I was engaged in infrastructure construction in the Han Dynasty [Transmigration Book]

To be honest, Liu Che had so much fun these two days that he almost forgot about the keel waterwheel.

At this time, when Liu Tan asked him if he wanted to see the model, he was confused for a moment, and after thinking about it, he asked in surprise, "It's so fast?"

Liu Tan smiled and said: "Of course it's fast. After all, there are blueprints, so it's still slow. I guess it's because Gong Shucan didn't dare to disturb the freedom of the emperor."

Liu Che put the document in his hand aside, and said enthusiastically, "Let him bring it over."

When Gong Shucan came over, his whole body was tense.

He originally thought that being able to meet His Royal Highness the King of the Northern Territory in this life was due to his ancestors burning incense, but he never expected that one day he would be able to meet His Majesty the Emperor!

Before coming, he thought about how to salute and respond to His Majesty many times. However, it turns out that when a person is nervous to a certain extent, his brain will become blank. It is useless to think about it before. All his actions All have become driven by instinct.

Liu Tan saw that Gong Shucan was so nervous that he was almost at the same level, so he couldn't bear to let him stay here, so he waved his hand and said, "You go down first, I'll just come here."

Gong Shucan woke up after hearing these words, and immediately hated himself for his poor performance just now, and let himself miss a great opportunity to perform.

But he wasn't that thick-skinned either, so he was too embarrassed to say he wanted to stay, so he had no choice but to leave.

Seeing Gong Shucan stepping back, Liu Che said dissatisfiedly, "It's embarrassing."

Liu Tan said with a smile: "Originally, what I'm interested in is their mechanical skills. It doesn't matter about other aspects, as long as I can make what I want."

When Liu Che thought about it, this was also the case. Liu Tan didn't expect these people to make any achievements in politics, so he didn't think it was a big deal.

Putting the matter of Gong Shucan aside, Liu Che began to look at the model of the keel waterwheel.

The keel waterwheel was completely different from the waterwheel he had seen before. In Liu Che's imagination, he thought that the keel waterwheel was also round, but he didn't expect it to be long.

Gong Shucan also put in a lot of effort in making this model. He even made water and fields. The keel waterwheel can also be controlled, so that he can more intuitively demonstrate the use and effect of the keel waterwheel.

Liu Che observed carefully and found that both ends of the keel waterwheel had axles, one end was placed in the water and the other end was placed on the field, and the entire keel waterwheel was placed obliquely.

The keel waterwheel is made up of a series of sprockets, each sprocket has a water tank, and there is a turning wood like a well wheel on the top axle. When the turning wood is shaken, the keel water The sprocket of the car starts to drive, and the water tanks are transported up one by one. The water tanks are also designed in a triangular shape.

Then it is brought up little by little through the sprocket drive. When the top axle is here, the water tank will be turned down, and the water in the tank will be poured into the field. The whole process is clearly identifiable, and it looks easier.

Liu Tan said while turning the crutches of the keel waterwheel: "This kind of waterwheel can actually be improved to be pulled by animal power, or manpower. Compared with the round-wheeled waterwheel, it may waste some energy, but The advantage is that it is cheap and suitable for many places.”

Liu Tan added a sentence at this point: "Of course, it will not be easy in places with too large a drop. In that case, it is better to build a waterwheel, or open a canal to divert water from above."

Liu Che looked at the keel waterwheel seriously. To be honest, he was not proficient in agriculture enough to know whether it was useful or not at a glance.

However, adhering to the principle that everything in the fairy world is a good thing, Liu Che has decided to let people find a place to promote it first.

Although there are not many mountains in the plain area, many places also have height differences. If a keel waterwheel is used, it should be able to reduce the burden of irrigation.

After Liu Tan stopped, Liu Che took it over curiously, turned it around twice and laughed, "This thing doesn't seem to have anything to do with the waterwheel by the river, and it's rare for you to think of it."

Liu Tan can't always say that this is the crystallization of the wisdom of the ancients, can he?So I could only calmly say: "It should be adjusted to local conditions, and although the appearance is different, in fact, many places are the same. The father can be regarded as a keel waterwheel, that is, a round-wheeled waterwheel is flattened, and then the driving force is from the water. Is it particularly easy to understand if it becomes human or other animal power?"

Liu Che smiled slightly: "Okay, you go and write a letter to the prince, and send someone to Chang'an as soon as possible, and send this and the miniature version of the waterwheel to Chang'an by the way, and ask him to discuss with Da Sinong."

Liu Tan immediately agreed, and turned to ask someone to pack the model of the keel waterwheel and the model of the water wheel that he got earlier, and then wrote a letter to send someone over.

But he thought about it, and in order to avoid misunderstandings in Chang'an, he decided to send someone from the public loser to explain to Liu Ju.

You definitely can't go to Gongshu Can, so Gongshu is also more suitable.

Before Gongshu also left, Gongshu told him to be careful in front of the prince, not to show timidity, and to play well, not to be afraid to say anything when seeing the emperor like him.

Gongshu also feels a little helpless when his father talks about it. To be honest, in his opinion, his father is also a little... not good.

I think that when Gong Shucan met Liu Tan, he was very nervous. Although Gong Shuyi was also nervous, he was born with the aura of a newborn calf not afraid of tigers. He thought much less than Gong Shucan, and the burden on his shoulders was also heavy. It was lighter than Gong Shucan, and of course more free and easy.

It seems that his father can't get any benefits in front of the emperor, it seems that he has to work hard.

So Liu Ju, who was far away in Chang'an, received the longest letter ever written by Liu Tan to him.

Liu Tan's letters are generally one-third official, one-third homely, and the remaining third is for interesting things.

But this time Liu Tan has more things to write, but because the keel waterwheel and the round-wheel waterwheel are more important, he put it at the front.

This is the first time Liu Ju has seen a model. At that time, even Liu Che was a little surprised when he saw such an exquisite model, let alone him.

Because it was night when he received the letter, he was not in a hurry to find Sang Hongyang, the chief minister, to come over to discuss matters, but asked someone to bring the model over and play with it for a while.

Liu Tan was worried that the letter was not clear enough. In fact, what he wrote in the letter was already very clear, and Liu Shi's comprehension ability was not a problem, so after he understood the difference between the two waterwheels, he knew that it would be the last time. The most popular may be the keel waterwheel.

The waterwheel waterwheel is beautiful and convenient, but it is too difficult to make.

After playing with the model enough, he put this aside and couldn't wait to continue reading the letter.

If he guessed correctly, most of the letters this time were probably related to his father.

Sure enough, most of Liu Tan's letters were about Liu Che's whereabouts and what they did and ate.

In the letter, Liu Tan also told Liu Ju that the recipes were sent along with the letter, and if he wanted to eat it himself, he could have someone cook it for him.

It was only then that Liu Ju understood what the other thick document that came with the letter was, co-authors were all menus?

Out of curiosity, he opened the menu to have a look, but in the middle of the night, he actually made himself hungry!

There is no way, a piece of paper is enough to just write the name of the dish, but Liu Tan not only wrote the name of the dish, but also the production method, what's more, he also wrote all the texture and taste on it!

Liu Ju reckoned that his younger brother's literary talents were all used to describe these dishes, but just looking at those adjectives made people salivate.

Liu Ju closed the menu halfway through, and didn't plan to continue reading, or else he might have to add another meal tonight.

Thinking that his father had already tasted these delicacies, Liu Ju couldn't help but feel a little sour—it's great to be the prince of Jianguo, but looking at these dishes, he also wanted to visit the Northern Kingdom.

However, what made him even more sour was still behind. He watched Liu Tan write it all over from the glass house to the tree house, from the grassland to the water park. The water park stayed for three or four days in a row, so it must be very fun.

Liu Ju instantly felt that his recent life was boring. Even if there was good news from the jade mine, the quality of Dunhuang jade was not good enough to comfort his wounded heart.

Liu Ju secretly decided that after Liu Che came back, he must ask Liu Che for leave and go to the northern border country to play for two days.

Especially the bustling Tongda City made him even more curious.

Thinking about his younger brother's life is really chic, what he wants to do, he doesn't know how his little head grows, it is full of so many novel and fun ideas.

Liu Ju, who was thinking about running to the northern border country, didn't know that the northern border country at this time was not considered peaceful.

It may not be accurate to say that it is not peaceful, but the fact is that when Liu Tan was playing around with Liu Che, someone saw this opportunity and started to make trouble.

The way to make trouble is also very simple, it turned out to be spreading songs, no one took it seriously at first, but when the songs spread in the original refugee city, Huo Guang became vigilant.

Originally, he thought that if Liu Tan didn't come back in time, he would directly arrest everyone first, clean up first, and report to him after Liu Tan came back.

Unexpectedly, Liu Tan came back in time, so Huo Guang ordered people to control the spread of the ballad and search for the source of the ballad, while coming over to talk to Liu Tan.

Liu Tan was a little surprised: "Gaoyao? What's wrong with Geyao?"

Huo Guang said, "Your Highness, let's take a look."

As he spoke, he handed over a piece of paper, and when Liu Tan took it, he found that there were only four lines of ballads on it: The northern border is thousands of miles away, and the cloud steps descend to the world.A sound of Qiang Guan is not waiting for nothing, and the mountains and rivers are full of blood.