Introduction to Dragon Spewing Rainbow: There is a sculpture of a flying dragon in the mountain stream of Longquan Temple. It spits out fountains and the sound shakes the surrounding areas. Fog rises in the valley. When the sun shines, a rainbow hangs on the mountainside and reflects on the side of the dragon, making people feel like they are in a fairyland. , this is the famous spectacle of a dragon spitting out a rainbow.