The room, a little messy.

On the floor are all kinds of bamboo slips, scrolls, and a mess of drawings. When I first came in, I didn't feel that this was a girl's room. In fact, according to Huang Yueying, she has six maids in her hometown in Jiangxia. At first, Cao Peng didn't understand, what do you want so many maids to do? But later, according to Huang Yueying's living conditions in Hailing, Cao Peng finally understood the strangeness.

If you don't have training, maybe six maids won't be enough!

Huang Yueying has a big road in life, don't look at people who are very clever, but she often gets confused. Especially when she was thinking about the problem, the confusion was even worse. Basically, wherever you go, you will be sloppy. If there is no servant girl to follow, it will be a real problem.

Fortunately, Bu Luan and Guo Huan are both literate and very smart.

With these two people following, Huang Yueying didn't look too sloppy. However, she tossed a lot, and this was a lot of effort, and the room was already a mess. Huang Yueying herself didn't seem to feel anything, as if dancing, jumping in the messy room, and soon walked to the bookcase and sat down.

"Ah Fu, come on."

Cao Peng walked over and sat down opposite Huang Yueying.

On the bookcase, it was also messed up, with white paper, and charcoal made by Cao Peng when he was in Jianyang...... "Yueying, you are ......"

"Don't talk yet, look at this."

She pushed a drawing in front of Cao Peng, her face full of anticipation.

Cao Peng took it, looked at it carefully for a moment, raised his head and asked, "What is this?" ”

"Overturn!"

"Oh?"

Huang Yueying said excitedly: "Do you remember Bi Lan that I told you about in the middle of the day? ”

"Uh...... That's the ten permanent attendants. ”

"Yes, that's him!" Huang Yueying said: "Actually, Bi Lan is not as unbearable as outsiders say. At least his skill is a must, and even Daddy is very impressed. My father said that if he didn't have this ability, Bi Lan would not be able to do the position of the ten permanent attendants. Its whimsical ideas are comparable to Mo Zhai, the master of the organs during the Warring States period. It's just that this person's virtue is really inhumane. ”

"Slowly, slowly, what the hell are you trying to say."

Seeing that Huang Yueying was getting more and more excited the more she spoke, and the topic was getting farther and farther, Cao Peng hurriedly waved his hand to stop it.

Huang Yueying smiled awkwardly and said softly: "In the third year of Zhongping (186 AD), in order to please the first emperor, Bi Lan once designed a sprinkler utensil, which was to overturn the car. It is said that you can use this tool to draw water from the river and sprinkle the streets, and you can get twice the result with half the effort.

When Daddy heard about it, he asked someone to inquire.

But this 'overturned' was carefully built by Bi Lan and dedicated to the first emperor, so that in the end, Daddy spent 100,000 yuan to get the model.

I remember very well at the time, Daddy was amazed at the rollover.

also said that Bi Lan's talent is extraordinary, but it's a pity that it was used in the wrong place...... Later, Daddy made some small changes based on the model of the overturned car and used it in my family's field. Water from the river can be easily drawn and used to irrigate the fields.

But you also know that Jiangxia is not short of water, so it is not very useful.

Later, Daddy found it boring, so he ruined the overturned car...... However, I still remember some of the general shape and construction. ”

"Slowly, slowly, you said that my uncle built a waterwheel?"

"It's not a waterwheel, it's an overturned!"

Cao Peng picked up the drawings again and looked at them carefully for a while.

Huang Yueying's painting skills are very outstanding, and Cao Peng feels that this waterwheel is really familiar.

Kong Ming car!

That's right, it is the prototype of the Kongming car.

I remember that in my previous life, Cao Peng played in Chengdu. He couldn't remember exactly which monument it was, but he did see a waterwheel at the time.

According to the tour guide, this waterwheel was invented and improved by Zhuge Liang and promoted in Shu, so it is called Kongming car.

Its shape is quite similar to the drawing in front of me.

Cao Peng couldn't help scratching his head and laughing dumbly.

"Yueying, do you want to make a waterwheel?"

"It's all said, it's called a rollover...... Well, but the name of the watermill is appropriate. ”

Huang Yueying was excited, pretty and pink, revealing a bright smile, "You say, if you can build a rollover, can you solve the drought?" ”

"This ......"

Cao Peng fell into deep thought.

Since ancient times, China has been a country based on agriculture, and water conservancy is the most indispensable part of agriculture, so the design of water conservancy projects has emerged in an endless stream.

Among them, the invention of the waterwheel is undoubtedly a great creation that condenses the wisdom of the Chinese people.

According to legend, the earliest folk tool for drawing water is called orange tree.

In "Zhuangzi - Outer Chapter - Heaven and Earth", it is recorded that Confucius's student Zigong traveled south, and when he passed by Hanyin on the way, he saw an old man holding an urn to draw water for irrigation. So Zigong felt pity and designed a labor-saving utensil, called '槔'. The way it is made is to 'chisel wood for the machine, the back is heavy and the front is light, and the water is pumped, and the number is like fertile soup'. That is, a horizontal log is supported on a wooden frame, one section is hung with a wooden bucket to draw water, and the other part is hung with a heavy object, similar to a lever, to save the power of drawing water.

This orange tree is the prototype of the waterwheel.

However, the real appearance of waterwheels was invented by Bi Lan at the end of the Eastern Han Dynasty.

Later, it was transformed by Zhuge Liang, and it is also recorded that it is said to be Ma Jun's transformation. But no matter who transforms it, the rollover can be regarded as an official appearance.

However, because the environment in which Ma Jun is located is different from that of Zhuge Liang, there are certain differences.

For example, the Kongming car is more conducive to drawing water in the south of the Yangtze River, while the keel overturning car is suitable for drawing water in the north...... Subsequently, in the Tang and Song dynasties, there was a cylinder car, with a pool and a connecting cylinder, who sent low water and high delivery, the effect was greater, and the manpower was saved.

In the Yuan and Ming dynasties, waterwheels continued to develop, gears and other elements appeared, and according to the terrain, various appliances such as water turning and overturning and ox turning overturned were invented. Then, since the Qing Dynasty, the development of China's watermills has stagnated. As for the reason...... "Yueying." ”

"Huh?"

"Actually, I think we can do better."

Huang Yueying's eyes lit up when she heard this.

"How?"

Cao Peng picked up the charcoal pen and turned it around twice in his hand.

The charcoal pen, improved by Huang Yueying, extracts the charcoal strips from the charcoal, and then carries them with a hollow wooden strip with a thickness of half a centimeter. There is a stopper inside, and when the charcoal nib is used up, the charcoal strip can be pushed out of the wooden strip by the push of the stopper and the writing can continue.

And this design is from Huang Yueying's handwriting.

Cao Peng played with it for a while, and had to sigh that Yueying's mind was clever.

He closed his eyes, pondered for a moment, and then drew a picture. However, his painting skills are definitely not as outstanding as Huang Yueying. Fortunately, Cao Peng can explain.

In his previous life, when he first started working, Cao Peng once went to Gaolan County, Lanzhou City, to escort a prisoner because of a case.

After the prisoner was handed over, his local colleagues took him to visit Gaolan and appreciate the customs of Gaolan. The colleague took Cao Peng and visited a tiger car. The tiger car is also a water wheel, also known as Lanzhou water wheel, sky crane and other names. At that time, the peers were quite proud to introduce it, saying that this crane was the earliest crane in China...... And the person who invented this crane was the Gaolan people during the Jiajing period of the Ming Dynasty, Duan continued.

This continuation has been a scholar and a scholar, erudite and talented.

After visiting several provinces in the south, after referring to what was seen in the south, the Lanzhou waterwheel can be poured back to irrigate the fields...... Its shape is different from that of the keel waterwheel in the south at that time, and the shape resembles a huge antique wheel.

Its spokes are as large as 20 meters in diameter and as small as 10 meters, and can lift water to a height of 15-18 meters.

Cao Peng listened to the proud introduction of his peers at that time, and couldn't help but be curious. When he left Langao County, his local colleagues also gave him a model of a Lanzhou waterwheel, with a picture and text introduction. Later, the model, with the destruction of the family, also turned to ashes.

Among the specific data, Cao Peng must not remember clearly.

However, its contoured shape, as well as some simple structures, Cao Peng can still recall a rough ...... According to the shape of the Lanzhou waterwheel, he drew a simple outline drawing, and then explained it to Huang Yueying one by one. When he encountered something he couldn't remember clearly, he swallowed the vague past. But even so, it made Huang Yueying's eyes shine brightly, revealing a look of excitement.

"Ah Fu, how did you come up with this?"

"Well...... As you know, there is no water around Zhongyang Mountain, and sometimes I see people working hard to draw water, so I think nonsense. ”

"Well, your design is better than mine."

But Huang Yueying said, and showed a distressed look, "It's just this thing, but it's very complicated, and it's not easy to make for a while."

Moreover, such a big rollover, it seems that some, some ......"

Huang Yueying couldn't say.

The design of the Lanzhou waterwheel was designed according to the characteristics of Gaolan in the Ming Dynasty.

Lanzhou at that time was not comparable to Lanzhou during the Three Kingdoms period.

At the end of the Eastern Han Dynasty, Lanzhou was named Jincheng County, although it was also very desolate, but the water and grass were abundant, and it was a place where Qiang and Han people lived together. The so-called bitter cold only means that the living conditions are not good. You must know that although Jincheng County is Xiliang, it can also be regarded as belonging to the Guanzhong region. The so-called 800 miles of Qinchuan is rich in the world. Those who win the pass will win the world...... It was not until the end of the Tang Dynasty that Guanzhong was completely desolate, and thus entered the historical stage of the north-south struggle. Before that, most of the competition in the world was the competition between the east and the west, from the Han Dynasty to the Sui and Tang dynasties.

Cao Peng thought for a while, "This waterwheel is not in a hurry to design it immediately."

The top priority at the moment is to be able to improve this overturn, and if it does encounter a major drought, it can be put into use immediately to alleviate the disaster...... After that, it can be improved slowly. ”

Huang Yueying thought about it and nodded vigorously.

"I'm in a bit of a hurry!"

After she finished speaking, she picked up the drawings and looked at them again, carefully putting them away.

Then she laid out the drawing of Kong Mingche she had just drawn on the bookcase.

"Ah Fu, help me see if you have any good ideas?"

At this time, Cao Peng's wine strength went up, and his eyelids were fighting.

However, seeing that Huang Yueying was full of interest, it was not easy for him to refuse too much. So he beat his spirit and accompanied Huang Yueying to discuss the improvement of the waterwheel.

In fact, where does Cao Peng understand this?

At the beginning, Huang Yueying also asked for his opinion, but later, she basically ignored Cao Peng.

Finally, Cao Peng couldn't help but feel tired and fell asleep on the bookcase. But when he woke up, he found that he was wearing a large robe. Huang Yueying's head rested on his lap, sleeping soundly. And on the drawings on the bookcase, dense small characters are written.

The day has been white.

Looking at the tiredness on Huang Yueying's face, Cao Peng couldn't help but feel a little distressed.

He reached out and gently ruffled Yueying's hair. saw Yueying move, turned over, and fell asleep on Cao Peng's lap again.

This girl probably hasn't slept all night!

Cao Peng took off the robe on his body and draped it on Huang Yueying's body.

Then pick up the drawings on the bookcase and look at them carefully.

The door slammed, and Bu Luan walked in.

Seeing the scene in front of her, she couldn't help but blush, and almost screamed out of her voice.

saw Cao Peng put his finger to his mouth and 'shhh

"Miss hasn't rested all night, let her sleep a little longer."

"Hmm."

Bu Luan blushed and nodded slightly.

"Pack it all up...... Xiaoluan, remember to warm a bowl of porridge in the kitchen, and let the young lady eat it before leaving for a while.

Also, don't break these things, be sure to keep them. Yueying's hard work this night is all on it, don't mess with it. ”

"The little maid knows."

Bu Luan lightly packed up the drawings and bamboo slips and scrolls on the ground, while secretly looking at Cao Peng and Huang Yueying with the corner of his eye.

I saw that Yueying's little face was flushed, revealing a sweet smile.

Cao Peng, on the other hand, was cautious, plucking the hair on her forehead, and her face was full of tenderness.

It's so good that Childe treats Miss Moon Shadow!

Bu Luan was confused, and suddenly hit the bed next to him.

Cao Peng raised his head, 'shh That look was enough to make Bu Luan's cheeks blush.

―――――――――――――――――――――――――― near Chen, Cao Peng received an order, and the old lady was ready to set off.

He hurriedly ordered the carriage and horses to prepare, and then put on his helmet and armor, and straddled the night white.

Huang Yueying didn't seem to wake up, she looked a little drowsy and confused. Once in the carriage, she took out the drawings and began to meditate again.

"Ah Fu, Yueying, what's wrong?"

Cao Nan couldn't help but asked softly.

"She's thinking about things...... Sister, don't blame her. ”

Cao Peng explained: "Yueying is like this, once she starts to think about problems, she is always a little confused, as if nothing is important. ”

"This girl ......" Cao Nan sighed and beckoned Guo Huan to come over.

"You and Xiaoluan follow Yueying, don't let her make trouble again."

In the morning, when Cao Peng went to change clothes, Huang Yueying was holding a drawing, almost unable to give up, and almost ate a charcoal into her stomach.

Cao Peng was also a little helpless about this.

can only let Guo Huan and Bu Luan stare at Huang Yueying.

Outside Chen County, the old lady boarded the carriage with the respectful support of Cao Hong.

"Ah Fu, my aunt is old, I have to take care of you all the way to Xudu."

Cao Hong took Cao Peng's hand and solemnly instructed.

Seeing that no one was paying attention to him, he suddenly lowered his voice, "Auntie's surname is strong, and she doesn't like people to welcome her the most." She has a good impression of you, and yesterday she praised you. Don't mess around, just take care of it, don't let her think you're doing it on purpose......"

Cao Hong is really good for me!

Cao Peng waved his hand and said goodbye to Cao Hong.

He raised his hand and shouted, "Give me the order, go!" ”

(To be continued)