serow is seen at a forest farm in Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Aug. 29, 2020. In recent years, Chinese serows frequently appear at Sanjiangyuan, which is the home to the headwaters of the Yangtze, Yellow and Lancang rivers. (Photo by Pan Binbin/Xinhua)

A Chinese serow is seen at a forest farm in Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Aug. 29, 2020. In recent years, Chinese serows frequently appear at Sanjiangyuan, which is the home to the headwaters of the Yangtze, Yellow and Lancang rivers. (Photo by Pan Binbin/Xinhua)

A Chinese serow is seen at a forest farm in Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Aug. 29, 2020. In recent years, Chinese serows frequently appear at Sanjiangyuan, which is the home to the headwaters of the Yangtze, Yellow and Lancang rivers. (Photo by Pan Binbin/Xinhua)

A Chinese serow is seen at a forest farm in Baizha Township of Nangqian County, Yushu Tibetan Autonomous Prefecture, northwest China's Qinghai Province, Aug. 29, 2020. In recent years, Chinese serows frequently appear at Sanjiangyuan, which is the home to the headwaters of the Yangtze, Yellow and Lancang rivers. (Photo by Pan Binbin/Xinhua)