The reason why Ma Jun and his Western Regions strange friends made Li Su technically think more and more feasible is that they are very consistent with the actual geographical environment around Luoyang.

The biggest difficulty in using water in Luoyang New City is that the location of the new city is much higher than the water level of the Yiluo Water next to the new city. The cost of drawing water from the river is too high. It is necessary to use more than one million people. It is impossible to rely on water trucks to carry or even buckets.

However, there is a blind spot here. Even Li Su and Zhuge Liang did not expect that the water level of the Yiluo Water was low. This is not always the case.

As long as you trace the upstream for more than a hundred miles, you can find that when the Yishui River flows out of Funiu Mountain and enters between Funiu Mountain and Mang Mountain, it is sandwiched by the mountain at Longmen Yique. The water level upstream is still very high, and the absolute altitude drop can be dozens of feet higher than the point where the downstream flows into the Yellow River.

When I rushed out of Longmen Yique through the mountain, I lost a lot of drop and kinetic energy. In just ten miles of Longmen Valley, the drop dropped by more than 20 feet. After leaving the mountainous area, I entered the Heluo Plain. There was almost no drop in the next 100 miles, which was very smooth.

The core idea of ​​building elevated canals in Roman style is to "try not to waste the natural gap between rivers and water sources."

If there is a thirty-foot drop, it will be allocated to a river channel of more than 100 miles. Under natural conditions, twenty feet will be spent on the first ten miles, and the last hundred miles will be divided into ten feet.

After the elevated canal is built, the river water cannot drop rapidly in the first ten miles. It is necessary to save some money, only two meters. The eighteen meters saved will be distributed to the subsequent 100 miles. In this way, each section of the flow rate will be equally stable.

This kind of micro-operation was difficult to achieve in ancient times. The Romans were actually not very accurate, but it was enough.

Players who have played the Italian background map of the "Assassin's Creed" series should be familiar with the appearance of the ancient Roman elevated canal ruins, and know the roughness of the drop.

What really grasps this kind of operation accurately in modern times is China's "South-to-North Water Diversion" project.

The South-to-North Water Diversion Project in later generations made the Han River break through Tongbai Mountain from the Fangcheng Pass in Hubei (that is where Li Su is now going to repair the Bowang-Ye County-Kunyang Canal). The water level is 147 meters, and the water surface altitude of the reservoir at the end of Beiping City is 49 meters.

The total is only 98 meters, which is equivalent to a 42 z. The engineering technology in the 21st century must achieve the feat of allowing the river to flow 1,300 kilometers away. That is why a slight natural gap cannot be wasted.

Even the difficult point of "painting yellow project" is only given to you a drop loss amount of 7 meters.

(The water of the Han River passes from the bottom of the Yellow River. Before crossing the river, it is much higher than the surface of the Yellow River. It falls rapidly and passes through the bottom. After crossing the Yellow River, it must be lifted back. It is equivalent to the principle of a communicator. You cannot allow the water level to fall lower than the surface of the Yellow River. The pressure loss of this "communicator across the Yellow River" is only 7 meters.

Because if the water level remains low after crossing the Yellow River, it will be lower than the altitude of Beijing and cannot continue to flow northward. The last 500 kilometers from Xinxiang to Beijing must be relied on the back lift of the communicator to provide self-flow power.)

In contrast, the technology that Li Su is now trying to discover is only based on the survey and design accuracy of the Romans to achieve "a 20-meter drop for a 120-mile river channel. The water surface drop speed throughout the whole process is uniform, and each section of the elevated stone canal is accurate to a ruler", which will be much lower.

(The precise requirement for the altitude scheduling of the South-to-North Water Diversion is not accurate to the ruler, but to centimeters)

What's more, Li Su did not do any exploration of digging canals to repair water conservancy in the early years. He used plumb and simple bubble level, and used trigonometric function-related equal-equivalent observation brackets and telescopes to create a "earth altimeter" that far exceeded the original "altitude measurement" subject in the late Han Dynasty.

Li Su's altitude and high surveying technology accuracy can basically reach the level in the middle of the Age of Discovery and before the Industrial Revolution.

Otherwise, how dare he propose to build the Nanyang-Yingchuan Canal? Otherwise, how dare he excavate and blast, and guide the Western Han River to the north to rush towards Chencang City?

Li Su's use of water level and altitude is originally accurate to the status of one person in the world, and far exceeds the second place on Earth during the same period.

However, some of his previous deeds, such as "Gaozu asked his dream of Liu Bei, and the earthquake caused Hanyuan to change the way" were considered to be miracles of destiny. No one interpreted the scientific principles in it, and did not dare or had the opportunity to interpret it. They were kept secret.

So people don’t know how awesome Li Su is in geographical surveys, and some of his early achievements were attributed to God.

Others are "greedy for the achievements of heaven for themselves",

Li Su is "the merit of hiding oneself and entrusting heavenly existence."

...

So the problem became: the cost of the elevated part was at least 4 billion, plus the cheapness of the mountain repairs, no overhead part, plus the measurement fee, precise design and surveying, the entire project was at least 5 billion!

But after building it well, the benefits are also very obvious. It can solve the problem of water use in the capital for at least a few hundred years, and allows the capital new city to completely avoid the risk of compromise in floods and waterlogging when choosing a location.

It also allows the capital to choose a site without occupancy of surrounding arable land suitable for irrigation, and choose a location that is relatively convenient for Kanto’s canal material support... These benefits can be harvested.

You should know that if you occupy less arable land around Luoyang, the value is not comparable to the same area of ​​arable land in the distance. The value difference here is at least two or three times.

The reason is also very simple: According to Zhen Mi's previous experience in farming in Chang'an and underwriting fresh vegetables for the people, the land around megacities can grow all vegetables in the future, and farmers' own food rations are transported outside. They are only responsible for providing fresh vegetables that are difficult to store and transport for long distances.

If there are not enough fields next to Luoyang, there will be millions of people here in the future, and the 20 million acres of fresh vegetables are planted on the Heluo Plain, which is not enough for the local people in Yin, Henan to eat, and Luoyang people will fall into the inversion when it comes to eating vegetables.

Vegetables will rise to the price of "making the poorest people in Luoyang give up the idea of ​​eating fresh vegetables because they can't afford it." This will rely on the invisible price leverage of the market to suppress the demand of the poor.

If you want to transport vegetables from outside Hulao Pass, I'm sorry, the ships have been refueled several times, docking warehouses and waiting for ships... These all take time. If you delay a few more days along the way, how much will it rot? Perhaps most of the vegetables transported from sour jujubes will rot. Unless they are made into pickles, the loss will be greatly affected when transported.

This is the extra valuable thing about the farmland around megacities. It provides the only solution for megacities citizens to "eat local dishes" as a must. Before the emergence of refrigeration and preservation technology, it was crucial to the living standards of the people in the capital area.

Therefore, if a city with a population of one million, choose a location to a dry place in a high place and give up the arable land in the river valley, the income is definitely not as simple as so much arable land on the book, and it takes several times more than it will be.

The price of all this is to spend 5 billion to build an elevated road! A bridge flies north and south, flows through the original Yiluo River, from Funiu Mountain on the south bank of the river valley to Mangshan on the north bank.

The water level that should have fallen rapidly according to the laws of nature is forcing it not to fall immediately, and hold it up with a stone elevated stand to save the last 90% drop to the hillside of Mangshan before falling orderly. The drop is used at the knife edge!

In addition, the Yellow River water is basically not available. If this option is not unexpected, you don’t need to consider too much. Because the Yellow River water goes up from Xiaopingjin Ferry in the upper reaches of Luoyang’s old city, after leaving the canyon, the water flow is very smooth, and the gap available for use in the short distance of the Yellow River is not large.

To divert the Yellow River water from the elevated road, you have to divert it from Xiaopingjin to the upstream, which is equivalent to the "Xiaolangdi Reservoir" in Mengjin County, Luoyang in later generations. This distance is farther than diverting Yishui from Yique, which is even higher.

Moreover, the Yellow River water is also relatively turbid when it reaches the lower reaches. Although the Beidi County and Shangjun in the late Han Dynasty have not been destroyed into a completely Loess Plateau, the Yellow River water is definitely not as clear as the Yishui River in the Funiu Mountain section (the water quality of this section of Yishui can be seen in the later Luoyang Longmen Grottoes Scenic Area, which section is it)

In this regard, Li Su also tends to let the people of the capital try to drink clean water in the future. In the early stage, he will spend more money.

In the 21st century, in the shore of the East China Sea, Wuyue Province, in order to ensure that "let the people of the provincial capital drink high-quality water", was not too far away, and from Qiandao Lake Reservoir upstream of the Qiantang River, it directly built an elevated dedicated water pipe to Qiantang City, which is the water intake area where "Nongfu Spring is a little sweet". There are countless administrative decisions to consider.

However, since it is a thousand-year plan, for the sake of safety, if Li Su decides to implement it, he will allocate an additional cost of geographic survey and inspection and find many professional surveyors to accurately calculate the feasibility of the Huang-Yi plan.

Five billion is spent, and the design survey fee is not short of hundreds of millions of yuan. Of course, you must choose the most realistic and best solution and not make decisions. You must also fully respect and affirm the value of designers and surveyors.

Of course, I finally decided to build an elevated channel. During the subsequent use, I would also have to pay some daily cleaning and maintenance fees every year, but this money is definitely very cheap compared to the construction cost.

After all, let alone the Roman Empire, even the stone elevated canal built in the Roman Republic hundreds of years earlier. Until the era of Assassin's Creed Uncle Ai, most of the remains were preserved on the eve of the great voyage. People who traveled to Italy in the 21st century can still see some.

As for a solid stone arched building, as long as you don’t deliberately destroy it or maintain it, it will be normal for a thousand years to not fall.

Now, the key to all decisions is to return to the question of whether to pay the 5 billion yuan and when can I pay it out.

While Li Su was hesitating to think about the technical details, Zhuge Liang, who had a big view of the situation, reacted first, and Zhuge Liang persuaded him very decisively:

"Mr. Li, you are hesitant. Do you think there are major technical questions about this plan?"

Li Su came back to his senses and carefully evaluated: "There are some small questions, not big, mainly the money problem."

Zhuge Liang waved his hand and asked Ma Jun to retreat first, and at the same time, he asked the worker Cao to take up Huanjie and retreat, and could not listen to the subsequent confidential conversations.

Then Zhuge Liang advised him directly: "Since you are just worried about money, then finally finalize the site selection of the new city. You also said that this is something that you will only worry about after millions of people in the country in the future.

Now that you have just built a new city, you may not be able to complete it in the first year. Just built it, and in the first two years, it was only 100,000 or 200,000 people lived there. When there are fewer people, it is easy to use water to solve it, so that the people can find their own solutions.

Since we are technically sure, we have a bottom line to protect the situation and are not panicked. As mentioned earlier, Luoyang has a larger population and His Majesty moved the imperial court back at least three years later.

With Yuan Shao and Cao Cao's current situation, the Yuan family will definitely be destroyed in three years. It is not easy to guarantee whether Cao Cao can clean up. But then the financial pressure of the court will definitely be much less than that now, and the military expenditure can be reduced compared to the peak.

At that time, will the court be afraid that the 5 billion yuan will not be able to come up with it? And it will take it out in less than a year. This kind of project will definitely be studied step by step for several years.

I think it's not time to dig rivers and splice elevated roads, but the forty-mile stone sinks of the elevated roads need to be processed. I don't know how many hard mountains you have to pick and how many stonemasons you use. I'm really ready to repair them, but the money from the previous year or two won't help much.

I can only use it to buy and carve these stone sinks first and save some parts. In the last year, all the funds will be in place, and then dig trenches and lay foundations and build bridges and splicing them."

Zhuge Liang's meaning is very clear: the key to this plan is to give everyone a way out and know that the new city will be selected on a gentle hillside and high platform. There is no problem and can be remedied in the future.

Since this is the case, remediation can be made up at any time. If the conflict accumulates to that point, if it is not remediated, public grievances will increase. It will be too late to pay for it. You should do what you should have done first!

I feel unhappy when I have a trump card.

Zhuge Liang saw that Li Su was still thinking, but he didn't know that Li Su was thinking about technical details, so Zhuge Liang said with great courage:

"If Mr. Li has other concerns, it can be said that the students instigated him to promote this supporting project as Henan Yin. If it is in the end, the results will not work, the students will bear it with all their strength."

Zhuge Jin hurriedly said, "Second brother, what are you talking about! You have the resources of great wise men and will be a person who will help the people in the future. How can you take risks with your future? Brother Yu is just a dull and moderate talent. These new cities are the responsibility of me, the Minister of the Ministry of Civil Affairs, and what happens is also the responsibility of brother Yu."

Li Su was a little angry when she heard it beside her. Although these people were kind-hearted, they rushed to take the expected responsibility for invisible risks in advance.

Li Su slapped the table: "Enough! What are you talking about? Is this the time to share responsibility? I was thinking about the technical details, and those people from the Qin Dynasty had never seen them. After all, the technology comes from them. Ma Jun was young and understood and told me.

After a while, Ma Jun always has to bring all the relevant people to the audience and find out the details before making a decision. As for the risks, it is not your turn to worry.

The long-term plans that I, Li, have made for His Majesty, have achieved success in life and death, and have made plans to stabilize the country, are not worth this little face?

Even if I have paid Your Majesty 5 billion or even more money today, I will build an unusable "unfinished elevated road", the Prime Minister will still be my Prime Minister, and the Duke will still be my Duke! Should I be with Confucius and Mencius or with Confucius and Mencius! Is it still be in history?”

Li Su's last words were resounding, which made Zhuge Liang and Zhuge Jin completely shut up.

Domineering, this is already a evaluating merits and demerits in the world. Anyway, the merits and reputations have overflowed so much, so I am not afraid of deducting some "achievement points".

Then Li Su knocked on the string of golden bells hanging beside the case, and the servant guarding outside the door came in alertly as soon as he heard the ringtone. Li Su told him to call Ma Jun in again, and asked Ma Jun's accomplices of the Western Regions to invite them, and he wanted to investigate one by one.

The commander took the order and left immediately. At the same time, the relevant guards in the mansion did not need to explain and acted according to the procedures. I heard that Li Su wanted to meet foreigners who were not aware of the details. Even Dian Wei, who had been idle for many days, returned to work. He carried a pair of iron halberds and brought a few elite guards to the door, for fear that the barbarians who were received would have any abnormal actions. After all, they were not people who knew the truth.

From the perspective of security personnel, be careful, there is no big mistake, and it has formed an office process.

The reason why Li Su insisted on making a decision after meeting all the meetings was not because he was more cautious than Zhuge Liang.

But he was a later generation after all. For others at the end of the Han Dynasty, they were completely disgusted with the situation in the Western Regions, but Li Su knew about the context.

Therefore, if those visitors from the Western Regions obviously lie and conceal, even if Zhuge Liang's IQ may not be able to see it, Li Su is much more confident of exposing it.

If Li Su interrogated and confirmed that these strangers in the Western Regions did not lie on the major issues, then it would indirectly prove that the probability of lying on small details and technical issues was greatly reduced.

It’s not that Li Su didn’t believe that Rome had built a precision-designed stone elevated waterway, but he doubted whether these people who came to travel far could do it.

After all, the sample capacity is too small, so why is it so easy for an expert to go abroad? It is a bit unreasonable to have no adventure or other reasons.

What if you encounter a fraudulent design fee survey fee, you want to cheat and run away? Maybe you have only seen such great projects in Rome, or have participated in it lightly, but when you go to a foreign country, you will be the chief engineer.

For example, in the eyes of some foreigners in later generations, Chinese people know how to do kung fu, but some people who cheated on this are taking advantage of this. They are obviously a rookie, but they also go abroad to cheat tuition fees to teach kung fu.

Similarly, those foreign garbage who cannot make money in China come to China to teach English, and after coming, they brag themselves more. It seems that Western countries have advanced places, which means that the foreign garbage is so awesome.

I have seen elevated canals and the ability to design surveys and coordinate the construction of elevated canals. There is more than a huge difference in the difficulty. A Western Regions man who only saw his appearance was a sarcastic person who was so superficial that he used the information difference to make Ma Jun a person who was cheated of oriental professional engineering.

After all, Ma Jun is still a teenager, and after all, he lacks experience.

A female graduate student who studied in the 211 degree in normal school in later generations, when she first started to teach, she was fooled by foreign garbage and thought that the other party was extremely talented, so that it would be much more or less.
Chapter completed!