![](http://www.ecns.cn/hd/2021/10/26/69d20dad5e954577a6f5c66514a8413f.jpg)
Photo taken on Oct. 25, 2021 shows Moon Bay in Hongyuan County of Aba Tibetan and Qiang Autonomous Prefecture, southwest China's Sichuan Province. (Photo: China News Service/Xiao Rong)
Moon Bay is a section of the Baihe river, an important water source in the upper reaches of the Yellow River.
![](http://www.ecns.cn/hd/2021/10/26/20805483288547979ca1fa7b2a872834.jpg)
Photo taken on Oct. 25, 2021 shows Moon Bay in Hongyuan County of Aba Tibetan and Qiang Autonomous Prefecture, southwest China's Sichuan Province. (Photo: China News Service/Xiao Rong)
![](http://www.ecns.cn/hd/2021/10/26/fdd96243d0534061820ee21e5f738c41.jpg)
Photo taken on Oct. 25, 2021 shows Moon Bay in Hongyuan County of Aba Tibetan and Qiang Autonomous Prefecture, southwest China's Sichuan Province. (Photo: China News Service/Xiao Rong)
![](http://www.ecns.cn/hd/2021/10/26/834366f097204519b9dc43309a978ef2.jpg)
Photo taken on Oct. 25, 2021 shows Moon Bay in Hongyuan County of Aba Tibetan and Qiang Autonomous Prefecture, southwest China's Sichuan Province. (Photo: China News Service/Xiao Rong)
![](http://www.ecns.cn/hd/2021/10/26/28765d9f482c43e48fda9071a771e298.jpg)
Photo taken on Oct. 25, 2021 shows Moon Bay in Hongyuan County of Aba Tibetan and Qiang Autonomous Prefecture, southwest China's Sichuan Province. (Photo: China News Service/Xiao Rong)