Dujiangyan canal head hub is mainly composed of three main projects: fish mouth, flying sand weir and treasure bottle mouth. The three factors cooperate organically, restrict each other, operate cooperatively, divert water for irrigation, divert flood and reduce disasters, thus having the characteristics of "four points and six points, and relieve drought".
Dujiangyan is a world cultural heritage (listed in the "World Cultural Heritage" list by UNESCO in 2000), a world natural heritage (giant panda habitat in Sichuan), a national key cultural relics protection unit, a national scenic spot and a national AAAAA-level tourist attraction.
Dujiangyan is located in the west of Dujiangyan City, Sichuan Province, on the Minjiang River in the west of Chengdu Plain. Dujiangyan water conservancy project, which was built in 256 BC, is the oldest and only grand water conservancy project in the world. Its characteristic is that no dam is built to divert water. It is a national key cultural relics protection unit. Dujiangyan has beautiful scenery and many cultural relics, including Fulongguan, Erwang Temple, Anlan Suoqiao, Yuleiguan, Lidui Park, Yuleishan Park and Lingyan Temple.