Speaking of Sichuan Dujiangyan, we all know is the world irrigation project heritage. In fact, this thousand-year-old weir not only created a rich brocade Tianfu, but also gave birth to a Guanxian ancient city known as "mountains and rivers into the Huai, life center ". Founded in the period of the Southern and Northern dynasties (420-589), the ancient city of Guanxian County, because of the Weir, because of the water and prosperity, is one of the birthplaces of ancient Shu. Guanxian ancient city as the starting point of tea horse ancient road and the most important material distribution center, for thousands of years has been the west imperial Tubo, east control of the western Sichuan plain, arch Wei Chengdu barrier, can be flights from bangkok to guangzhou called "the first gateway to western Sichuan ". Hongzhi mid-Ming Dynasty, Zhixian Huguang masonry wall, laid the pattern of the county. One of the Dongcheng Gate "Xuanhua Gate ", has become a tourist to Dujiangyan must" punch "one of the scenic spots. The whole ancient city covers an area of 2.86 square kilometers, with a total population of 48724 people, entering Xuanhua Gate, the houses on both sides of the street are mostly typical wooden structures of western Sichuan folk houses. According to records, from the qing dynasty to the republic of china, aba and other places produced medicinal herbs mainly sold here, due to economic and trade development, shops inside and outside the city, prosperity, known as "small chengdu ". Although the prosperous scene of the ancient city has long ceased to exist, its thick cultural accumulation, unique local customs and romantic life sentiment have always attracted visitors from all sides. In recent years, the local historical and cultural district of the city has been protected transformation, reproduced the "city has a scene, there is a city, half a mountain and half a city" historical style. Located outside the south gate of the ancient cheap flights from bangkok to guangzhou city, the south bridge at the bottom of the mouth of the dujiangyan treasure bottle is a corridor-style bridge across the inner river. After thousands of years of fighting and flooding, the bridge has been damaged several times, and the existing south bridge was rebuilt by local government funds in 1979. In 2009, the reinforced and repaired south bridge became one of the main landscapes of Dujiangyan scenic spot, known as the "Tianfu first bridge ". The Dujiangyan, founded around the late Qin Dynasty (256 BC), is a large water conservancy project organized by the Li Bing father and son of Tai Shou in Shu County on the basis of the excavation of the previous turtle Ling. Its greatest point is that Jianyan has been playing the role of flood control and irrigation for more than 2250 years, making Chengdu Plain a "land of abundance" in the thousands of miles of fertile fields. In 2018, Dujiangyan was successfully selected in the World Irrigation Project Heritage List. Located in the southern foot of Yulei Mountain, Dujiangyan scenic area next to the City God Temple, was built in the early Ming Hongwu. The ten dragon hall in the temple is built on the two sides of a straight ladder, with symmetrical drop layout, the roof cornices are disorderly and orderly, like a flock of geese spreading their wings, giving people the most impression. The building has been included in the Qinghua University architecture materials, and was announced as the seventh batch of national key cultural relics conservation units in 2013. The ancient city west street of guanxian county, north to aba tibetan qiang autonomous prefecture songpan county town of songmao ancient road, the length of more than 700 li, as early as the three kingdom period is the north liangan, qingbian district, south of the western chuan plain business thoroughfare and military main road. Unfortunately, this once more than 700 miles of traffic arteries, now only a section of Dujiangyan scenic area less than 2 km.