To govern the Yellow River, the words of the big one are nothing more than three points, and everyone is like this, ideas, methods, and technologies.

As the so-called time and time, since Jiang Xinghuo has changed history, the current Ming Dynasty and the future Ming Dynasty will definitely be different in many aspects such as economy, technology and productivity.

Therefore, from the point of view of thinking, although it is the best solution to directly pull the Yellow River back from the old road above the hills of Shandong, but considering that for so many years, the Yellow River has seized the Huai River into the sea, and it has long been connected with many water systems that belong to the Huai River, so the diversion of the Yellow River, the restoration of the state of the "big and small Yellow River" in the middle of the Yuan Dynasty, and then the Huai River from the Yangtze River into the sea to correct the status quo, is the rational plan for the first stage of water control.

Wait until the Yellow River diverges and the Huai River returns to its own estuary, and then can we consider the second stage, which allows the Yellow River to return to its own estuary.

The third stage is to build embankments on both sides of the Yellow River to curb the flooding of the Yellow River.

The fourth stage is to fundamentally control the Yellow River, that is, to solve the problem of large amounts of sediment deposition caused by soil erosion in the middle and upper reaches.

Therefore, if it is only the first phase of the water control programme, it is a challenging, but not impossible task under the existing conditions.

In other words, even if more than 100,000 people are gathered for construction, as long as the number of troops is sufficient, the money is enough, and the treatment of the people is not too harsh, then the probability of provoking a civil uprising is not large.

money, Jiang Xinghuo will naturally find a way.

And since the idea is okay, then it's actually a matter of method and technology.

Song Li asked, "Rebar?" Does Daming have that much steel? I've heard that the steel produced by the new steelmaking method is also used for casting cannons, firecrackers, and armor. ”

Jiang Xinghuo shook his head and only said.

"It doesn't take that much."

Subsequently, Jiang Xinghuo explained the principle to Song Li: "Steel bar, as the name suggests, is to use steel as the backbone of the building to provide support for the building and make it more stable and reliable. But in fact, it only needs to be used in key projects, and not all buildings or embankments need to use steel bars. ”

"Of course, even so, there is a lot of steel needed, but the problem is that the iron output of Daming has not been a problem, you should also know that as a franchise commodity, the output of iron has been disproportionate to the amount of use, and now the iron smelted in a year in Daming may be able to be used up for several years in the country, so many iron-smelting fields have been in a state of rest, if there is a water control project, it can promote the production of these iron-smelting fields."

"After all, the iron ingots in the iron smelting yard are all piled up, and as long as the coking coal is enough, the steel needed can be smelted soon, and these steels do not need to meet the same quality requirements as the military, they only need to be strong and durable, so the steel bars can be guaranteed in terms of output."

Modern steel bars, in fact, also originated from the industrial revolution, it is precisely because the steel industry has made great progress, so there are a large number of material conditions for the production of steel bars, and the corresponding technology, has also made a breakthrough, so that modern steel bars have become a sharp weapon in the construction industry.

But in fact, although steel bars were invented in modern times, from the technical principle, the ancients realized a long time ago that this kind of core support is a great help for the stability of buildings.

If you have to archaeology, the history of ancient steel bars, oh no, or "iron bars", is enough to go back to the ancient Egyptian period, when the ancient Egyptians carried out construction projects, they used iron bars that are highly similar to the effect of steel bars, which are used to make building materials stronger, and the technical content of this iron bar is not high, to put it bluntly, it is to melt the iron ore and then send it to the mold and then cool it, and the metallurgical technology level at that time was not enough, and the effect of iron was not as good as bronze.

At the same time, a similar principle was found in Huaxia, but in ancient China, bamboo was more easily obtained, and the toughness of bamboo was used to insert it into walls and columns as reinforcing ribs.

However, because China's copper and iron resources have always been relatively scarce, a large amount of metal resources are invested in construction projects, especially in China, which often requires large-scale construction projects, so it is difficult for copper and iron resources to meet this massive supply gap.

Because of this, Huaxia generally chooses glutinous rice mortar or rammed earth stone two methods to carry out construction projects, the cost of glutinous rice mortar is not low, but if it is a state-led project, it is affordable, and the effect is good, basically equivalent to low concrete. This is because the mixture of boiled glutinous rice paste and lime water will have a very strong adhesive ability, which can even support the building for hundreds of years, such as the construction of the Nanjing city wall, which is used in glutinous rice mortar; As for the rammed earth and stones, that is, the soil is compacted, and then rely on the support of green bricks or boulders to ensure that it is strong, most of the buildings are built in this way, and the main building materials for the construction of the Great Wall in the Qin Dynasty are rammed earth, bricks, stones, glutinous rice and shell mixture.

"And what is cement?"

"Cement, or concrete made of cement, you can understand it as cheap and easy to use glutinous rice lime or glutinous rice shells."

Concrete is not a high-end material, in essence, concrete is the cement as a cementitious material, sand, stone as aggregates, and water in a certain proportion of mixing and mixing to obtain building materials, and glutinous rice slurry mixed with lime water is not essentially different.

Ancient Rome obtained the original concrete material earlier because of the access to volcanic ash, and the ancient Roman city of Pompeii in Italy was destroyed by the eruption of Mount Vesuvius, and it was because of this disaster that the Romans also discovered that volcanic ash can solidify or "freeze" the entire city. From then on, the Romans experimented with mixing lime water with volcanic ash and pouring molds into molds to form original concrete, which they used to build ramps, terraces, and roads.

But this kind of original concrete has two drawbacks, the first is that there is a large demand for volcanic ash, and the second is that the quality is not good, and Huaxia obviously lacks a large amount of volcanic ash and needs high engineering quality, so Huaxia's building materials did not go to this road.

Can enter the industrial age, concrete to obtain and produce, but than glutinous rice slurry is more efficient and cheap, can be called good quality and cheap, because of its good load-bearing and compressive capacity, is widely used in the basic building structure, and concrete with steel bars, is to play a plus one greater than two effect, therefore, reinforced concrete structure has gradually replaced the traditional brick or brick structure, become the mainstream of construction engineering.

"How is cement made?" Song Li was very curious about this, Qin Shi Huang built the Great Wall, using a mixture of glutinous rice syrup and broken shells, and the mixture of glutinous rice syrup and lime water, was invented in the Northern and Southern Dynasties, has been used to this day, if there is a thing that can replace the higher cost of glutinous rice syrup, then for construction projects, especially large-scale construction projects, the significance must be incomparable.

How to make cement, Jiang Xinghuo when he set up a factory, he had an understanding, cement in the modern sense was invented by the British in the eighteenth century, cement was called "ash" after entering China, and Jiang Xinghuo next door, there was an ash factory, at that time Jiang Xinghuo engaged in a chemical factory, did not meddle in the cement industry, but the basic principle is very clear.

Jiang Xinghuo told Song Lidao: "The raw materials of cement are basically limestone, clay, and the slag left over from ironmaking, the principle is to grind limestone and clay into noodles, calcined mature materials, and the remaining slag of ironmaking are ground into powder and mixed, which can be mixed and ground together, or they can be ground separately and then evenly blended, which can be screened out with a fine sieve basket." ”

"Limestone doesn't have to work."

It is indeed not difficult to obtain limestone, after all, the lime firing technology has been very mature for thousands of years from the Northern and Southern Dynasties to the present.

"So why didn't anyone think of getting this cement before?" Song Li wondered.

Jiang Xinghuo said with a smile: "No one thought that coking coal could make steel before. ”

Although it may be a bit unbelievable to say, in fact, this kind of thing does not have too high technical barriers, in fact, it is more of a layer of window paper that has not been pierced. Just as no one thought that by burning coal to make coking coal and then smelting iron, it would be possible to obtain a higher furnace temperature to smelt molten steel.

Now that there has been a breakthrough in steel smelting technology, it means that steel bars are no longer a problem, so the concrete that matches it, as well as the necessary material cement to obtain concrete, can be launched, which is also one of the important projects that Jiang Xinghuo gave to the workshop in research and experimentation, and perfume that can make money is the same priority.

Perfume is made because it must be made in the cold winter, and the reason why concrete did not come out earlier is because cement is easy to do, and concrete also has a "water-cement ratio" ratio formula that requires repeated experiments to obtain.

"The reason why I didn't tell you before is because the cement can already be made, but there is still a key proportion of concrete that has not been tested, but over time, it will definitely not be a problem, this is an exhaustive process, and the time consumed is nothing more than time."

Jiang Xinghuo's "water-cement ratio" refers to the ratio of the weight of water and cement used in mixing cement slurry, mortar, and concrete, which is as critical as the proportion of materials required to make black powder, but black powder also has a mantra of "one nitrate, two sulfur and three charcoal", and Jiang Xinghuo can't remember the specific ratio of "water-cement ratio", after all, he is not a professional in doing this.

Without the standard "water-cement ratio", even if there is cement, it is impossible to obtain solid concrete, but it is likely to get a puddle of mud.

This is because the water-cement ratio affects the rheological properties of concrete, the cement slurry coagulation structure and its compactness after hardening, so under the condition that the constituent material remains unchanged, the water-cement ratio is the most important parameter to determine the strength and durability of concrete, and this ratio is high or low.

Song Li nodded with satisfaction, although he only listened to Jiang Xinghuo's description, he could also roughly imagine the role of steel and concrete, this combination is the same as bamboo and mud to build a wall, but the steel bar is much stronger than bamboo, and concrete is much better viscosity and firmness than mud.

"If there had been cement last year, it might have been easier to control water in Jiangnan."

Contrary to Song Li's expectations, Jiang Xinghuo shook his head.

Jiang Xinghuo only said: "It's useless to just have cement, or to make concrete out of cement." ”

"It's useless?" Song Li was a little stunned.

"Because concrete has a characteristic of cracking, if you say that it is okay to build a house with masonry, but if you want to build a dam or a city wall or a fortress, then you don't have to think about it, and the only way to solve the cracking of concrete is to use steel bars. But the temperature of the front furnace is not enough, and there is no way to obtain steel on a large scale, so how can steel bars be made? ”

Song Li realized that the most important thing was not the cement that was simple to make, nor the concrete that had to experiment with the standard "water-cement ratio", but the steel bar!

But to say that cement concrete is useless, it is not objective, because cement concrete has a great use, that is, road construction, especially long-distance road construction.

In modern times, the cement concrete road in the village will crack after two years, and the driving is very bumpy, this is because the cement concrete will naturally crack, but it is different in ancient times, what were the road conditions in ancient times? Except in the city, there are no stone roads at all, and the outside of the city is full of dirt roads, even if it is the so-called "official road", it is also a dirt road.

And the dirt road becomes a cement concrete road, you don't care what the quality of the cement concrete road is, it is a qualitative change!

Because no matter how bad this cement concrete road is, cement concrete is cement concrete after all, no matter how much rain it falls, it will not become a quagmire, and after how many carriages will crack out of the pit at most, it will not be bumpy to the point that it can't go at all.

The significance of large-scale good road construction materials that can be obtained at a lower price is really too great, if nothing else, let's talk about the speed of information transmission, if there is a cement concrete road from Beijing to Nanjing, this road is normally 2,000 miles long, and the highest level of 600 miles expedited in the past took more than three days to arrive, and now it is estimated that it can be accelerated to more than two days.

And in addition to this, large-scale marches, long-distance trade, transportation of grain. The efficiency improvement that concrete cement roads can play is very considerable.

Moreover, the territory of the Ming Dynasty is vast, and if a few more roads can be built, then the traffic conditions will be improved, and the control over the place can be greatly improved.

In addition, reinforced and concrete could address the immediate need to defend against a possible invasion by the Timurid Empire.

Jiang Xinghuo couldn't be sure if the old cripple would be the same as in the history of his previous life, and he would die halfway, but even if he planned for the worst, he would build a group of fortresses in the Hexi Corridor of Gansu from the second year of Yongle, and it should be repaired in the fourth year of Yongle.

With the fortress group, the Timurid Empire's return cannons (counterweight trebuchets) and large-caliber artillery will not work, and they can only sigh under the fortified city.

Labor expedition, the army is in a dilemma under the fortified city, this is a big taboo for soldiers, you just replace Zhuge Liang, in the face of the insurmountable Chen Cangcheng, you also have to retreat, right? This has nothing to do with the level of the commander, even if the old cripple is not dead, the difficulty of facing this reality should be enough for the Timurid Empire to retreat.

After all, it's not like you can nibble down one and it's over, as long as there are enough supplies in advance, the more you fight, the more difficult it will be.

Song Li didn't know what Jiang Xinghuo was thinking at this time, he just asked, "What's the matter with that bundle of water rushing to the sand?" ”

Song Li was very curious about this unheard-of method of water control, but he had already guessed some information from what his name revealed.

According to the inherent experience of water control, if you want to control the rivers that are easy to flood, the most important method is still the set of Dayu, that is, the diversion, but the effect of this is too poor for the Yellow River, because whether it is to widen the downstream channel of the Yellow River that is now seized into the sea, or to dredge and excavate other river tributaries, although it can slow down the water potential when the flood occurs, so that the pressure of the embankment can be reduced to avoid the risk of bursting, but the problem is that the situation of the Yellow River is very special.

In fact, the main reason for the dams of the lower reaches of the Yellow River is that the sediment accumulation leads to the elevation of the riverbed, if the "canyon relativity theory" is used to explain, that is, the elevation of the riverbed is equal to the lower of the dikes on both sides, and the dikes become lower when it rains, and the dikes are easily washed away, so the root cause of the downstream Yellow River is sand control.

And how to control sand, Song Li vaguely touched the threshold.

Jiang Xinghuo directly opened the door of the new world to him.

"This method just provides you with a method idea, because the current cement concrete cannot dry quickly, so the cement concrete can only be used as an auxiliary. The method of water and sand washing, also known as the method of water attacking, is to tighten the river channel, use the impulse of water to impact the sediment at the bottom of the riverbed, so as to achieve the purpose of dredging and flood control, mainly for the Yellow River, which is not enough water flow, but the sediment content is so large that the riverbed is constantly silted. ”

Song Li thought about it and understood, if you want to control sand, the way to remove the root must be to control soil erosion in the middle and upper reaches, but this thing is not a few generations afraid that it can't be done, what can be done in front of you is to treat headaches and pain in the feet, since there is a lot of sediment, try to reduce the sediment, because the sediment is carried by the Yellow River water, and if the Yellow River water is diverted, although the flood disaster will be reduced, but the problem is that there is less sediment, but it will accelerate the sediment to form a large area of silt. On the contrary, if the water of the Yellow River can flow at high speed, it can change the current situation of sedimentation, even if it cannot wash away all the sediment, which is the real principle of the water and sand flushing method.

Jiang Xinghuo continued to explain to him in detail: "The method of restraining water and flushing sand is the 'four embankments'. ”

"The first embankment is the main embankment, which is the commonly used flood control embankment."

"The second embankment is the remote embankment, that is, another embankment is built behind the main embankment, and once the main embankment collapses, there is a remote embankment, which is regarded as an additional insurance."

"The third embankment is the silt embankment, because the river water will hit a part of the sediment on the main embankment on both banks, so you can build a small, bamboo-based structure brush embankment on the silt on both banks to block the silt and prevent it from returning to the river."

"The fourth embankment is the inner embankment, which is built in front of the original flood control embankment, that is, in front of the silt embankment, which is used to artificially restrict the flow of the Yellow River and make it more turbulent."

"The mantra is that if you want to go deep in the north, then the south is its embankment and the north is deep; If you want to go deep into the south, you should go deep in the north and the south from the south; If you want to go deep, then the north and south embankments are bundled together, rushing to the middle, and the middle is deep. ”

After hearing this, Song Li was stunned in his chair and did not recover for a long time.

After a long time, Song Li got up and saluted Jiang Xinghuo.

"The national teacher is profound, and he admires it!"

This theory of "four dams" had a great impact on Song Li, and this theory of river control established by the idea of system engineering, combined with the emergence of reinforced concrete, can undoubtedly change the relatively inefficient situation in the past.

Although it is not a difficult thing to understand, the idea is very ingenious, and Song Li can't think of it anyway.

And Jiang Xinghuo himself is not engaged in engineering, but he can think of this method, which makes Song Li, a professional, feel very ashamed of himself.

But fortunately, this is Jiang Xinghuo, as an immortal, what can he propose, although everyone is surprised now, they are not particularly surprised and they are numb.

But only from the point of view of the method itself, in fact, Pan Jitao's method of attacking the sand with water was very high in Jiang Xinghuo's previous life, this method of water control is great, and it has been used for hundreds of years since the Ming Dynasty, and it is a method of water control that has been proven to be effective in practice.

Chen Huang, an expert in river control in the Qing Dynasty, also followed this line of thought to govern the Yellow River, and he once said that "Pan Yinchuan uses embankments to restrain water and brush sand with water, which is really the principle of nature, and it is not a delicate theory at the beginning. Similarly, Li Yizhi, a modern water conservancy expert, also commented on Pan Ji's taming of the river: "If the Huanghuai River is combined, the only way to control the river is to cultivate the embankment and weir is the task, and the great harvest is to be tamed by Pan Gongji, and Pan's embankment is not only to prevent floods, but also to bind water and attack sand, which is well aware of the principle of governance."

Governing the Yellow River is not only an important achievement of Zhang Juzheng's reform, but even after the fall of Zhang Juzheng, Pan Jitao continued to govern the Yellow River, he ruled the river four times before and after, and finally through the thousands of miles of embankment stretching for three political envoys, the two banks of the Yellow River were sandwiched, so that the direction of the Yellow River began to stabilize, changing the situation of going east and west for a while, and the achievement was unprecedented. However, if we look at the overall situation, that is, the Yellow River is regarded as a whole, it still does not play a fundamental role in reversing, because the Yellow River has a lot of sediment because of serious soil erosion in the middle and upper reaches, which is not something that can be accomplished by the people of this era, and the later history has also proved that after this great method has been basically stable for hundreds of years, the Yellow River has begun to break and divert its course continuously.

"Then it is to use bundles of water to wash the sand, plus to store Huai and brush the yellow, and control the Yellow River in a two-pronged way?" Song Li asked.

The idea of accumulating Huai and brushing the yellow has always been mentioned, because now the Yellow River is seized into the sea, and it is the intersection of the Yellow River and the Huai River in Hongze Lake, and the so-called "Huai Huang is to build a dam in Hongze Lake to prevent the flow of the Yellow River from entering Hongze Lake, and then a large amount of Huai River water is poured into Hongze Lake to raise its water level, so that Hongze Lake, a lake that carries the water of the Huai River, is stronger than the Yellow River, so that the water of the Huai River can flow backwards into the Yellow River through Hongze Lake, and the Hongze Lake carrying the water of the Huai River is a clear water lake, and the sediment content in it is very small. In this way, the water of the Huai River can be used to wash the Yellow River.

Jiang Xinghuo shook his head and only said, "I'm afraid it's not okay to accumulate Huai and brush yellow." ”

The effect of the method of "storing and brushing the Yellow River" is certainly there in the short term, but in the long run, the effect is actually very unsatisfactory, because the Yellow River is strong and the Huai River is weak, and the inundation area of the Huaihe River basin is expanded after the accumulation, which causes the Yellow River water to be poured into the Huaishui water storage area, resulting in the problem of waterlogging directly. In Jiang Xinghuo's previous life, in the Jiaqing period of the Qing Dynasty, the six dams of the Huai River were raised infinitely, exaggerated to the point that even the sub-weir on the embankment has been superimposed to more than five feet, which is impossible to be higher, and in this way, Hongze Lake, which undertook the main task of storing Huai, its perennial water level often reaches more than two zhang, and once it rains heavily, it will break the embankment, so it can be said that "accumulating Huai and brushing yellow" has completely failed.

When Jiang Xinghuo was running the factory, when he was reading the newspaper, he saw an editorial by the industrial pioneer Zhang Zhuangyuan, and he talked about the problem of the Huai River, and he was very impressed by this, because he said it more thoroughly, and it was written in the newspaper at that time.

——"To the Ming Dynasty to build a high weir, and the Huanghuai and not again, for the benefit of the drama, trapped in Sizhou, immersed in Hong County, abandoned Linhuai, forced to migrate to Qinghe, Pizhou, when the time overflowed Xu Hai, invaded Gaobao, the former Qing Dynasty opened the country for more than 200 years, almost no peaceful years, now the high weir, cross-cut its downstream, and lost the old road, and up and down the two rivers, Xu suffered from the poison Huai Xu chaos, related to the safety of the world. And the ignorant shallow man, panic to make up for the yellow of the high Yang, in order to raise the soup to stop the boiling, all the small techniques of pouring the pond and building a weir, its skills are gradually poor, and its invisible disaster has become, and still obsessed, do not think about the strings and change it, can be for the crying people also. ”

Looking at Song Li's expression, Jiang Xinghuo knew that the idea of "accumulating Huai and brushing yellow" probably had risen more than once in the hearts of those of them who controlled the water.

This method is perfect from the simulation point of view, and it can be self-consistent, in line with the basic logic of water control, if it is only by deduction, it is difficult to prove that it is not good.

Jiang Xinghuo sighed and asked, "Do you have a pen and paper?" ”

"Yes."

Song Li took out the paper from the drawer of the other table and gave Jiang Xinghuo ink again.

Jiang Xinghuo picked up a pen and sketched patterns and formulas for him on paper.

The formula is not a difficult thing, it is the simplest Bernoulli principle in fluid mechanics, and it belongs to the level of middle and high school physics.

"This is the speed, this is the pressure."

In a stream of water or air, if the velocity is small, the pressure is high, and if the velocity is high, the pressure is small.

Jiang Xinghuo didn't use symbols, he went directly to the text, Song Li saw it very clearly, and the word speed didn't need to be explained, the word "pressure", Song Li had heard what Jiang Xinghuo meant, and he had also read it in the article on the principle of hot air balloons in "Ming Pao", and it was not difficult to understand.

"But the fluid in the ideal state is certainly not the same as the complex reality, in fact, the flow of the river water is not the same in the cross-section of the river, and the flow speed of the water near the bank and the bottom of the river is smaller than the flow speed of the water flow on the surface of the river."

"Therefore, the accumulation of Huai and the brushing of yellow is theoretically perfect, but in practice we can't do it in detail, since the speed and pressure are inversely proportional, then the speed in the river is inconsistent, will there be a pressure difference? If it is a river, of course, it is easy to say, because the flow rate at the bottom of the river is less than the flow rate on the surface of the river, so under the action of pressure difference, the water flow fluid will flow from the bottom up, and the sediment will be rolled up, which is the scientific principle of the 'water flushing sand method'. ”

Before Song Li could react, Jiang Xinghuo said again: "But do you think the situation in Hongze Lake is like this?" It is true that lakes and rivers are close to the banks and bottom of the river and the flow speed of the water flow is smaller than the flow speed of the water flow on the surface of the river, but the problem is that the surface flow of the river is finite, while the surface flow of the lake can be regarded as almost infinite, guess what, in this case? ”

Listening to Jiang Xinghuo's words, Song Li fell into deep thought.

Yes, the flow speed of the river is very fast, so according to the different flow speeds of the surface and bottom of the river, and on both sides of the river, there will definitely be a pressure difference, but if this pressure difference is put in a wide lake, is it still the same thing?

"I'll tell you what factors affect the speed of the river."

Jiang Xinghuo wrote on the paper, the radius of the water flow, the area of the water body, and the density of the water body, a total of three factors.

With Jiang Xinghuo's words, Song Li's expression became more and more enlightened.

His brain was thinking rapidly, since the flow rate of the river was affected by these three factors, then in fact, he could know without Jiang Xinghuo saying that it must be that the smaller the radius of the water flow and the smaller the area of the water body, the faster the flow rate, the simplest reason is that the water gun made of bamboo tubes, the water flow speed from the holes pierced by the bamboo tube is definitely faster than the water flow speed of directly splashing a basin of water.

Therefore, the speed of the water in the turbulent stream is also much faster than that in the gentle lake.

As for the density of the water body, he doesn't know much about it, but when he thinks about it, the water density of the Qingshui River and the Turbidity River should be different.

"And these two are the influencing factors for the sediment flow rate."

Jiang Xinghuo wrote again, the roughness of the riverbed and the density of sediment.

"The flow rate of the river, if it can be greater than the sediment flow speed, then the sediment can be swept away by the river, now you analyze according to these conditions, by storing the water of the Huai River into Hongze Lake, and then pouring into the Yellow River, can it really play the role of 'brushing yellow'?"

Song Li closed his eyes in some despair.

Because the answer is already obvious, it can't be.

It's like there's a puddle of dry mud on the ground firmly stuck to the ground, and you use a water gun made of bamboo to draw water from the basin, and then aim it again and again, and then slowly flush it, maybe you can even loosen it, and then shovel it away.

But if you splash it up with a basin of water, it will most likely turn the dry mud into a little moisture mud, and the mud is still on the ground, except that your basin of water has become muddy, and nothing else will change.

"What then?"

Jiang Xinghuo shook his head, and only said: "No way, don't think about 'accumulating Huai and brushing yellow', honestly use the method of water and sand washing, build embankments on both sides of the Yellow River, and build reinforced concrete in key parts to restore the channels of the Yellow River and the Huai River to the correct position, as for the vegetation restoration in the middle and upper reaches, it was caused by hundreds of years of indiscriminate felling in the Song Xia and Jin Yuans, and it can only be slowly restored." ”

Song Li breathed a long sigh of relief, no matter what, it seems that harnessing water and attacking sand is the most effective method at the moment, which can solve the practical problems of controlling the Yellow River in the first to third stages.

Jiang Xinghuo also thinks so, not completely handed over to future generations, but now some things really can't be done, as for the future, then we have to wait for the Ming Dynasty's science and technology to be more advanced, and the economic volume will increase several times, as long as the science and technology are advanced enough and the economy is strong enough, then large-scale infrastructure projects are actually not difficult for a big country like Daming, as long as the objective conditions allow, there is nothing that cannot be done.

"The matter of cement concrete and steel bars, I will focus on it next, these basic conditions will definitely be able to be implemented next year, large-scale production is not a problem, as for the difficult task of controlling the Yellow River, you want to do it next, it depends on you. But if you want to promote the book, especially the Ministry of Industry, I am afraid that it will not work if you don't have a project to get your hands on, and building Beijing is the work of Guo Zi, the secretary of the Beijing Department, we can't grab this, and the only way to do it is to repair the Yellow River, this is a big job that Song Jinyuan has not done for many years, enough to go down in history, and now there are new methods and technical conditions, you still have to think carefully. ”

Jiang Xinghuo said sincerely, and Song Li listened to it tangled.

Of course, he wanted to be promoted, and he wanted to take his left squire a step further and turn him into a scholar.

However, the work of repairing the Yellow River is not easy to do, it is one of the most difficult projects in ancient China, as long as it is next, it is destined to live on the construction site in the next few years, and the degree of destruction of people's entire body and mind is not something that ordinary people can bear.

Hundreds of thousands, hundreds of thousands of people's clothing, food, housing, and transportation, negotiations with three or four political envoys and dozens of local governments and counties, thousands of miles of projects are carried out in stages, and countless emergencies that may occur. To put it mildly, there were so many civil and military people in the Manchu Dynasty, and after selecting the two necessary conditions of having experience in large-scale water control projects and being strong and energetic, there are really not many people who are screened, maybe except for Song Li, Pingjiang Bo Chen Xuan can do this job.

"I'll think again."

Song Li still couldn't make up his mind on the spot.

Jiang Xinghuo put down the pen and paper and patted him on the shoulder to show understanding.

I really have to understand that they are all officials in such a high position, and if they agree directly with a hot brain, it is immature.

Among the six ministries, the Ministry of Officials, the core department that holds the personnel power, it is impossible for the emperor to let him control or interfere, and the Criminal Department controls the judiciary, which is the same reason.

Therefore, if Jiang Xinghuo wants to expand his power, he can only go to the Ministry of Engineering, which is in charge of construction projects, and the Ministry of War, which is theoretically responsible for the military.

But in fact, under the temple pattern in the early Ming Dynasty, the Ministry of War was the most powerless department among the six departments, just like a rubber stamp of the Governor's Office of the Five Armies, only responsible for issuing documents, and the real power was in the hands of the Governor's Office of the Five Armies.

In this case, Jiang Xinghuo's best choice is actually the Ministry of Industry.

In fact, the most involved in the change is indeed the Ministry of Industry, whether it is water control, road construction, or gun and cannon building, and even many industrial projects, these are closely related to the Ministry of Industry.

If the Ming Dynasty wants to carry out the industrial revolution, it is naturally inseparable from the work of the Ministry of Industry.

At this moment, Song Li suddenly asked, "National Teacher, in fact, there has always been a question that I haven't asked you. ”

Jiang Xinghuo was slightly stunned when he heard this, and then smiled: "You ask." ”

"I want to ask, what do you think about the future of the law change? Or rather, what do you want the world to become? ”

Song Li said frankly: "In fact, when I saw you fighting on Taiping Street, watching you pray for rain and thunder on the altar, and watching you slash corrupt officials in Changzhou Mansion, I have been thinking about it all these times. ”

"I've been thinking about it too."

Jiang Xinghuo said in a rare relaxed attitude: "I, while walking, while watching, I think that sometimes I feel that I have done enough, and sometimes I feel that I have not done enough, do you think it is strange?" If you look at the long term, you won't be able to see the things around you, and if you look at the perspective of a high level, you won't be able to see the life in the dust. ”

"Actually, I'm not afraid of your jokes, although the Rongguo Mansion is the most simple in the mansions of all the princes, but there are still hundreds of people in the whole mansion, but I still have the butlers, servants, account rooms, servants, servants, and cooks in the Rongguo Mansion. I can't remember any of them. ”

"I used to read a fragment of a book, called "Dream of Red Mansions", which depicts the life of flowers and poverty and luxury on the Guogong Mansion, I see the Wei Guogong Mansion and the Cao Guogong Mansion, all of which are like this, but sometimes I think about it, just in a big mansion every day talking about the shortcomings of the east and the west, hugging this son and that girl, from the master to the servant intrigues, all bribing and planting for their own interests, is it really interesting? Am I going to live this life, enjoying being surrounded by others, enjoying the honor of being treated as the supreme master? ”

Song Li was silent, although he can do practical things, but he is not a perfect gentleman in the true sense, he can be called a capable minister, but he cannot be called a Qing minister.

And Song Li yearns for the kind of life that Jiang Xinghuo said, so many people in this world, the vast majority of them are troubled by food and clothing, who doesn't want to become the prince of the country at the top of the noble class?

Song Li has actually seen a lot of people, through the imperial examination or in business, after suddenly having resources that they couldn't have before, they turned their heads and became the kind of person they looked down on before, to put it bluntly, it's not that they hate that kind of person, but that they don't hate that kind of person.

"The world I want to build is not the world I want to build."

"Will it work?" Song Li didn't believe it.

"I don't know, but it's like an old saying, know etiquette and etiquette, and ask for moral improvement, you have to make Daming far beyond other countries, this is the meaning of changing the law, and changing the law can change everything now, so that science and technology and economic development can be developed, and with enough resources and capabilities, the world has the possibility of evolution."

"How can you expect a cicada chrysalis that doesn't take in enough nutrients to transform into a butterfly with flapping wings?"

Honey Ji's new book "What do you fall in love with when you have cats" - a cat that has been raised for a year can suddenly become a cute cat-eared girl, how should Ai Qing, who has no intention of falling in love, be good? (Single female protagonist dog food text)

(End of chapter)