Introduction to Xinglong Valley: Xinglong Valley is more than 600 meters long, 2 to 5 meters wide, and 1.5 to 4 meters deep. The small stream in the valley flows gurgling like a swimming dragon, winding down for hundreds of meters. Only when visitors stroll along the stream can they appreciate the wonderful state of the blending of mountains and rivers: "The stream is winding due to the mountains, and the mountain roots are flat everywhere."