An aerial drone photo shows a view of the Dahei River country park in Hohhot City, north China's Inner Mongolia Autonomous Region, Jan. 11, 2025.

Once polluted by improper economic activities in the area, the Dahei River basin has now become an ideal habitat for migrant birds and also heaven for bird lovers, thanks to the ecological restoration measures taken in recent years. (Xinhua/Lian Zhen)