The Shaanxi and Gansu regions reassured Zhu Youxiao, and the place that made Zhu Youxiao feel uneasy was Henan, which was said to be Henan, but in fact it was on both sides of the Yellow River, including Shandong and Hebei, which were frequent disasters.

In history, the Yellow River will flood every few years, in fact, the main reason is that the sediment content of the Yellow River water is too high, and the riverbed is constantly too high, after entering the North China Plain, the terrain changes, and the river also slows down with the terrain and water speed, and a large amount of sediment carried from the middle and upper reaches begins to precipitate, and after leaving the mountainous area, it forms a section of the above-ground river, which is the most dangerous section, and the flood is raging here.

One of the reasons for the comprehensive management of the Yellow River is that the sediment content is too high, and one of the reasons is the problem of the Yellow River's basin, the loess plateau through which it passes is geologically loose, and it is easy to bring a large amount of loess and sand into the Yellow River with the turbulent flowing water when the rainfall hits. Another and perhaps most important reason is that since the rise of the Qin state in the Guanzhong Plain, the economy has prospered, the population has been increasing, and the construction of various large palaces has been frequent, resulting in countless primeval forests being cut down, and the natural environment restoration ability of nature cannot keep up with the perceived destructive ability.

Zhu Youxiao consciously migrated from Shaanxi to the outside world, Yuan Yingtai increased efforts to control the environment on both sides of the Yellow River, coupled with the Xiaoice River period in recent years, the natural precipitation decreased, it is the best period for large-scale management of the Yellow River, so Zhu Youxiao has a plan for large-scale management of the Yellow River Basin.

Since the fifth year of the Apocalypse, Shi Bangyao has presided over the construction of the Yellow River, and every year in winter, he has begun to carry out a large-scale mobilization of the population, paid countless manpower and financial resources, and excavated a large number of auxiliary channels, so that the river water began to flow to the surrounding area, avoiding the flooding of the river in summer.

Since the eighth year of the Apocalypse, the weather has changed suddenly, and there has been no rain almost all year round, and the water canal built by Yuan Yingtai in the Hetao area has a large amount of water, resulting in a decrease in the amount of water since the Yellow River enters the Henan area, and even the flow has been cut off later.

Severe droughts have occurred in the valleys of Shaanxi, Gansu, Henan, Hebei, Shandong, and Huai River, and human power is still very weak for this natural disaster. Zhu Youxiao's disaster relief measures were very appropriate, but they still paid a great price, which further strengthened Zhu Youxiao's determination to harness the Yellow River, so that the river water in the year with sufficient water could be stored and used when the drought came, so as to avoid the occurrence of large-scale drought.

The power of the state began to manifest itself in the power of the state as to whether or not the population diverted from the mountainous areas where drinking water was scarce and whether or not they returned to their original residences, and the relocation of the population that did not wish to return.

Shi Bangyao now summoned a large number of construction teams, Zhu Youxiao asked the household department to allocate a huge amount of funds, increase the construction efforts on both sides of the Yellow River, excavators, transport vehicles into a large number of Yellow River control team, the original riverbed of the Yellow River to clean up, the use of the history of the Yellow River several times to divert the site, the Yellow River after entering the plain into three main rivers, in the west of the garden mouth to dig a large channel, the Yellow River water diversion, the most important thing is to divert the river water to the Hebei region, which is seriously short of water in later generations.

After Yuan Yingtai carried out large-scale treatment in the middle and upper reaches of the Yellow River, the sediment content began to decrease, and the river water became much clearer, and the flow also decreased a lot in the past two years, which fully met the innate conditions for excavating water diversion channels, and would not form secondary siltation in the artificially excavated channels with a large amount of sediment siltation, so as to avoid the siltation of canal water in other rivers.

In the eleventh year of the Apocalypse, that is, the two years after the fourth year of Chongzhen in history, it will be a very heavy rainfall year, not only the capital encountered a major flood, but also the Yellow River still broke at the mouth of Mengjin, causing the Yellow River to flood again. Therefore, Zhu Youxiao must make use of the time spent in the past two years to vigorously carry out water conservancy construction, and strive to fully save up the current flood to cope with the drought in the following years.

In addition to these two places, there is also a more dangerous place, that is, the Huaihe River Basin, which now does not have the kind of strong material base of later generations, so it is impossible to build a large reservoir, and the method of controlling the Huaihe River can only be to control the Yellow River, digging channels, widening the Beijing-Hangzhou Canal, and trying to divert the flood waters of the Huai River to the north, and then try to reserve grain to cope with the upcoming floods.

In addition to the need to speed up water conservancy construction, Zhu Youxiao is also trying his best to build roads. Later generations appeared "want to get rich, first build the road" point of view, in the present is more important, to reach the village through the cement pavement is impossible, but with the continuous development of the Ming Dynasty industrialization, the original dirt pavement is certainly not adapted, can not meet the increasingly developed commodity circulation, in order to further expand the exchange of goods, must build a more solid cement pavement, and now the conditions are also allowed, the Ming household department has enough funds to support the construction of the road.

Zhu Youxiao put forward the issue of building cement roads, and got the support of the cabinet, especially Zhu Youxiao said that with the smooth flow of roads, the commerce of the Ming Dynasty will become more and more developed in the future, and even the taxes of industry and commerce alone can fully meet the national needs of the Ming Dynasty, and even on a certain basis, when the agricultural tax is exempted, the household department Shangshu, who has always looked at the money bag very tightly, directly agreed to pay the overall cost of road construction.

After the discussion of the cabinet and the Ministry of Industry, in the next few years, it is necessary to build two main roads in the north-south direction, one day is along the eastern foot of Taihang Mountain, starting from Jingshi, to Hankou, and finally to Guangzhou, and another road is to start from Jingshi, along the banks of the canal south, directly to Hangzhou. The road from Jingshi to Shenyang must also be built, and this road is also very important, which is very helpful for the control of the entire north, and can also make the material exchange between the north and the south more convenient.

The east-west trunk line is more direct, that is, the Longhai line of later generations, but now the western end point is no longer Lanzhou, but directly prepared to repair to the westernmost part of the border, becoming a real one-day artery, connecting the east to the west, whether it is the eastern disaster relief, or the western war, the Ming army can be quickly mobilized.

In addition to the main road to build cement roads, roads between the various state capitals should also be built, but these roads are not as large as the main arteries, and there is no need to build high-grade cement pavement, just use the triple soil to tamp the line, the road surface is slightly higher than the flat half a foot on the line, because the pavement with the triple soil tamping can be constructed now, unlike the concrete pavement that requires a certain number of technicians.

In order to ensure the quality of infrastructure construction throughout the country, Zhu Youxiao asked the Ministry of Industry to guarantee that at least the main artery should not be less than 20 years under the current vehicle driving conditions, and the Ministry of Industry will use this quality standard to attract investment from construction teams across the country.

Although the current businessmen are still relatively simple, not like the businessmen of later generations of fraud, but it is necessary to set the system well, to avoid the appearance of tofu slag projects, whether it is official roads, ditches, embankments, palaces and other officially funded projects, the Ministry of Industry has asked the builders to erect monuments, indicating what is the reason for the project to be built, what is the standard of engineering design, how much is the expected service life, and finally fill in the main person in charge of the construction project, including his son, if there is a grandson, you can also write the name of the grandson, This method of supervising the quality of the project was called the "Monument of Honor and Disgrace" by later people, and if it reached the standard, it was the honor of several lifetimes. Then there is the qualification and filing system, and the construction projects at different levels are also filed at different levels, and if there is an accident, they will also be held accountable at different levels.