In order to solve the problems fundamentally, the Ministry of Industry has the opinion that the waterways and ditches in the capital should not only be dredged and dredged, but also form a long-term system, so as to avoid the accumulation of small amounts and the need to deal with them in a big way. After Zhao Yu saw it, he felt that it was still necessary to plan as a whole, and it couldn't just be a headache, so it still couldn't solve the fundamental problem.

Zhao Yu consulted the old files, found the city map of Hangzhou after the imperial court crossed to the south, and found that the ancients also had the idea of big planning, and carried out strict planning for the city, but more than 100 years later, with the increase in population and the change of the city, it has not been modified, so that there is a chaotic situation at present.

Lin'an City as a whole is a water town, bordering the Qiantang River in the east and south, and the Grand Canal in the northwest. With rivers as the main trunk, combined with other large and small rivers in the suburbs, a large-scale water transportation network around the city is formed. The overall layout of Lin'an City is to give full play to the advantages of a water town, with Lin'an City as the center, this water transportation network as the main vein, and in conjunction with the Gyeonggi Post Road, it is composed of a series of large and small satellite towns in the surrounding suburbs and the port of Yangpo.

The satellite towns in the suburbs of Lin'an are all built near the river. These towns take advantage of the convenience of river navigation and become an economic bridge connecting Lin'an city with the vast suburbs and surrounding cities. The scale of each town is different, such as Jiangshengqiao and Kuangping towns, and the scale is quite considerable. In addition to the suburban towns of Chixian, there is also the town of Yangpu, which serves as a seaport of Lin'an. Although this town is not under the jurisdiction of Chi County, it is a foreign trade port of Lin'an, and Lin'an City can be directly reached from the Qiantang River. This port town is an important gateway to Lin'an City, and it should become the harbor area of Lin'an City.

There are three main rivers in the city, the Maoshan River, the Yanqiao River and the Longshan River, which are used to maintain the navigation in the city. Later, due to the construction of Deshou Palace, coupled with the continuous encroachment of the houses on both sides of the river, the Maoshan River became increasingly congested, and the water transportation in the city was dominated by the Yanqiao River, which was connected with the Longshan River outside the southern city. After Zhao Yu selected the North Palace as the imperial palace, the Maoshan River was dredged again, but it was difficult to reproduce the scale of that day, and only small boats could be passed.

Roads are not only a transportation line of a city, but also a function of dividing urban functions. Because the shape of Lin'an city is long from north to south, narrow from east to west. In addition, the terrain is undulating and the rivers are crisscrossed, so the layout of urban roads has to adapt to the requirements of these conditions. In Zhao Hao's general view, the structure of Lin'an urban road network is basically planned according to the longitude and latitude map system.

Due to the specific conditions of Lin'an City, there are many east-west roads and few north-south roads. Secondly, the road is tortuous, and even the main road, Yujie, is difficult to straighten. Some arterial roads are even composed of sections and zigzags. As for the spacing of arterial roads, the situation is more complicated, except for some streets and alleys in the western part of the middle section of Royal Street, which are relatively evenly spaced, and most of the rest are far and near.

The main road of the road network on the Royal Street is also the north-south main axis of the whole city's planning, starting from the old imperial city in the north and Ningmen in the south, and reaching the diagonal bridge in front of Jingling Palace in the north. There are four north-south roads that are roughly parallel to Royal Street. One road is longer, and it is the north-south arterial road in the western half of the city. The second and third are in the east of Yujie, between Xiaohe and Taihe, and one is in the west of Yujie, which is composed of two sections. The second road starts from Chaotianmen in the south and reaches the East Chunfeng Building of Zhong'an Bridge in the north. The third is from Zhonggong Bridge in South Wadong to Yanqiao West. The fourth road of Royal Street East goes around Deoksugung Palace from Nam Wadong to Chang Lok Fang in the north. These three roads are the district liaison roads between the east-west trunk road from Qingbomen to Xinmen and the east-west road from Qiantangmen to Dongqingmen, rather than the arterial roads running through the north and south of the city.

There are four east-west arterial roads. The first is the tide gate to the Qiantang gate; the second from the new gate to the Qingpo gate; the third is the new gate to the Fengyu gate; The fourth is from Dongqingmen to Qiantang Gate. These four roads are all arterial roads that cross the Imperial Street and connect the corresponding city gates between the east and west. In addition, because Lin'an is a water network city, there are many bridges on the road. Among these bridges, except for Zhong'an Bridge and Guanqiao Bridge, which are flat beam bridges, the rest are basically arch bridges, and the bridge can be navigated under the bridge.

Since Lin'an was set to be in the country, the Central Plains people who followed Gaozong's clans, nobles, ministers, and military dependents to the south have entered Lin'an. In order to accommodate a large number of people from the south, the original indigenous people had to be relocated outside the city, so that the population of the suburbs in Shaoxing increased sharply in the year. Due to the sudden concentration of a large number of people in the city, and most of the people from the south were royalty, nobles, eunuchs, and wealthy people, it was inevitable that the class structure of urban residents would change. This change will inevitably be reflected in the planning of residential areas.

Lin'an residential zoning can be divided into two categories. The first type is the residence area, which includes the emperor's residence, the royal family and the princes' and ministers' residences, and various official residences are also attached to this category. The second category is general residential areas, that is, residential areas for residents of all classes in the city. And it is arranged according to the square lane production for the settlement planning system. There are not only urban residential buildings in the alleys, but also commercial outlets, forming a unity of the combination of the city and the square.

There are two types of mansion areas in Lin'an City. The first district is in the west of Royal Street, and the second, the district is in the east of Royal Street. The first area has a wide range, starting from Qinghefang in the south, along the Qinghu River to the north, and extending to the south of Wulinfang near Guanqiao. In the meantime, some of the lots are staggered and juxtaposed with local administrative districts and general residential areas. The result is intermittent. The second district is east of Royal Street and Yanqiao River. North of Deaksugung Palace, south of Fengle Bridge, and east of Fengle Fang. The area of this area is small, mainly used as the residence of the royal family and nobles, so this area is relatively neat, and there is no phenomenon of interlacing with other districts.

The general residential area is also based on the Royal Street, which can be divided into two districts. The east of Yujie, the north of Xinmen, and the south of Baiyangchi, a narrow strip between the Shihe River and the Yanqiao River, are the first residential areas. Yujie West, south of Qiantang Gate, and north of Fengyu Gate, between the central business district and the local administrative district, is the second residential area. Some parts of this area are intertwined with the mansion area, so it is not as regular as the first residential area. Outside these two districts, there are also residential alleys in the corner of the city.

Due to the scale of the alleys, the cities of the Song Dynasty were not customized, forming the characteristics of the alleys and commercial outlets. And Fang Xiang is actually the organization and management unit of Lin'an City, there is a box on the Fang Lane, and the box is set up in the Xiang Hall, which still follows the Northern Song Dynasty Baojia system. Among them, you can open shops, set up some industry grassroots outlets closely related to the daily life of residents, these grassroots commercial outlets distributed in the alleys are not only the grassroots organizations of the commercial network, but also a part of the alleys, including schools.

However, the general residential area has a high population density and high building density, and both residential areas are adjacent to the downtown area, so some of the alleys have more shops. Therefore, fire management becomes a crucial issue. Since the establishment of the capital, in order to strengthen the city's fire protection, on the one hand, the width of the streets and alleys has been relaxed, and on the other hand, in front of important buildings and the market where the flow of people is more concentrated, more empty space has been set up as a square. And set up a military patrol shop, and there is also a stone tower collapsed house in the alley to store important items in case of fire for residents. Fang Lane does not build a square table. It is also related to fire protection requirements.

In addition, as the capital of a country and the capital of commerce, Lin'an City must also have a palace area, a central administrative area, a warehouse area, a wharf area, a handicraft area, a cultural and educational area, a city defense area and a scenic area. However, some areas have been adjusted accordingly since Zhao Hao. First of all, due to the malicious destruction of the imperial city by Meng Yuan, Zhao Yu moved the Taixue and martial arts there from the north of the city to here.

In addition, in addition to the renovation of the military fortress around the city, the city defense area concentrated the military camps from outside the Dongjiang River to the old imperial city. In addition, he plans to relocate some of the warehouses to this area. The handicraft area, commercial and residential areas have remained largely unchanged, but these two areas have become the main source of urban pollution and are also the most difficult areas to deal with.

Zhao Yu communicated several times with the Ministry of Industry. He plans to relocate military and handicraft areas because it is not only a pollution problem, but also a threat to the safety of the city. Today's military workshops are no longer producing cold weapons such as bows, crossbows, knives and guns in the past, but involve the manufacture of gunpowder and various explosives powered by gunpowder. In addition, once an accident occurs in a residential area, it is earth-shattering and causes great casualties. He still remembers that a similar accident occurred in the capital of the Ming Dynasty, resulting in the destruction of thousands of houses and countless casualties, as for how it happened has become a mystery.

The handicraft industry is mainly divided into government and private enterprises. The government-run industries included Shaofu, shosho, and printing and ceramics, which were basically industries that served the royal court, maintained the royal needs, and were located close to the court. The private ones are mainly silk weaving workshops and printing workshops, which are concentrated near the residential areas of Sanqiao, Shixifang, Muqinfang and Pengqiao, which aggravate the pollution of residential areas.

After some discussion, Zhao decided to move all the handicraft industry area and military production to the original city defense area in the east of the city, which is close to the Qiantang River and is downstream to minimize the pollution of the city's water source, and the riverside can easily transfer all kinds of materials from the waterway and send them to various places. And he also wants to take advantage of the relocation to refine the zoning, especially the military-related workshops can be used to upgrade, increase the application of new technologies, and increase production.

NextZhao decided to harden and widen the city's main and secondary roads to a width of 30 paces and improve the drainage road system. The project may seem uncomplicated, but it is not easy, because the current phenomenon of street encroachment is serious, and in order to widen the road, those illegal buildings must be demolished first. In modern times, demolition is an old and difficult problem that is easy to intensify contradictions, and it also existed in the Song Dynasty, and the difficulty was so great that it often ended in nothing.

Zhao Yu knew that there was a phenomenon of street invasion in Kaifeng, when the capital was Kaifeng, the street invasion not only made the street narrow, but also caused the street to be tortuous and not straight, therefore, the imperial court started to control the street invasion from these two aspects, on the one hand, the street was straight, and on the other hand, the street must be wide to 30 steps. But as a result, street encroachment has become more serious.

There is such material in the "Continuation of Capital and Governance Tongjian Long Edition": Quxiang in the capital is narrow, (Zhenzong) edict is forbidden to the right, and the only marquis of the pavilion is Xie Dequan Guangzhi. Since the right of virtue has been edicted, the noble mansion will be withdrawn first, and the group will discuss it one after another, and there will be an edict. Dequan asked: "Today's frustrated people are all powerful and wealthy, and they are stingy with their own people, and they don't have it." The minister did not dare to obey the edict. "As a last resort, from it.

Look at the time when Song Zhenzong personally issued an edict to demolish the buildings that invaded the street, but the "noble" big households resisted one after another, and the emperor had to withdraw his order. However, the phenomenon of street encroachment is too serious, especially "those who are frustrated are all powerful", which makes Xie Dequan, who is committed to Guangjiequ, forced him to die. One of the biggest resistance came from those in power, when the most serious invasion of the street was the former prime minister Xia Zhu's mansion, Zhizhou Zhou Zhan was falsely accused of disturbing the people during the rectification, so that he was transferred out of the county and moved to Xiangzhou.

Zhezong Dynasty, Fan Zuyu once wrote to the Song Emperor in the matter, pointing out: "There is a division to destroy and demolish the house too much, the residents are not without a place, although the people invade the street to build a house, destroy it dare not have complaints", thinking that the house was demolished without an order, so as not to cause turmoil and public resentment, the result is that the roads and bridges are occupied by public and private houses, merchants and shops and other buildings, which greatly damaged the urban environment of the Song Dynasty.

After crossing to the south, the phenomenon of street invasion was as good as that of the Northern Song Dynasty. The scene in Lin'an City is "the city is vast, the household registration is complicated, the residential houses are high, the buildings are connected with the eaves, there is no space in an inch, the alleys are congested, the streets are narrow, and it is unbearable." In later generations, some people once said that it was precisely because of the "excessive demolition of houses" that the prosperous commercial scene of the two Song Dynasty capitals appeared. However, Zhao Yu believes that the widespread invasion of the streets is precisely influenced by people's excessive pursuit of money and interests in the Song and Song dynasties, which prospered the economy at the same time, but it has caused the result of urban chaos and disorder, and from the perspective of development, the gains outweigh the losses.

The same results can be achieved by treating the river. According to Zhao Yu's plan, the Maoshan River, which has been seriously silted, will be transformed into a culvert from the Ming River, of course, it will also be dredged, built and covered as the main pipeline of urban drainage, and then the sewage from all over the place will be collected here through the branch road and discharged out of the city.

According to Zhao's vision, this culvert should be done as a project of the century, and the interior should be wide enough to be comparable to the underground pipeline in modern Berlin, Germany. In normal times, culverts can be used for sewage discharge, and in case of flooding, they can also discharge the accumulated water in the city out of the city to prevent the occurrence of waterlogging. Of course, militarily, it can also play a role in defending against enemy water attacks.

At the same time as the urban renovation project begins, it is also necessary to upgrade the residential areas, first of all, to turn the 'earth well' into a 'porcelain well' to prevent water pollution. In addition, regulations such as centralized garbage stacking, removal and transportation, and street cleaning should be carried out at the same time, and a long-term mechanism should be formed. And the problem then arises, there is no urban management in this era, so Zhao Yu still has to consider establishing such a 'great' army eight hundred years ago.

Zhao was excited about the blueprint he had drawn, but problems also arose, first of all, the ministers were not very interested in this costly and thankless project, and no one was willing to accept the task......