Dujiangyan, Sichuan is a great world-famous water conservancy project of ancient China.

Originated in the south of northern Sichuan's Min Shan Jiang sleep, water is abundant, when it all the way out of Guanxian Pentium northwest mountains, they entered the plains from the mountains, the flow rate plummeted, easy silt flood, people victimized by floods . Two thousand two hundred years ago, coincided with the late Warring States, Qin as Shujun Li Bing, prefect appointed. Li Bing and his son in-depth visits, summed up the experience of previous flood control, irrigation northwest in the Minjiang River watershed in the construction of a weir, which in the Minjiang river quartet built with bamboo cages filled with pebbles of fish head shaped weir, the next puzzle inside and outside the embankment King Kong, the Minjiang River is divided into inside and outside the two rivers. Outside the river flow at the weir west is positive, even under irrigation channels, both drainage function, Neijiang in the weir East, and Southwest Yu Leishan to discharge excavated Guanxian Road, said the treasure bottle, so that water flows into the Chengdu Plain, as irrigation and navigable rivers. Bottle in the upper west side of the Po, construction and other windblown sand weir spillway project, so too much into the Neijiang flood swept over the top and into the outside river weir to ensure the safety of irrigated plains, in peacetime, but also played to raise the water level, the higher ground water flow smoothly into the role of treasure bottle. Dujiangyan Weir formerly Duan, Song later said Dujiangyan. Chengdu Dujiangyan battle level salty "fertile fields: Wild thousand miles," people will not know hunger, known as the "Land of Abundance." For thousands of years, world irrigated area under its profits. Dujiangyan ancient China to become a great scientific and technological development in the history of pioneering, world-class reputation abroad. Bing also go down in history.

To commemorate Li Bing and his son for generations of outstanding contribution to the people of Dujiangyan in Sichuan Yu Leishan side next to the construction of a "Second Temple", has plastic Li Bing and his son as the temple for people to look at and worship.

Li Bing, the ancient Dujiangyan follow the rule of reason Bing set "Centaur Beach, low weir" governance principles to ensure that future generations benefit the people of Dujiangyan. However, the Yuan dynasty, but not deep scouring low, but rather the use of iron rope, tractor, iron posts and other objects owned bank, both spent a lot of manpower and resources, but can not play a flood of traffic with a flood, was washed away, the Minjiang River began to endanger people. Ming Masanori years, Changshu Lu Yi to Sichuan, Water Justice Resentment things worked prefect. He learned the lessons of the failure of flood control since the Yuan Dynasty, through field reconnaissance, in-depth investigations, site visits repeated comparisons, Bing decided to restore the rule laid down in the sixth ancient water.

Lu Yi launch workers, full use of bamboo resources mountain into a yung only three feet long, one foot eight-inch diameter line the cage, mounted on the pebbles picked up on from the marshland. While dredging the river to mobilize three thousand workers were to remove a lot of mud, root out the flood control when listening to Bing Lin buried engraved "Centaur Beach, low weir," the sixth of the depth of the iron, then the collapse of bamboo filled with pebbles cage into the water for the weir-based stack, then the base above the weir built weir.

After Lu Yi governance, Dujiangyan and restore the original (anti-arch, the role of irrigation and navigation interests), "Land of Abundance" once again worthy of the name.
Lu Yi Dujiangyan active dredging for Du Li was promoted to Yunnan in politics. In Yunnan, he has water conservancy, dam water, the use of spring irrigation, lifting the drought often occurs around the Erhai Lake, increased food production, which was promoted to lieutenant-governor of Guangxi left (a province of the Chief Executive).
Lu Yi people in Sichuan made a great contribution, denied. Sichuan People's Temple in two of his statue in plastic, with the ancient Dujiangyan active control characters, such as the Western Han Dynasty when the emperor Shujun Wen Weng Shou, Three Kingdoms, Zhuge Liang, prime minister of Shu, who's statue together, allow people to pay their last respects to commemorate; his deeds have also been incorporated in the "Dujiangyan hero biography," a book he wrote of the "flood control in mind," carved inscription placed in the Second Temple period.

Lu Yi, the word Feng Chong, Changshu Jiangnan, Ming Zheng, the water Sichuan Justice Resentment of any prefect thing he summarized previously by Yuan Amoy low for detection, the use of iron rope, tractor, pillar, etc. 'to iron kind of weir 'of failures, and restore Centaur cage low stone weir for the traditional method, and personally Duli dredging, has received very good results. To insist on descendants of Li Bing flood control rule, he will experience flood carved inscriptions, and big book "Centaur Beach, low weir" in Mission Hills Pavilion on the sixth to Zhao Yong Kam, the Dujiangyan to preserve and develop science and technology has .