"The first set of solutions is an urgent move, and it works very quickly." Deng Mu gritted his teeth and spoke, completely ignoring Tum and his group of people.

"The method is also very simple. In the upper reaches of the Kopan River, the river water is directed to the artificial lake, and then the irrigation water system is excavated downstream on the basis of the Kopan City water supply ditches."

"In this way, the existing water conservancy facilities in Kopan are used to renovate, and the living water of the Kopan River is diverted out to meet artificial lakes, domestic water and farmland irrigation."

"The advantage is that the project volume is not large. Just dig a section of rivers upstream and downstream respectively. The total length of the project is no more than twenty miles. It is not difficult for 150,000 workers, and it should be faster with explosives!"

“It can be completed in up to three months.”

Deng Mu talked happily and summarized the first set of plans in a few words, even the Mayans could understand it.

And listen to Toum, Lanqin and others...

"Okay!!! So good!! So awesome!"

I applauded again, Deng Mu was so angry that he wanted to curse... It's not over, right? I just heard the music in the wazzi and called that!!

Besides, do you still have the face to applaud? It’s difficult for you to think of a fool to have two hundred years of hard work. Do you still have the face to applaud?

Looking at Zhao Wei, it means that since the Mayans have no objection, then follow this plan?

Zhao Wei didn't speak, and looked unhurried.

But everyone was in deep thought. This plan was very simple and the most time-saving labor-saving. Many people thought of it, but Deng Mu said that there were two plans, so he didn't make a decision. Ma Xiao looked up at Deng Mu, "Let's listen to the second plan first..."

Deng Mu raised his eyebrows, as if he had a deep meaning, and pointed at Chen Yuanliang, "He said it."

The second plan was proposed by Chen Yuanliang, which is more complicated than the first one, and can be said to be much more complicated...

I saw Chen Yuanliang rise up and spread out a drawing.

"The second plan...is very troublesome, it may take five years or even ten years to achieve!"

"????" The sentence shocked everyone, and it was a bit worse... Five years and ten years?

The first set can only last three months!

Not only Ma Xiaoyi, but even Toum, Lanqin and the others were stunned, "So long?"

Chen Yuanliang nodded: "It must be long, because another Dujiangyan is to be built on the Kopan River!"

“Dujiangyan??”

Tumm didn't understand what it meant, but when he saw that the Song people present knew it, they couldn't help but ask, "What is...Dujiangyan?"

I only heard Zhao Wei say: "That is a great creation of our Han ancestors..."

Toum was still puzzled, "Yes, how great is it?"

Zhao Wei smiled, "The water conservancy project that was 1,500 years ago is not only used now, but will still be used for thousands of years. Do you think it is great?"

Toum was shocked! He looked at Lanqin very much, then inhale, and luck...... He suddenly blew up!

"good!!"

Zhao Wei was speechless and too lazy to take on this matter. He gave Ma Xiaoyi a wink, meaning that you would tell them what Dujiangyan is.

The second master obeyed his order and said loudly: "There is a place called Bashu in our original state, surrounded by mountains to form a realm."

"A long time ago, drought and flood were clearly distinguished, and the terrain was complex... not a place of abundant fertility."

"It's just because the rivers are abundant but they gather among the mountains, while the Qianli Plain suitable for farming is short of water and often drought... The situation is similar to that of your Maya."

The story of Dujiangyan is familiar to the Han people. The second master said it without any effort. When he heard it, Tumu and others were fascinated again, he almost shouted a few times.

"About 1,500 years ago, Li Bing, the prefect of Shu County, deeply understood the suffering of Bashu, and was determined to benefit the people. He built water conservancy on the Minjiang River, set up water dividing fish mouth, Feishayan and Baopingkou, and led the water of the Minjiang River into the Chengdu Plain, and called it "Yinghun" or "Du'anyan". It was renamed "Yingweiwei Weiyan" in the Tang Dynasty."

"When I was in the Zhao and Song dynasty, I was named "Dujiangyan".

"It has been more than 1,55 years since Li Bing started to build Dujiangyan. The Bashu Plain is also a predecessor. It has changed from a bad land with drought and little water to a country of Tianfu, a country with drought and fertile land that has thousands of miles of fertile land."

The second master glanced at Chen Yuanliang, "This is a major project to build a prosperous city for Kepan City!!"

"good!!!"

Well, a group of natives shouted again.

After the second master finished speaking, he sat back. Chen Yuanliang happened to take the call, "My plan has actually been explained by the Ma family."

"In the upper reaches of Kepan City, we built the water-dividing fish mouth, Feishayan and Baopingkou. The water in the Kepan River is diverted from its tributaries and leads it to Kepan City..."

"And a gate must be built in an artificial lake so that the river water can enter the lake to store water, or flow through the river channel next to the lake, and is directly used for irrigation in the downstream plain."

"But this is the case, it takes a lot of time. Not only does it have to build a dam in the Kopan River, but the drainage channel also needs to be dug throughout the entire process, and a sluice gate is also built... It may take ten years."

This time Chen Yuanliang said that the Mayans did not applaud. It was not that they didn’t know Chen Yuanliang’s plan, but that they didn’t understand it at all!!

What they don’t understand is... It’s obvious that as Deng Mu said, digging two short sections of rivers can be done in two or three months, so why are they still struggling for ten years?

"This..." Lanqin and Asan looked at each other. They were Kopan's house, so their words were still decisive.

"This, according to our view, since it is so difficult to build, it's better not to do it?" pointed at Deng Mu, "Can't you just follow this guest's plan?"

Tumm and others also nodded, "Ten years... are too long, so we Mayans cannot bother the Song people for such a long time. I can see it in two or three months."

After hearing this, Zhao Wei made a decision not too early and said to everyone with a smile: "Don't rush to make a decision. We Song people have an old saying, "No good goods are cheap."

"There must be a difference between three months and ten years, so let's listen first."

As he spoke, he looked at Deng Mu and Chen Yuanliang, "I'm right? These two solutions must have their own advantages and disadvantages, right?"

Deng Mu first secretly complained that Zhao Wei was about to open his mouth. Why didn’t he hear the old saying that there was no good product? Besides, didn’t you know the pros and cons last night?

Cleared his throat and had to cooperate: "Your Highness can see clearly..."

"That's right. The benefits of this first solution are obvious. It's a very fast word! You can solve Copan's dilemma in three months. In the future, whether your highness or King Lanqin can face the next challenge with peace of mind."

Deng Mu didn't say it clearly, but everyone understood that he was talking about the Mongolians.

"But the shortcomings... are not without them. That is, it is not a long-term plan. One day in the future, it may cause harm to Copan."

Zhao Wei frowned and looked worried, "What do you mean?"

Deng Mu, "Simple digging and divert the river water into the artificial lake. We have calculated that a hundred feet wide hole was opened on the Kopan River and one-third of the river water into the artificial lake. This can ensure that Kopanri uses water and irrigation of tens of thousands of acres of farmland is enough to meet the needs of the Lanqin Kingdom."

When Lanqin heard this, she couldn't help but interrupt, her voice urgently, "How can it still cause trouble for Copan?"

Deng Mu, "Because this is calculated based on the current flow of the Kopan River."

"To put it bluntly, this kind of opening a hole to dig the river is uncontrollable! We in our Song Dynasty never dared to do this."

"The so-called water conservancy is not just about diverting water out, but about how much you want to divert it, and you can't get more or less. It's up to people to get drought and flood."

Seeing that Lanqin and others were still confused, "Let me give you an example."

Extend three fingers, "If the water volume of the Kopan River is now 'three', we will lead 'one' into the lake, which will ensure that the lake water is not too much or too much."

"But what should I do if the river water is less in the dry season? If there are only two left in the river water, then the water that leads to it will not be enough, and it may not be able to satisfy the water use of the whole city."

Lanqin seemed to understand it, thinking that there are indeed many ways to make water conservancy. She thought about it and said, "That's fine! It's better than nothing!!"

Looking at Deng Mu and Zhao Wei, "Even if there is less drought, there will be no water, right?"

Deng Mu, "No, the possibility of the Kopan River drying up is not high."

Lanqin, "That's easy to say! As long as there is not a drop of water, we Lanqin people can survive it."

Deng Mu smiled bitterly, "You don't understand what I mean... You may be able to survive the drought, but what if there is too much water?"

Deng Mu was solemn, "Now the river water is 'three'. If it becomes six, it will become ten!"

"The river that flows into the world will be greater than one! It may be two, or even four or five!!"

"The artificial lake cannot hold so much water, and the water supply ditches in the city do not have the capacity to discharge floods. At that time, the artificial lake will collapse and may flood Kepan City!"

"Hiss!!!" Everyone took a breath, which was something they didn't expect. They were a little scared.

They all changed their brilliance and were at a loss for a moment.

Deng Mu continued: "Although Fusang is in a period of long-term drought, no one knows how long it will last. Maybe ten years, maybe a hundred years. Floods may not occur, but as a river repairer, this is a problem that has to be considered. Once this place becomes rainy and watery, then Kopan City will suffer."

"So...I'm going to say that the first solution is an urgent trick. It's quick to take effect, but there are hidden dangers."

"The second set is different. Dujiangyan has the ability to control the water diversion flow at will!"

"No matter how much water the river is, it can be used to attract all the water to the artificial lake!"

"In addition, add a water gate to the human river and lake. When floods come, they can close the gate and stop water. The river channel does not go through the water system in the city and flows through the city. You never have to worry about floods. It can be said that it will be done once and for all."

"After the completion of the construction, Kepan City will no longer worry about water conservancy for a hundred and thousands of years. There will be no more floods! This place will become the second country of Tianfu."

"Of course, the price is ten years..."

Deng Mu finished speaking, sat back and gave everyone time to digest.

One can be repaired immediately, but I can't guarantee it in the future.

The other is that it takes ten years to benefit from it.

How to choose, the Mayans have to make their own ideas...

Of course, Deng Mu himself has a tendency, and he tends to be the first plan.

With the enemy in front of him, how can I have time to spend ten years on the natives? Besides, it’s not the business of Da Song. Zhao Wei just wanted to take the opportunity to conquer the Lanqin Kingdom, just be able to live a good life.
To be continued...