Introduction to the Fog Belt and Fog Valley: In the spring rainy season, water from the small valleys on both sides of the river converges and flows down the cliff, forming a "hundred waterfalls returning to the river". The spring fog is thick, and the long valley forms a "fog belt and fog valley" landscape. Against the background of the forest on the cliff, the landscape of "a line of blue sky" and "a line of seam on the ground" is formed.