I really don't want to be a rebel [infrastructure]

Luo Shixing was worried about the problem of the flood season in the rainy season very early on. At that time, he was still thinking that he would have to do it when he had time, but he didn't expect that this series of things would make him have no time to spare, and he didn't have time to think about this problem.

This is more important than rapeseed oil and the like. He quickly sat down and said, "I'll send someone to the county seat tomorrow to ask about Alezhen's situation in previous years."

Although some of them have lived here for a period of time, they may not know much about the rivers in the flood season. There may be records in Alezhen, and the Ouluo people have lived here for a long time. They must know how to deal with the rainy season and flood season There are also corresponding methods.

Cheng Jingwei directly pulled out a clay tablet and said, "I've already learned that the rainy season here is from April to November, but it doesn't have a lot of rain during the whole rainy season. Among them, five, six, seven and three months are the most dangerous. It is easy to flood back, and the Ouluo people have also built dams, but most of the dams they built are near villages and counties, and we don’t have any here.”

Luo Shixing thought about it seriously and said: "The dams they built are actually not very good, and besides the backflow of the river, there is also a problem of waterlogging."

Cui Shenji had studied flood control before becoming prime minister, and he had quite a lot of experience in this area, so he said after hearing this, "We don't need to worry too much."

Their terrain is high, even if there is too much rain, it will flow to low-lying places.

After hearing this, Luo Shixing felt even more uncomfortable: "So we don't need to worry about waterlogging, but we need to worry about mudslides caused by landslides."

Cui Shenji: ...

He has never lived in mountains, or in the rainy season, and at this moment, he has a feeling that he doesn't know how to solve it.

Fortunately, Luo Shixing never sighed because of difficulties, even if he was worried, it was only a momentary thing, and he would immediately find a solution.

Luo Shixing looked at Cheng Jingwei's records and said, "If the rain starts to increase significantly in May, we still have time."

Cui Shenji was helpless: "One month is not enough."

Luo Shixing nodded seriously: "It's not enough, but it's not a problem if we build it temporarily."

Cui Shenji looked at Cheng Jingwei: "The tiger wants to build a dam with glutinous rice mortar."

Cheng Jingwei said: "Once and for all, the firmness of the glutinous rice mortar is obvious to all, and the construction speed is also fast, without mining rocks."

Cui Shenji still insisted on his opinion: "Lime mortar is not inferior to it, and glutinous rice mortar consumes too much financial resources."

Cheng Jingwei shook his head slightly: "Lime mortar itself is not strong enough, and it needs stones to cooperate. If lime mortar is used, it will be necessary to mine stones at that time, which will waste a lot of time."

Luo Shixing sat there and looked at the two of them. He turned to look at whoever spoke. After Cheng Jingwei finished speaking, he couldn't help pressing the top of his head and said, "Say something!"

Although the way the little lynx shakes its head is very cute, but is it as appropriate for you to watch such an important matter as watching the excitement?

Luo Shixing put his hands on his chin and said, "I think you guys have been arguing for a long time and you haven't reached the point. Neither solution is good."

Cheng Jingwei, Cui Shenji:? ? ? ?

Luo Shixing glanced at them and said: "The disadvantages of lime mortar, A Wei is right in part, and the other part is that the lime mortar itself is relatively rough, with large pores, and it is easy to seep water. Once the water seeps, the dam is no different from the one that has not been built. It’s also a waste of money.”

Cui Shenji didn't speak. He would argue with Cheng Jingwei, but he would not refute Luo Shixing's words.

After all, even a dog in the manor knows that the design of the whole manor was done by Luo Shixing, and Cheng Jingwei was the one who made it.

The person who made it may not understand the reason, but the person who designed these must understand.

Cheng Jingwei smiled slightly after hearing this, and he knew that the little lynx would help him speak.

But soon Luo Shixing gave him a blow: "Glutinous rice mortar doesn't work either."

Cheng Jing frowned slightly: "We're not that short of money."

If it doesn't work, he can still think of ways to make money. In fact, he knows a lot of ways to make money, but those methods are more out of the ordinary.

For example, suppressing bandits or going to the tomb, the former is more dangerous, while the latter is more... wicked.

So when they are not short of money, Cheng Jingwei will not easily choose these two methods.

He did this in his previous life, but he was reborn on the eve of his success. He doubted whether it was luck or punishment.

However, he also encountered a lot of torture in his last life, and going to the grave must be detrimental to his morals. He himself didn't care, but he was worried about the little lynx.

The little lynx can be regarded as his only concern in the world now, and he hopes that the little lynx will be safe and sound.

Luo Shixing said: "It's not a question of whether there is money or not. Am I a person who will be short of money? The main reason is that one month is not enough. The embankment with glutinous rice mortar needs a drying process. When we built the house, it was the dry season, so we could Dry it out in a short time, you are now in the rainy season, if you don't dry it out to resist the flood, the interior is not strong enough and it will collapse."

This time Cheng Jingwei and Cui Shenji asked in unison: "Then what should we do?"

Luo Shixing sighed: "I can only use a relatively stupid method for the time being, and then design the dam properly in the dry season."

The so-called stupid method is actually to use sacks filled with soil and throw them in, just like later generations blocking the breach.

This method is the most convenient and effective, and can quickly block the part of the embankment in a short time.

And they haven't reached that time yet, so they can use this method to build up the embankment first.

Because it is simple and convenient enough, building a high embankment does not require too much manpower, and it is most suitable in a short time.

Cheng Jing frowned slightly: "This sounds feasible, but there is also a big problem. The soil in the sack can't stop the water, it can only slow down the flow of water."

Luo Shixing nodded, this is true.

Although later generations said they used sacks, they actually used relatively fine woven bags. Woven bags are considered plastic products, and their waterproof performance is much stronger than real sacks.

The current sacks are actually sacks woven from plants, which are similar in essence to cloth, and have almost no water resistance.

Luo Shixing said decisively: "Give a layer of tung oil to the outside of the sack."

Tung oil is the most common waterproof method nowadays.

After Cui Shenji heard it, he felt a little bad: "You are more expensive than the tiger's method."

Luo Shixing said earnestly: "There is no other way. Once the embankment breaks and the flood floods the manor, the loss will be more than just the money."

Cheng Jingwei agreed with his statement: "That's right, the money spent now is much less than the money lost."

Anyway, there are not many places that will involve them, mainly the part of the canal. If the river breaks its embankment, it will not invade them.

At the beginning, the scale of the canal was not very large, so it didn't need too much money.

Although Cui Shenji has been involved in various things before, he is very smart not to reach out to money management.

Not only him, even others didn't mean to reach out.

Strictly speaking, they now belong to the kind of existence that the two children invited to enshrine. When you need you, you help, and when you don't need you, don't worry about it.

They are taking the initiative to do things now because they want to prove their abilities. After all, Cheng Jingwei is a bit powerful, and he directly recruited all the prime ministers who were exiled to Lingnan.

And the others who were replaced were all executed. Cui Shenji reckoned that if there were more powerful people who were exiled, these two children might also be dragged here.

It's just that now he really wants to know the amount of the family's property. The main reason is that the project needs a certain budget, so he can't empty out the family all at once, right?

If there is a place that requires a large budget in the middle, they can find a way to change it in time, and it will not be so easy when they start to do it.

So Cui Shenji asked after consideration: "Now we don't have any money, so we can only barter. How much to exchange is also a question."

Luo Shixing directly patted a bag of pearls: "Just change it."

If you really use pearls to exchange money in the local area, it seems that it is not as good as Chang'an, but that also has something to do with the local prices. It is just a simple exchange of materials, and the amount of materials that can be exchanged in Chang'an is basically not much different here.

It may be a little less, and because it is relatively backward here, I can't exchange for good things, and the others are not bad.

Cui Shenji: ...

Why did he forget about pearls, okay, let alone use tung oil with these pearls, even if Luo Shixing wants to mix gold powder in the tung oil!

Oh, by the way, if the little lynx wants to add gold powder, they don't need to spend money to buy it, they have gold mines themselves!

Although Cui Shenji was very worried that young people would spend money too much when they had money in their hands, and wanted to persuade them not to spend money like this.

But when he thought that these two people spent their money in the right place, and they didn't spend their money like those dudes in Chang'an, he couldn't say anything.

Forget it, it's not easy for these two children.

Cui Shenji sighed and asked another soul torture: "How do you want to prevent mudslides?"