Lidui Park covers an area of more than 90 mu and was completed in 1932. The antithetical couplet at the gate of the park: "After the Goddess Yu and his axe, the land and sea are unparalleled, and the canals are inscribed with Qin Shouhui; the whole Shu Mountain is beautiful, the river is the first, and the famous garden is beautiful". The upper couplet said that Tianfu, known as "land and sea", was unparalleled in the world, and it was thanks to the prefect Li Bing, who took over the great axe of Dayu and completed the great Dujiangyan water conservancy project; The second couplet said that the park is one of the highlights of the famous mountains and waters in Sichuan, which is the first in Dujiangyan City. The pavilions and pavilions in the park are well arranged, with ancient wooden pile heads, exotic flowers, pools and fountains. The layout is exquisite and interesting. There are crape myrtle vases and crape myrtle screens in the park, which have been cultivated for two or three hundred years and are unique; This ancient ginkgo stake head, which is said to be planted by Zhang Song in the late Eastern Han Dynasty, is still slim and luxuriant, like a crane. It is said that it bears fruit with the inspiration of the landscape here. Crape myrtle vase, crape myrtle screen and ginkgo stake are called "three treasures in the garden". Here you can see a small hillock with 42 steps, called Leadui, which is a solitary pile separated from Yulei, carved by Li Bing who led the working people to open the mouth of the treasure bottle and irrigate the western Sichuan Plain with Minjiang River water. The "Lidui" stele and the "Buddhist Sanskrit stele" on both sides are set up by later generations and intended to use the divine power to control the water disaster forever. The Fulong Temple, formerly known as Fan Xian Hall, was built in the Jin Dynasty to commemorate Fan Changsheng, a sage in the Three Kingdoms period. Fan Changsheng, a native of Fuling, Sichuan Province, is said to have the skill of longevity. He was more than 130 years old and learned a lot. Liu Bei and Zhuge Liang asked him to be an official, but they couldn't summon him and wanted to be an immortal. At that time, they called him "Xiaoyao Gong". In the early years of the Northern Song Dynasty, the people remembered Li Bing's achievements, expanded the palace, followed Li Bing's legend of "subduing the dragon and harnessing the water", and renamed it the Fulong Temple. In the middle of the front hall, there is a stone statue of Li Bing. It is a very precious cultural relic excavated from the river when the Anlan Cable Bridge was relocated in 1974. It is 2.9 meters high and weighs four and a half tons. It is simple in shape and dignified in shape. With arms folded in front of the chest and a smile on the face, it was carved in the first year of Jianning in the Eastern Han Dynasty (168 AD). It has been more than 1800 years. The middle line reads "Therefore, Li Fujun of Shujun kept away from ice." There is a line on the right sleeve that reads "Yin Longchang and Chen Yi built three gods and stone men in the world", indicating that Chen Yi, the water conservancy official at that time, built three stone statues. What role does it play? The Chronicles of Huayang State said: "As a three stone man, standing in the water, making an appointment with the river god, the water can not be exhausted enough, and the water can not be filled without shoulder", which is used as a hydrological marker. On the left is a broken stone statue of a man holding a fork. His head is damaged, and a short ribbon is tied around his waist, which proves that he is not a high official. He has no words on his chest and holds a shovel. He is an unknown hero. He is Li Erlang. The third stone statue has not yet been found and is still hidden in the riverbed of Minjiang River. These two statues are valuable cultural relics for studying the history of Dujiangyan and ancient hydrological science. On the right is an iron tripod with flying dragons of the Tang Dynasty. There are eight dragons all over the body. This iron tripod was used by Empress Wu Zetian's granddaughter, Princess Yuzhen and Princess Jinhua, the eighth daughter of Tang Ruizong, who were dissatisfied with the life of fighting each other and contending for power and position in the palace. They left the palace and came to the secluded Qingcheng Mountain for monastic practice. The iron tripod was unearthed at the Imperial Temple on Qingcheng Mountain during Xianfeng's reign in the Qing Dynasty. It weighs about 1000 kg and eight flying dragons have their own expressions, It is a cultural relic with exquisite craftsmanship. In addition, there is a water system map of Dujiangyan drawn in 1938, which reflects the historical features of the canals in Dujiangyan at that time. Dujiangyan water conservancy project should include headworks, main stream canals and irrigation tributaries with dense networks. Dujiangyan now generally refers to the headworks. The viewing pavilion of Fulong Temple is the best place to view the whole picture of Dujiang Road headworks. Dujiangyan Headworks consists of three projects, namely, the Fish Mouth Diversion Embankment, the Feisha Weir Spillway and the Baopingkou Water Diversion Channel. The scientific method of "diversion and weir construction" is adopted to form an organic whole. Yuzui water diversion dike. From a distance, the Minjiang River rises from Gonggang Ridge in Songpan County, flows through Maoxian County, Wenchuan, Dujiangyan, Leshan and other places, and joins the Jinsha River in Yibin City, known as the Yangtze River. It has a total length of 735 kilometers and an annual average flow of 496 cubic meters. It is because of its rich water resources. From the mountains and canyons at the upper reaches, it surges and runs here. Facing the fan-shaped western Sichuan plain with gradually lower terrain, there is no constraint, and a serious flood will occur in the flood season. After Li Bing inspected here in the past year, he decided to turn harm into benefit. He made use of the unique terrain conditions to build a diversion dike in the center of the river. It lies like a whale against the river. The top of the dike is conical, like a fish's mouth, so it is called "fish's mouth". Yuzui divides Minjiang River into internal and external rivers. To the west is the external river, which is the positive flow of Minjiang River and is mainly used for flood and sediment discharge; To the east is the Neijiang River, an irrigation channel along the Yulei Mountain. Feisha Weir, Spillway. In ancient times, it was called "water reducing river", meaning to discharge flood and sand. It is located at the end of the Vajra Causeway. According to a certain elevation (2.15m high from the riverbed to the river surface), a 200 meter wide opening is opened from south to north. When the water volume of the Neijiang River is small, it blocks water into the irrigation area of the Neijiang River; When there is a large amount of water in the inner river, it discharges the excess water to the outer river. Due to its ingenious location design, it has a strong sand and stone discharge capacity, and can discharge the sand and stone flowing into the inner river, so it is called a flying sand weir. Aquarius mouth. Located at the foot of the pile, it is the throat of the Neijiang River. It is a 20 meter wide, 40 meter high, and 80 meter long hole that Li Bing cut in those years. It is shaped like a bottleneck, so it is called "Baopingkou". The water in the inland river is washed here and pushed against the stack, forming backwater and swirling flow, making the water more clear, and then entering. During the flood period, the internal river was forced not to flood into the narrow Baopingkou in large quantities, so it had to back up with the whirlpool and discharge from the Feisha Weir to the external river, acting as a control gate to ensure the safety of the Chengdu Plain. These three projects, with rigorous structure, perfect layout, interdependence and mutual restriction, form an organic whole and receive the benefits of "water diversion for irrigation and flood diversion for disaster reduction". After passing through the Baopingkou, the water in the Neijiang River is divided into tens of thousands of irrigation channels through the trunk canal to form a crisscross fan shaped irrigation network, making the western Sichuan Plain a fertile land with abundant agricultural products and becoming the "Land of Abundance".
