The potential of the glowing grape is certainly quite large, but it takes a long time to observe and study, and it must be done by Liu Dalu himself, and no one else can replace it.

Now the focus of the Tiejiabao people has shifted to the upcoming spring ploughing.

The importance of spring ploughing in ancient times does not need to be repeated one by one, anyway, as long as you know that in ancient times, even if it was war, you must make way for spring ploughing, and you must understand that on such an important day, it is impossible to be too cautious.

Everyone is worried about this year's spring ploughing, and Liu Dalu has heard countless complaints, complaining that the rain is not abundant enough during this time, and his words are full of worries about the future.

Like Tie Ling, Tie Yong, Quan Gang and others who were close to Liu Dalu, they wanted to speak several times when facing him, they should have thought of the dragon king's ability, so they hoped that this dragon king master could come to call for wind and rain, rain rain, and solve the worry of thirst for water.

But the dragon king master Liu Dalu will call the wind and rain with a hairy voice, and such a magic technique has not yet appeared in the system.

However, Liu Dalu knew that he had to get out of the horse and solve this matter, otherwise it might deal a heavy blow to the faith of believers.

"To solve the problem of water, it is actually very simple, you can put the target on the Qingshui River, let's go and see the Qingshui River, and then summarize a plan." Liu Dalu's confident proposal.

So, Liu Dalu rushed to Qingshui River with a group of people.

At the beginning, Tiejiabao was still a little prescient, and when laying the cement road, it also laid a road to the Qingshui River, which led directly to the river.

When he came to the Qingshui River, Liu Dalu saw the river that had shrunk a lot.

Last year, Liu Dalu also came to the Qingshui River, he remembered that the width of the Qingshui River at that time was more than 30 meters, and it was a big river, but now, the river surface is only more than ten meters wide, and the water level has dropped even more shockingly, and a large area of the riverbed is exposed.

At the confluence of the Qingshui River and the moat, Liu Dalu looked at it, and then estimated that in order to make the moat have water again, at least the water level of the Qingshui River should be raised by four to five meters, but this is obviously an impossible task for the people of Tiejiabao, at least they can't think of a way.

Walk downstream along the Qingshui River, a few miles away is the Daqing Mountains, and the Qingshui River also flows through the Daqing Mountain.

"Is there anyone down there?" Liu Dalu asked.

"Probably not."

"Never?"

"Well, we've never seen each other anyway."

That means that the Qingshui River may have bypassed Daqing Mountain and flowed into the sea, since this is the case, then there is no need to scruple, he has already thought of a way.

"To solve the problem of water for spring ploughing, we only need to build a dam here to raise the water level."

"Dam?" Everyone looked confused: "Dragon King, what is this?" ”

"Hah, you don't even know about the dam? Does Li Bing know? Li Bing of the Qin Dynasty. Liu Dalu's heart was full of a sense of superiority, this group of ignorant ancient people.

"It turns out that the Dragon King is talking about the former Qin Li Bing Taishou, and the dam refers to the Tuo built by Li Taishou?" Quan Gang suddenly.

"Fried... Fry... Shed? What is a frying shed? "The dragon king's sense of superiority is gone, these scholars are so annoying, just say some words he hasn't heard, can't he pretend to be a good force?

Liu Dalu looked up to the sky and snorted: "Haha, fry... Shed, dam, that's right, it's a dam, anyway, build a dam, raise the water level, that Quangang, since you know, then tell me, how should this dam be built? ”

"Uh..."Quan Gang's face suddenly wrinkled into a bitter melon: "Dragon King, although the student has read a few books, but this is a..."

"Dam."

"Yes, the dam, but the students really don't know how to build the dam."

The Iron Horse roared and asked, "Dragon King, I don't know how this dam should be built?" ”

Liu Dalu glanced at him angrily, this old man has no eyesight at all, where is his usual cleverness? Forget it, the Dragon King has a large number of them, and he chooses to forgive this group of ignorant mortals.

"The function of the dam is mainly to stop the water, adjust the water level, to put it simply, just like this field stalk, because there is a field stalk, the field can store water, once there is more water in the field, the water will flow out of the field stalk, you want to let the field have as much water as you want, just trim the field stalk as high, understand?"

"I see, but this is a big river, and the water is flowing all the time, so how can we build a dam in the water?"

"That's right, if you throw anything into the river, you'll be swept away."

"Throw stones, they won't go away."

"And cement, I think it's okay."

"How much do you have to throw into the water?"

Throwing stones? Throwing cement? Throwing an egg, listening to the discussion of these people, Liu Dalu's head was as big as a fight, and he realized that these people had no relevant experience at all, and he had to organize it.

"Don't talk about it, Iron Horse, you first gather a group of people, pave the cement road to this side, and pave it as soon as possible."

"Then I'll find some carpentry guys, and I'll need them to make some molds, and I'll tell them about the patterns when I get back."

"Do these things well, and then build a dam, such a dam, it's not difficult to build."

"Dragon King, can you fix it before spring ploughing?"

"It's okay to push a little harder."

"Don't worry, the Dragon King, the people of Tiejiabao have strength."

Then Liu Dalu climbed into the Qingshui River and conducted a survey on the spot.

"Now the water depth of the Qingshui River is only more than five meters, and the silt... There are stones below two meters, adding up to seven meters, and if you are safe, eight meters, and then from last year to now, the water level has dropped by seven or eight meters, adding up to sixteen meters, which means that the dam must be built at least 16 meters high. ”

"Let me think about it, how to repair the dam, it should be nailed into the pillar first, right? Then fill the fixtures with the fixed column as the anchor point, and the dam is generally trapezoidal, right? Alas, forget it, I'll figure it out on my own. ”

Liu Dalu had never built a dam before, nor had he paid attention to how the dam was built, he knew that it would be difficult to build a dam, but he felt that it was not a big problem, the reason why he was so confident was because he was very powerful now, he had such a huge body, and he could move things very quickly.

For the sake of insurance, Liu Dalu tried his best to decide to come to the third phase of the dam project, namely Dam No. 1, Dam No. 2 and Dam No. 3.

Dam No. 1 is mainly used to accumulate experience, responsible for intercepting part of the water flow, repaired at the front, Dam No. 2 is repaired behind No. 1, is a supplement to Dam No. 1, blocking most of the water flow, Dam No. 3 is repaired at the end, is the most complete dam.

Among them, Dam 1 was the most difficult to build, because it was inexperienced and had to make the dam block most of the water.

So, the key is the construction of Dam No. 1.

"If only I had a kilometer in length, I could go straight into the water, and the water wouldn't flow, and I would become a dam myself... Ha ha. The old man of the dragon king was skinned, and his heart was suddenly very happy, isn't it just a dam? It's not a problem.