Take the underground passage from the place where you get off. The left-hand trestle leads to Tiger's mouth. The right-hand trestle leads down to the water. Tiger's mouth is a viewing platform for the panoramic view of the Five-Flower Sea. You can see the colorful Five-Flower Sea stretching out below like an open-screen peacock. The trestle was a little long, and all the way up the hill, so we walked for half an hour. The trestle road is lined with dense trees and mossy rocks. It is a small primitive forest. Five flowers are 2462 meters above sea level, 450 meters long, 227-313 meters wide, 12 meters deep and 600,000 cubic meters in storage capacity. The colorful lake water is caused by the travertine deposits on the seabed, the brilliant algae and the differences in the distribution of submerged plants. For a picnic in the woods by the lake, after eating enough and wandering around the lake, there is an incredibly colorful water surface. The green and blue colours are distinct, and each colour is so charming.