An aerial drone photo taken on May 20, 2025 shows the Tuofengling Tianchi (Heavenly Lake) at the Arxan national forest park in Arxan, north China's Inner Mongolia Autonomous Region. Arxan, a city with less than 40,000 residents and a vegetation coverage of over 95 percent, sits at the southwestern foot of the Dahinggan Mountains, also the intersection of four major grasslands in northern China. It is now an increasingly popular tourist destination. (Xinhua/Ma Jinrui)