According to the needs of national construction, the construction of Hanjiang Water Conservancy Hub Project Danjiangkou Hydropower Station officially started in September 1958. The old city of Yunxian belongs to the Danjiangkou Reservoir flooded area. In order to obey the needs of national key construction, after research and decision by the province, prefecture and county, the Ministry of Water and Power agreed to move the county town to the east and west Jiuligang, Erdaoling, Wuyangling, Beimenpo and Tukengpo on the north side of the old city. In October 1958, the Yunxian Urban Construction Committee was established, with six sections and one office, and comprehensively leading the planning and construction of new cities and the demolition of old cities. At the same time, relocation and construction commands were set up in the party, government, industry, transportation, finance, trade, culture, education and health systems and Chengguan Town, and each grassroots unit established relocation and construction leading groups. The relocation and construction officially began in the spring of 1959. According to the arrangements of the Urban Construction Committee, county-level enterprises, institutions, , production plants and communities in Chengguan area and some residents have successively moved to the new city. The straw rope factory moved to earth pit slope, the chemical factory and explosives factory moved to Beimen slope, the bearing factory moved to Erdaoling, the iron factory ◇Auto Parts Factory 1), printing factory, tractor station (mechanical factory) moved to Dong and Xijiuligang. Most cultural and educational, trade, and administrative institutions were concentrated in the Xijiuligang area.
According to statistics, at that time, 24,826 residents were needed to be relocated, 15,274 houses were demolished, 246,770 square meters of bricks and stones were demolished, 12,000 cubic meters of city wall bricks and stones were demolished, 30,000 cubic meters of river embankment bank protection stones, and 1,800 cubic meters of street stones. The county urban construction committee mobilized and organized a construction army of more than 2,000 people to join the relocation and construction. According to the document No. 17 of the Yunxian County Committee of the Communist Party of China (66): At that time, for such a large work task, why did the old city be relocated and built, how large the new city is, and no force was organized to investigate and study the necessary terrain surveys, address surveys, architectural designs, construction management, financial systems, etc., and comprehensively plan. It simply uses more than 40 units including institutions, groups, schools, residents, factories, mines, enterprises, etc. to move and build on their own, and organizes more than 2,000 citizens and employees to carry out construction. By the end of 1960, more than 1,800 houses had been built.
During this period, the superiors discovered such a blind action and dispatched relevant units such as the Provincial Construction and Engineering Department, the Provincial Survey and Design Institute, the Provincial Architectural Design Institute, the Central South Water Supply and Drainage Design Institute, and the Lifan Urban Construction Bureau to help formulate detailed planning and design. However, due to insufficient understanding of the regularity of new city construction, there is a subjective one-sided nature and a lack of a scientific attitude of seeking truth from facts, the guidance and help that are beneficial to new city construction are not paid enough attention to, and construction will continue as planned. It was not until the end of 1964 that the provincial and vocational offices sent personnel to inspect many times and found serious quality accidents and losses and wasted. After repeated points out, construction was stopped. In this way, after six years of construction of the new city, a total of 3,936 houses were built, with a construction area of 4,102,362 square meters, of which 2,275 were contracted by the county construction company and 1,661 were demolished and built by the people. Among the houses built, there are 466.5 with different degrees of quality accidents, with an area of 11,813 square meters. 152 and 4,082 square meters have been collapsed and demolished. 62 and 1,568 square meters need to be demolished, with economic losses of 259,119 yuan. In addition, the losses and wastes caused by blind command and chaos in funding have reached 580,015 yuan, with a total loss of 839,134 yuan, accounting for about 10% of the total investment expenses allocated.
After a period of rectification, the county government reorganized the Urban Construction Committee and established the Yun County Immigration and Relocation Committee. In 1966, large-scale relocation work began again. However, in terms of the size of the town and the selection of urban site, the Ministry of Water and Power, the Provincial Party Committee, the Provincial People's Committee and the Prefectural Committee, and the Special Commission repeatedly decided at that time: It is still appropriate to take this place, and it will no longer be easier. Resolutely deploy residential areas, living service points, state organs and schools nearby in the east and west Jiuligang area, and the construction of Yunxian new city is still transformed into a rural new city. The scale of city construction should be reduced, municipal construction should be simple, local materials should be used, housing standards should be reduced, make full use of old materials in old towns, demolish original buildings, and do not build office buildings as much as possible, and the natural terrain should be concave with the post. Adapt to local conditions, collective building should be changed to scattered houses, and no main streets or central areas should be built. For the original planned municipal construction projects, resolutely adjust and compress unnecessary. The non-productive population was compressed by 6,000-8,000 people, and moved to the districts and towns of the agricultural frontline and related third-line construction to settle down, and the urban population was reduced to less than 18,000 people.The construction of houses for county residents (including staff dormitories) should be the same as in rural areas. New houses should not be built without brick walls, and dry-burning will be implemented.
In order to implement the above instructions, from 1967 to 1969, 1291 households and 6,509 residents in county towns moved to Shiyan , Wuchang , Jingshan and other places, including 569 Shiyan junctions and 2,793; 625 households and 3,266; 97 households and 450 people in Jingshan. During the relocation and construction of the new city, scientific research departments such as the Provincial Construction and Engineering Department, the Provincial Survey and Design Institute, the Provincial Architectural Design Institute, and the First Exploration Team of the Changzhou Office repeatedly surveyed and identified the engineering geology of the new city and confirmed that the engineering geology of the new city is very unfavorable to urban buildings, especially the sliding of the soil slope and uneven subsidence of the ground. If the surface crack clay is not treated, it will directly endanger the safety of the building. However, since it was in the year of the "Cultural Revolution", during the construction process, there was no basic treatment and no necessary barrier, protection and drainage engineering facilities. Especially in 1969, Danjiang Reservoir was about to store water, and a situation of "using water to drive people away" emerged. In order to resettle residents as soon as possible, the construction of the new city still rushed to make progress and construction period, regardless of the quality of the project, leaving great hidden dangers for the county town.
In September 1969, the Danjiang reservoir area officially stored water and generated electricity, the old city of Yunxian was flooded, and the large-scale demolition was over. So far, the new city has built more than 12,000 houses of various types, nearly 330,000 square meters, and the total population of the county is more than 20,000, covering an area of 3.5 square kilometers. After 1969, the new city of Yunxian became increasingly solid. The urban roads were based on Dongling Street, Zhongling Street, Xiling Street and Daba Road (Guangchang West Road) connecting Dongling, Zhongling and Xiling as the main roads. The roads were based on the ridge. Houses were distributed along the roads on the slopes on both sides of the ridge, arranged in a trapezoid along the contour lines, and were scattered in blocks along the ridge according to the landform units. The county government is located in the Jiagou area between East and West Jiuligang, forming a county town centered on Dongling (Xijiuligang) and Zhongling (Erdaoling).
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