Chapter 128

Seeing that Yan Mo had something to say, Yuan Zhan motioned to the other side to continue thinking about how to build the suspension bridge, and then turned to Yan Mo, what's the matter? "

He nodded to Yan Mo, and walked away with the slate.

Yes, it's a big deal. "Yan Mo rubbed his forehead. Don't open the city gate for now, just leave it open."

Why? "

Heavy rain, melting snow, if the four city gates are closed, our inner city will be flooded, even if we are on high ground. "Yan Mo moaned, sorry, I forgot to add sewers when planning. Damn it! How could I forget such an important thing!" In the city of his original world, it has happened more than once because of too much rain and unsmooth sewers, causing the city to fail. He has also personally encountered the matter of changing the ocean.

sewer? "

Yan Mo motioned to give him a slate and a charcoal pen, which can be found everywhere for convenience.

Yuan Zhan was using a few slates when he was talking to Meng just now. Seeing that he was going to use them, he picked up one and put it on his knee, and wiped the charcoal drawing on it with fur.

Yan Mo grabbed the charcoal and explained while drawing on the slate: The sewers are the underground water network, buried under the city, leaving a lot of access holes in the ground, connecting with all houses, roads, etc. Our daily life water and rainy and snowy weather The rainwater can flow into the ground through the sewers, and then flow into Qingyuan Lake through the underground water network. "

Yan Mo thought of a question again, would putting the exit of his sewer in Qingyuan Lake anger the mermaid? Fortunately, there is no polluting sewage now, but in the future...

One by one, there are problems everywhere! Why is it so difficult to build a city? He really wanted to let it go!

Yuan Zhan frowned when he saw Yan Mo's drawing. If you had said it earlier, the foundation of the city wall had already been built. If you wanted to open a tunnel under the city wall, you had to dig deep. "

The main pipeline can go under the city gate, and the embankment of the moat may be raised by another two meters. Ramon said that the rain was so heavy that the lake surface of Qingyuan Lake would expand. "

Yuan Zhan's eyelids twitched, Yan Mo was bothered by these trivial things, and he was even more bothered, but in the case of no one available, they could only handle it all by the two of them. Manpower, they really desperately need manpower who can live obediently!

To get these sewers, you have to dig out the ground of the inner city. "

Yes, and the sewers have to be built wide and strong like a house, and sealed well. It is more troublesome to build a circular shape. We have a small population. The main purpose is to prevent rainwater. It can also be built into a square shape. "

and many more! "Yuan Zhan seemed to have caught something, and after thinking for a while, he was catching a certain idea that flashed in his mind just now.

Underground, there are wide passages all over the city, leading to the outside..." Yuan Zhan's eyes gradually brightened.

Yes. "Yan Mo answered casually first, but after seeing Yuan Zhan's expression, he seemed to understand something, and gradually, the two showed the same expression.

typical! "Yan Mo shouted excitedly.

Yuan Zhan didn't find the right words, but he obviously thought the same as Yan Mo.

Clenching his fists to suppress his excitement, Yuan Zhan lowered his voice and said: The sewers can not only flow water, but also allow people to leave. When necessary, you can go out of the city to sneak behind the enemy, or you can run away. "

Yuan Zhan didn't think there was any shame in escaping. There were a lot of times when they couldn't beat Ye Shòu and escaped. The man took two steps back and forth in place, his thoughts were flying, and the sewer gave him a lot of inspiration, and he couldn't help thinking a lot.

When Yan Mo came back, he waved his hand and whispered: In addition to the sewers on the bright side, it is best to build one or two more hidden passages that only you and I know. "

Um? "

Preventing trouble before it happens, it is better to be prepared than not to be prepared. "

Yuan Zhan didn't understand the first half of the sentence, but he did. He didn't think of this just because his selfishness was not so heavy. The education he received in the Primordial Tribe since childhood was to consider the whole tribe, so he also habitually thinks about everything from the perspective that is beneficial to the whole and the collective. But Yan Mo opened more than one new door to his thinking that was about to begin to shape.

It would be great if there were more people with the same abilities as me. "Yuan Zhan didn't reject Yan Mo's proposal, he just had another headache.

Yan Mo said very unconscientiously: You should train your ability, and those who can work harder. In addition, there is no need to lay wall bricks in the sewers. You can try to build the wall directly with mixed soil, just like the foundation of the city wall you made. If the effect is good, we can do the same for our urban roads in the future. "

Yuan Zhan clenched his fist, he really wanted to beat up!

Suspension bridge you think of a way! "

Hey? I'm only in charge of making ideas and giving opinions, I'm already busy enough! "

Are you busy and I am not busy? How much do I have to do? City walls, river embankments, sewers, building houses, after all these things are done, I have to go to the salt lake to build the salt drying pond you mentioned, and the outer city walls have no shadow at all. The house hasn't been built yet. "

As I told you last time, I need a separate house. "

Yuan Zhandang didn't hear it, you are in charge of the suspension bridge, and if you think about it for a year, he may not be able to solve it. "

I've already drawn a picture..." Yan Mo still wants to struggle, he is really busy, communicating with the mermaid, teaching students, treating everyone, instructing everyone to go out to find useful animals and plants, and sometimes have to solve problems that happen in the tribe. Some small disputes...

And many things he wants to do have not yet started, such as the jiāo flow with the dwarves, he has already made plans, but there is absolutely no time to carry out. He also went to the islands in the lake, taught everyone to keep poultry, livestock, explore the forest, etc. Oh, he also wanted to take time to go back to see Jiufeng and the man-eating bees. He was not worried about the man-eating bees, but he was worried about Jiufeng.

Yuan Zhan stared at him.

Yan Mo raised his hand to express his surrender. I regret it. We shouldn't have built such a big city when there are so few people. We should build a few houses and make a wall! You said that your ability is really incomparable, which gave me hope, but you can't turn a city into a city with a wave of your hand, or a river with a stomp, tsk. "

Yuan Zhan raised his fist, if it wasn't for touching Mo to make him involuntarily bless him, he must have punched him now.

But no matter how angry they are, no matter how busy the two of them are, what should be done is still to be done.

Yan Mo took over the task of researching the construction of the suspension bridge, Yuan Zhan then turned around and went to get the embankment. The sewers were not in a hurry. There were at least four gates to allow the water to flow out of the city, but the embankment of the inner moat was not raised. The rain, the surrounding snow, and the water flowing out of the inner city will definitely flood the river.

When Yuan Zhan went to get the embankment, Yan Mo immediately asked people to gather all the residents in the city into the corner towers on the city wall. The discussion hall had not been built, otherwise it would be the best place to shelter from the rain.

The Awu people didn't know what happened. When they heard that they were asked to go to the city wall, they thought that there was an enemy attacking, so everyone grabbed their weapons first. It was not until Wu Chen and others explained that they knew that the priest said that there would be heavy rain in the next few days, the tribe would likely be flooded, and the tents would also accumulate water, so everyone was asked to take shelter in the corner tower of the city wall.

The Awu people have been breeding in this land for a hundred years, and they naturally know how much rain it will get during this period. In the past, they used to avoid the upper winds and hide in the tents, but now they are stronger and more resistant. Rain, you can live in the corner tower of the city wall without sleeping on the wet ground.

And after they built the house, according to the description of the house by the high priest, it was not necessary for them to even reach the city wall. Thinking about the beautiful life in the future, the Awu people who used to be very sad at this time can now look at the heavy rain outside and smile.

On the third day of heavy rain, all the snow and ice on the grasslands melted, and many depressions became ponds or swamps.

Although the four gates of the Jiuyuan Tribe's inner city were open, there was still a fist-deep pool of water, and the foundations of some construction sites were directly submerged by the water.

The gray-green dwarves also disappeared, whether they hid in the forest or in other safe places where they could take shelter from the rain.

Yuan Zhan was simply miserable during these three days.

Rainwater will affect the degree of condensation of the mixed soil. If the mixed soil cannot be dried, it will easily be washed away by large water bubbles.

Yuan Zhan tried his best to get rid of the water in the mixed soil. It turned out that it was easier for him to get rid of the water in the soil in dry weather, but in such a heavy rainy day, as soon as he expelled the water on one side, he was caught again on the other side. Watering it thoroughly made him have to keep going back to work, and even forced himself to speed up the rate at which water was removed from the soil.

In three days, according to his original speed, if he only raised the embankment of the inner moat by two meters, he would be able to complete at least one-third of it with all his strength, but now, he has not even completed one-tenth of it.

Perhaps the only good thing is that he seems to have found a knack for getting rid of things like water in the soil, and now he's practicing how to get rid of it faster and more widely.

Yan Mo was worried that people in the tribe would be cold and sick, so he reluctantly provided some herbs to make angelica mutton soup for everyone to drink.

It would be nice if there was ginger. Yan Mo thought about it more than once.

On the fifth day, Yan Mo brainstormed and asked Meng, Wu Chen and others to use their brains together. Everyone added and made up and finally came up with a specific method of making a suspension bridge. The method was very simple, and no one including Yan Mo had learned the relevant knowledge. It can only be speculated and explored by means of pictures.

However, Yan Mo has not carefully observed the suspension bridge, and the paintings he draws only have approximate shapes, which are subdivided into various functional parts, and he does not know.

Make a model first. "Yan Mo looked at the steps of making the suspension bridge subdivided on the slate, and decided.

grown ups! ' someone shouted from outside the door wearing a scorpion.

Yan Mo raised his head and motioned for the other party to come in.

The warrior in charge of the message shook his head, my lord, the leader asked me to tell you that the group of dwarves appeared. "

Oh? "Yan Mo subconsciously looked outside the observation hole, it was still raining heavily.