Aerial photo taken on Nov. 19 shows the Yani Wetland at sunset. Photo/ Dong Zhixiong

In early winter, the Yani Wetland in Nyingchi City, Xizang Autonomous Region, is a picturesque scene of colorful vegetation, migrating birds, rushing rivers and snow-capped mountains. 

Aerial photo taken on Nov. 19 shows the Yani Wetland at sunset. Photo/ Dong Zhixiong

Aerial photo taken on Nov. 19 shows the confluence of the Niyang River and the Yarlung Zangbo River flowing through the Yani Wetland. Photo/ Dong Zhixiong

Aerial photo taken on Nov. 19 shows the scenery of the Yani Wetland. Photo/ Dong Zhixiong

Aerial photo taken on Nov. 19 shows the scenery of the Yani Wetland. Photo/ Dong Zhixiong