Mai Ke was preparing to cross the river, when the neighing of people and horses came, and another army also arrived.

Looking closer, it turned out that the engineering column and the fire battalion led by Gu Jizhi had arrived.

After asking, they also chose this road, to cross the big river, meet the heavenly army of Zhongtiao Mountain, and then take Wangwu Mountain, diagonally insert Taihang Mountain.

Mai Ke called Gu Jizhi, and the two stood on the bank of the river and watched the turbid waves in the river together.

Seeing these rivers with the color of yellow mud, Gu Ji sighed.

The effort he spends on this great river accounts for almost half of all his research time, not only because it crosses the political and economic centers, but also because it has brought countless disasters, so that it has become the dream of everyone who cares about it.

Gu Jizhi is undoubtedly the strongest holder of this dream.

Mai Ke listened to Gu Jizhi's chatter, talking about his dreams, its methods of realizing his dreams, and gradually had an outline of related issues.

The purpose of this great river is to make the water turn from yellow to clear and restore the clarity from which it came from.

According to Gu Jizhi's introduction, there are two ways to achieve Huang Huiqing.

One is that from the source, it is not given a chance to dye yellow.

That is to say, wherever the water comes into contact with the water at the source, the water flow must be spotless and as clean and pollution-free as the water at the source.

The other is to reverse the yellow water and remove the yellow and restore its original clear appearance.

That is to say, the clear water and the loess should be separated and each should be placed in its own place.

Not to let the water turn yellow, can be guaranteed from two ways.

The first way is that the water of the river remains clear all the time while it flows in the river, that is. There is no source of pollution in the river that causes the water to turn yellow.

In this way, the water that enters the great river will always remain the same color as it is, and will never change its color.

The second way is that the tributaries of this great river are fed all the way. It will not bring yellow water into the mainstream.

This is to put an end to the water that is injected in the middle of the way, and bring unclean water into this big river.

When Mai Ke heard Gu Jizhi's ideas, he felt that they were all very effective methods, but he only considered another aspect, and this big river obviously faced various needs, and these needs would inevitably bring corresponding problems.

If these problems are not solved, it will affect the use and governance of other aspects. Therefore, there must be a comprehensive management programme.

With the end of the decisive battle between the two rivers, the governance of the entire river will be put on the agenda.

So, Mai Ke asked the army to rest here, and he and Gu Jizhi took off.

When he flew to an altitude of 500 meters, he saw a yellow dragon stuck in the mountains. Meandering, it seems to be in a hurry to escape. But the mountains are its natural enemy, and it cannot be unimpeded.

It wasn't until Mai Ke and others stopped just now that they got rid of the domination of the mountains and were liberated, allowing the latter to jump out and the torrent was surging. Shoot out!

Now, Mai Ke and Gu Jizhi are both in the sky pavilion on the back of the clouded leopard, looking in all directions, unobstructed, beyond the mountains below. It is two huge plains, the plains downstream, which seem to provide a garden for this yellow dragon to walk through at will, and there is no longer any obstruction!

Gu Jizhi lamented that because of this, the river breaches in the downstream occurred frequently, and even constantly diverted, and in the blink of an eye, the countryside, villages, and even cities became Zeguo.

Seeing that thousands of miles of fertile fields, towns and villages are densely packed, there is no guarantee to go, I don't know when, this Huanglong Xingzhi, go to visit, then thousands of wealth, splendid glory are all drifted away with the water, into nothing.

This yellow dragon must be tamed, let him change his color and change his temper!

The goal is clear water and a docile temper.

However, Mai Ke knows that it is by no means something that can be turned into reality by just thinking about it.

Moreover, the reason why the dragon is dyed yellow and short-tempered is in the upstream section of the river, and only by determining the cause and eradicating the root of the disease can the source be cleared and the river clear.

Mai Ke continued to rise, reaching a height of 1,500 meters, looking to the west of the mountains.

I saw that the plain to the east of the other mountains was several hundred meters high, and it was all a plain land, and the loess was everywhere.

The great river has its northwestern part, flows through the north, and then flows southward until it reaches the west side of the mountains, where it plunges headlong into the mountains.

Gu Jizhi continued to introduce.

It is said that this is the famous Hetao area, describing the big river flowing through the north and east, like a sleeve, covering this Loess Plateau.

It's the same set that has had two major impacts.

At the time of its first impact, the great rivers provided the plain with an abundant source of water, thus turning the plain into a land of fish and rice.

"The great river is harmful, and the profit is the only one", this proverb says that this is the case.

To the east of the mountains, there are countless disasters such as diversions, bursts, and overflows of large rivers, so the great rivers have become harmful rivers that do more harm than good.

And the source of the great river, full of high mountains and wild forests, is almost a deserted area, and it is not harmful or powerful.

Therefore, only the area in the river water ring is the real beneficiary area of the big river.

Because of the favorable conditions, all the woodlands, grasslands, mountains, and flat lands along the banks of the river have been reclaimed as farmland.

In other words, the loess, which was originally fixed, is now a random flow of sand, and while receiving irrigation from the river, it also rushes into the embrace of the river in large quantities.

The amount of loess that enters the river is so large that it can reach billions of tons every year!

This amount of loess is enough to fill this big river several times!

Fortunately, nature has its own way of adjusting.

In the mountains just mentioned, there is a torrent with a drop of three or four hundred meters, which can pour out the sediment accumulated in the former plain.

In this way, although the silted loess is solved, the sediment is carried downstream, which is the main cause of various disasters downstream.

This is tantamount to a powerful "set" that blames others and pushes the disaster onto the hundreds of millions of residents in the lower reaches of the river.

Although it was not intentional by the people there, objectively it was.

Therefore, this creates a contradiction between the upstream and downstream.

Thus, the governance of this great river also adds a new element out of thin air, and this new factor often becomes the most important factor.

This contradiction. This is especially true when human interventions are taken, which makes it very difficult to make decisions on these measures.

Mai Ke is well aware of these factors, because he not only stands tall and has a broad vision, but he also has historical depth. Knowing the troubles associated with the Hereafter.

He certainly wouldn't mind if he could help.

But for now, there are two main issues for him to consider.

One is the impact of the decisive battle of the two rivers, the decisive battle of the two rivers, the main battlefield is in the lower reaches of the big river, in case it goes crazy, in the decisive battle, wouldn't it be caught off guard?

The other is how to comprehensively govern this great river after the overthrow of the Manchu Qing Dynasty by the Kingdom of Heaven.

Gu Jizhi asked, "We will establish a direct passage to Taihang Mountain this time. How to cross the river, you know in your heart, Mai Ke?"

This is the most urgent, and I hope that Mai Ke has a way, otherwise it will take at least four or five days to rely on his engineering column.

Mai Ke said: "I think it's okay. I don't have much of a spectrum yet, hehe. ”

"Then it's up to you! I'll talk about comprehensive management. I think there are four basic purposes to be taken into account. Otherwise, there would be no need for comprehensive management. ”

"Which four?" Mai Ke asked with interest.

"Irrigation of farmland, domestic water, hydroelectric power, and river transportation! However, it also depends on different sections of the river and different times. The importance of this way of using river water will change. ”

"For example......" Mai Ke interjected.

"For example, when there is a special drought, domestic water becomes the most important thing, and if you don't have water, you die of thirst, where can you take care of anything else? It is necessary to transport troops and weapons and ammunition to the front line by water, and at this time, other uses have to give way. Gu Jizhi explained.

Sure enough! Mai Ke very much agreed with Gu Jizhi's viewpoint.

But it's all about how the river is used, and it's all about passively waiting for the river to work. People are basically powerless, and when disaster comes, they are helpless.

How do I take the initiative to grasp the power of the river, and can I make it work for me?

Thinking of this, Mai Ke was taken aback, is it possible for the enemy to take advantage of it?

There are too many examples of using the power of water to defeat the enemy in history, such as Guan Yunchang flooding the Seventh Army!

After thinking about it for a while, he had no clue, and then he turned his mind and asked Jizhi: "What else is the problem?"

For example, sometimes when there is a drought and no rain, the flow of a big river will be cut off; although up to now, the flow has not been stopped, but it is very close! Regardless of the four major functions or the eight major functions, if the water is cut off, all of them will be in vain!"

Mai Ke nodded and said: "Therefore, comprehensive management, we must consider the problem of sufficient water sources, and continuous and sufficient flow of water is the basis for comprehensive arrangement of water conservancy." ”

In fact, this problem is expressed as the problem of upstream and downstream competition for water sources. If the amount of water is fixed, the amount of water used is also fixed, and the supply and demand are just the same, and the upstream uses more water than its proportion, and the downstream will definitely not be enough. ”

It seems that there are more and more problems, and Mai Ke is already feeling a headache.

Gu Jizhi can be much earlier than him.

It's a really tough problem to solve.

Mai Ke saw that a lot of time had passed, and it was still too far from finding a solution, could it be that nothing had been accomplished, and it would be over?

Suddenly, there was an idea, isn't this a spiritual move?

Wouldn't it be a brilliant idea to give it all the conditions you know, and what you want, and let him build a bridge between the two?

That's it!

So he said to Gu Jizhi with a big heart: "Let's go! I have a great harvest today, go back and cross the river!"

So, the clouded leopard plunged headlong.

Mai Ke didn't wait for the landing, so he built a bridge across the three gates.

This 50-meter-wide bridge, with the middle point just on the mainstay, crosses the human gate, the god gate, and the ghost gate, and is also the framework of the three-in-one hub project.

But there is a difference, the entire bridge body, from south to north, is encased in a transparent culvert.

This is a special consideration of Mai Ke, even if there is a monstrous flood here in the future, the entire bridge will be buried under the water, the function of the bridge can be affected in the slightest, and it can be used as usual!

Mai Ke gave an order, and the army crossed the river in a mighty way!.

(To be continued......)