![](http://www.ecns.cn/hd/2023/05/06/ac93644cc9d741e3abf069526e18f2f0.jpg)
A herd of red deer cross the Buha River in Gangcha County of Haibei Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo/China News Service)
The 300-kilometer long Buha River is the largest and longest tributary in the Qinghai Lake catchment.
![](http://www.ecns.cn/hd/2023/05/06/a1e29ecf26ec4e46b6e0ddbd08012380.jpg)
A herd of red deer wander on the bank of the Buha River in Gangcha County of Haibei Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo/China News Service)
![](http://www.ecns.cn/hd/2023/05/06/41d70106cd7342d7ad2ce7321b0da143.jpg)
A herd of red deer cross the Buha River in Gangcha County of Haibei Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo/China News Service)
![](http://www.ecns.cn/hd/2023/05/06/f0fd02ba7986407f982e1a11d2e3e705.jpg)
A herd of red deer wander on the bank of the Buha River in Gangcha County of Haibei Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo/China News Service)
![](http://www.ecns.cn/hd/2023/05/06/c24372cf56eb4046b42b1ddcc357b3b3.jpg)
A herd of red deer cross the Buha River in Gangcha County of Haibei Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo/China News Service)
![](http://www.ecns.cn/hd/2023/05/06/5c40672361994afea210e9992521e5ca.jpg)
A herd of red deer cross the Buha River in Gangcha County of Haibei Tibetan Autonomous Prefecture, northwest China's Qinghai Province. (Photo/China News Service)