Wolonghai Small and delicate Wolonghai is a typical representative of the blue lake, and it is extremely blue and intoxicating. The water on the lake is not good, quiet and peaceful, like a smooth, crystal clear sapphire. Through the wave-like water surface, a milky white travertine long dike lie across the lake, like a dragon snorkeling to the bottom of the sea. The waterfall water pouring down is crystal clear, like a glass that will flow, the sound of water is soaring, washing the soul, the impermanence that can't be seen in the fairyland, only Jiuzhai according to ancient times, near the Heishui River Black dragon. Every year, Jiuzhai people are dedicated to ninety-nine days before they can drink. Bailong of Bailongjiang sympathizes with the people. He wants to send the Bailong River water to Jiuzhai. He is obstructed by the Black Dragon. The two dragons struggled, and the white dragon did not sink into the lake. The god of Wanshan came to surrender the black dragon. However, Bai Long and then returned to Bailongjiang, and turned into a yellow dragon at the bottom of the long-sleeved lake. When people miss it, they call this sea Wolonghai. Ouyang Xiu has a saying, "The meaning of drunkenness is not in wine, but also between mountains and rivers." In Jiuzhaigou, looking at the picturesque scenery, there is really a feeling of not drinking and drunk. It is an inexplicable excitement, a state of swaying, not immersive, difficult to understand.