Three Kingdoms, I open a tavern in Xudu

"That's it? It's too simple, look at me!"

Dian Weile didn't care about the cement block, he picked up the halberd and smashed it down hard.

boom!

The halberd collided with the concrete block.

However, the cement block did not shatter as Dian Wei thought, it just raised a little dust, and then nothing happened.

"Lao Dian, are you out of strength, or are you not full?"

Xun Yu knew very well how strong Dian Wei was. Under this blow, he couldn't break this strange stone. How could this be possible?

"No, I've tried so hard, no! I'm going to try again!"

Dian Wei was a little unconvinced, picked up the halberd and smashed it down again. This time the cement block was finally missing a small piece, but it didn't break in two as he thought. He murmured, "Why isn't it broken?"

"Is it really that hard?" Cao Cao was also shocked, "Zhongkang, come and try!"

However, Xu Chu picked up a hammer beside him and smashed it hard on another cement block. There was another loud noise, but it was not smashed either.

Everyone was suddenly full of curiosity, what kind of stone is this?

This can't be broken either!

Guo Jia looked at the cement and cement blocks, and suddenly he was surprised: "Zian, don't you want to tell us that the stones you brought are made from those powders?"

"You still have the quickest response, Fengxiao."

Chen Yang nodded and admitted: "That's right, what do you think of the hardness?"

"impossible!"

Xun Yu shook his head: "How can a handful of powder turn into a hard stone, Zian, are you kidding me?"

Chen Yang smiled and said, "I knew you wouldn't believe it, let's see how I prove it."

After all, Chen Yang ordered the servants of Cao's mansion to prepare water, sand and stones, mix these things with cement, and then make them into a cube shape, and put them in the sun to dry.

The quality of the cement this time is even better than the one made by Ma Jun last time, and it is very close to the cement of later generations.

During this period of time, Ma Jun summed up the successful experience. Although the cement production is not much at present, it has already achieved initial results.

Wait until the sun is about to go down, and the surface of the cement is finally dried.

Everyone gathered around to look at it, and then reached out to touch it. It was really hard.

This is a handful of powder, which turned into a hard stone, completely overturning their cognition.

"It's really...really possible, it's amazing!" Xun Yu said in surprise first.

"If powder can be turned into hard stone, if it can be used to build the city wall of Xudu, wouldn't it be indestructible?" Guo Jia also thought of this use.

Hearing this, Cao Cao's eyes flashed brightly, and he said excitedly: "That's right, if it is used to build city walls, why would Xu Du be afraid of foreign enemies? This powder is amazing!"

For a while, they all gathered around the cement, discussing and amazed.

"This kind of thing is called cement. I originally wanted to use it to build a dam to intercept the water flow. Of course it can be used to build a city wall."

Chen Yang continued: "Prime Minister, I wonder if the reservoir can be built?"

"Prime Minister, this needs to be considered carefully, and there is no rush." ​​Xun Yu was still not in favor of the construction of the reservoir.

If they do not agree, Chen Yang will not firmly demand, and said: "If we don't build a reservoir, then we can build other simple water conservancy projects, such as diversion canals, water trucks, etc., and we can also improve the current irrigation methods. My hydro project."

With that said, Chen Yang took out a simple book from his arms, with three large characters "Book of Farming" written on the cover.

"This is my opinion on agriculture, irrigation, etc., which should be useful!" Chen Yang handed it to Cao Cao.

Chen Yang had watched "Heavenly Creations" before, and he remembered what he remembered, and wrote down the contents in terms of agriculture and machinery.

There is also a part of the content that Chen Yang has learned that modern agriculture can use ancient technologies.

Cao Cao took it and looked at it for a while, his eyes suddenly widened and his hands trembled slightly.

This book, in the era when agriculture was the most important thing, is simply a heavenly book.

"I have never seen these farming techniques and irrigation methods before, but they can be put into practice and can definitely increase food production!" Guo Jia was as shocked as Cao Cao.

"That's right, if these technologies are used to cultivate, farmers' harvests will be greatly improved!"

Xun Yu also stared wide-eyed, looked at Chen Yang and said, "Zian, did you really write it?"

The two moved closer to Cao Cao and looked at the "Agriculture Book" in disbelief. The contents written in it subverted their understanding of agriculture.

Chen Yang nodded in agreement, and said: "I also have candidates for how to implement this "Nong Shi Shu". At the beginning, I brought back a man from Xiapi, named Chen Deng, whose character was Yuanlong. Can be reused."

Chen Yang remembers Chen Deng in history, who was promoted by Tao Qian to be the captain of Diannong, who developed water conservancy and farmland irrigation.

When he was in Xiapi, Chen Yang wanted to see him, but after Sima Yi's incident happened, he was delayed for a while.

When he came back to Xiapi again, it was Chen Deng who took the initiative to find Chen Yang.

Chen Deng didn't do this because he wanted to take refuge in Chen Yang, but because he learned of Chen Yang's achievements and came to visit. In fact, he had basically visited the generals and ministers under Cao Cao once.

"Okay, Zhongkang, go and call me Chen Deng right away!" Cao Cao suppressed the shock and excitement on his face.

Xu Chu went to make arrangements first, and within half an hour, Chen Deng appeared in front of Cao Cao.

"Chen Deng met the prime minister!" Chen Deng bowed.

Cao Cao quickly helped him up: "I heard that when Yuanlong was in Xuzhou, he was in charge of agriculture and developed water conservancy. He made great achievements!"

Chen Deng panicked: "This is just my duty!"

"The world is based on agriculture, Yuanlong is being humble!"

Cao Cao first handed him the "Book of Agricultural Affairs", and said, "Yuan Long read this book first, what do you think?"

Chen Deng opened the book curiously. At first, his expression was normal, but the more he looked down, the more surprised his expression became. He couldn't believe that agriculture can still develop like this.

Finally, he closed the pages of the book and asked, "May I ask the Prime Minister, who wrote this "Book of Agricultural Affairs"?"

"I!"

Chen Yang beside him said lightly: "Yuanlong, I have another opinion, I don't know if you think it is feasible!"

Then, he briefly talked about the reservoir.

Chen Deng immediately fell into deep thought. After a long time, he came back to his senses and said pleasantly: "Water accumulates when there is flood, and water is released when there is drought. I never thought that this method can perfectly solve the predicament of drought."

After speaking, he looked at Chen Yang with fiery eyes.

Cao Cao said, "Yuan Long, do you think this is feasible?"

Chen Deng nodded and said: "The reservoir is definitely feasible, but it will cost a lot to build a reservoir!"

I just watched Cao Cao think for a while, and finally said: "Okay, we built this reservoir!"

"Prime Minister!" Xun Yu said.

"Although it costs a lot and takes a long time, as Zian said, refugees can be temporarily expropriated for construction. It can not only build a reservoir, but also resettle refugees."

Cao Cao thought for a while, his mind became more determined, and he said: "Once it succeeds, it can be promoted in the whole Han Dynasty. From then on, we will no longer worry about drought. However, as Zian said, this matter should not be rushed. It will take three to five years. It takes even longer to build, so that it will be more stable."

"The most important thing at the moment is to develop the agricultural technology written in the "Nongshishu". This depends on Yuanlong!"

Chen Deng said gratefully: "Yuanlong will definitely live up to the prime minister's hope!"

Chen Yang took out another book from his arms, and said, "Yuanlong, here are my views on the reservoir, including how to build, maintain, and use it later. You can also read it."

Chen Deng took the book and read it carefully. He admired Chen Yang even more in his heart.

Next, Cao Cao rewarded Chen Deng, and he will be responsible for all water conservancy matters in the future.