Nestled 50 km northwest of Chengdu, the Dujiangyan Irrigation System stands as a testament to ancient Chinese ingenuity. Built in 256 BC during the Warring States Period, this UNESCO World Heritage Site remains the world’s oldest dam-free water diversion project still in use today.
Designed by governor Li Bing and his son, it transformed the flood-prone Chengdu Plain into the “Land of Abundance” and continues to irrigate over 5,300 km² of farmland.
Engineering Brilliance Beyond Time
Dujiangyan’s success lies in its harmony with nature, avoiding dams to instead utilize three key components:
1.Yuzui (Fish Mouth):
Splits the Minjiang River into inner and outer channels, directing 60% of water to farmlands in dry seasons and 60% of floodwaters to the outer river.
2.Feishayan (Flying Sand Weir):
A spillway that uses centrifugal force to remove 75% of sediment, keeping the system clog-free for millennia.
3.Baopingkou (Bottle-Neck Channel):
A 20-meter-wide gorge carved through Mount Yulei, regulating water flow with precision.
Unlike modern dams, this system requires no machinery—its design leverages natural terrain and hydrology, earning recognition as a “masterpiece of human creativity”.
Cultural Legacy & Modern Appeal
Beyond engineering, Dujiangyan is a cultural treasure:
1.Erwang Temple:
Honors Li Bing and his son with Qing Dynasty architecture and annual water-releasing festivals.
2.Anlan Suspension Bridge:
A 320-meter marvel offering panoramic views of the Minjiang River.
3.Nighttime AR Illuminations:
Since 2023, projections bring ancient battles like “Burning Red Cliff” to life on historical walls.
Nearby, the Qingcheng Mountain (15 km away) complements a visit with Taoist temples and hiking trails.
Visitor Tips for an Authentic Experience
- Best Time to Visit: March–May or September–November for mild weather.
- Transport: Take Chengdu Metro Line 2 to Xipu Station, then transfer to a 20-minute high-speed train.
- Local Flavors: Try Dujiangyan cured pork and Chuanbei herbal jelly at Jinli Ancient Street’s food stalls.
- Avoid Crowds: Weekday mornings offer quieter exploration of the 2.5-km scenic area.
Why Dujiangyan Resonates Globally
Dujiangyan’s legacy transcends borders. It inspired modern fluid dynamics principles and symbolizes sustainable development—a 2,300-year-old answer to today’s climate challenges. As the “Originator of World Water Conservancy Culture”, it invites travelers to witness where history, nature, and innovation converge.
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