Dujiangyan, a world-famous Chinese ancient irrigation system, consists of Fish Mouth Levee (Yuzui), Flying Sand Weir (Feishayan), Bottle-Neck Channel (Baopingkou), etc. There are also numerous tourist attractions nearby for visitors to enjoy a cool summer. Mount Qingcheng, located close to the Dujiangyan Irrigation System, consists of two parts - the Front Mountain and the Back Mountain. As one of the four most famous Taoist mountains in China, the Front Mountain possesses a variety of old trees and historic sites, such as the Tianshi Cave, the Zushi Palace, and the Shangqing Palace. The Back Mountain boasts of natural landscape and precipitous mountain path, becoming an ideal place to go hiking in summer. When you go downhill to cross Cuiying Lake, you can pass the river with a boat supported by a bamboo pole with a unique sense of simplicity and tranquility welling up in your heart. Tourists can enjoy the cool summer in both the Front Mountain and the Back Moutain.