The content of this product is provided by machine translation and may not reflect the actual information, please take this into consideration before booking.The Dujiangyan Irrigation System, located on the Minjiang River in the western Chengdu Plain, was built in 256 BC. Composed of the Fish Mouth Weir, Feisha Weir, and Baopingkou (Bottle-Neck Pass), it is the oldest and only surviving large-scale irrigation project in the world that features damless water diversion. It was officially listed as a "World Irrigation Engineering Heritage" site in 2018 and has been in continuous operation for 2280 years. Business Hours• November 1st to March 1st of the following year 08:00 - 17:30 (Ticket sales stop at 17:00)• March 2nd - October 31st each year 08:00 - 18:00 (Ticket sales stop at 17:30)