"Waterwheel?"

Cheng Yanjin heard Li Zexuan say that he was going to build a waterwheel, he couldn't help but show doubts, thought in his heart for a moment, and couldn't help but say loudly: "Xiao Xuan, you are right, the waterwheel should be overturned, right?" ”

Hearing Cheng Yanjin say this, Li Zexuan realized that he had said the wrong thing, according to the memory in his mind, it seems that there is no such name as a waterwheel now, and on most occasions, people call for overturning, so he quickly changed his words: "Uh! Yes, Uncle Cheng, it's a rollover! ”

In folklore, the earliest water-drawing utensils of the ancients were "orange trees", which is simply a sturdy wooden pole with a wooden barrel for holding water at one end, and a weight similar to the current weight at the other end, using the lever principle discovered by the Chinese many years earlier than foreigners to achieve the purpose of saving the power of drawing water.

The waterwheel in official Chinese records did not come into existence until the Eastern Han Dynasty. At the end of the Eastern Han Dynasty, when Emperor Ling of the Han Dynasty was killed, he ordered Bi Lan to build a 'rollover', and there were basic devices such as wheel axle groove plates. There is also a saying that during the Three Kingdoms, the Wei people and horses also had the manufacture of overturned cars, "Wei Luo" said: "Ma Jun lives in the city of Kyoto, there is land for gardens, and there is no water to irrigate it, but it is a rollover, so that children turn to irrigate it." ”

However, at that time, the waterwheel was still only some basic ideas, and some basic structures derived from it, and its driving mode was relatively backward human drive. This is the first stage of the development of China's waterwheel, and it is also the most primitive stage.

Cheng Yanjin couldn't help but shake his head and said: "Xiao Xuan, this overturned car is okay to use to irrigate a small amount of fields, but if it is a few thousand acres of land, it is not as convenient as using manpower to carry water!" ”

Qin Qiong nodded, and also said: "Zhijie is right, this waterwheel is indeed not suitable for large-scale farmland irrigation, it is time-consuming and laborious, rather than this, it is better to carry water!" ”

Li Zexuan thought about it for a while, and knew that Cheng Biting Jin and Qin Qiong should have misunderstood, so he smiled slightly: "Uncle Cheng, Uncle Qin, the overturning car I am talking about is not the same as the previous ones, it does not need to be driven by manpower, but directly relies on the water flow to drive, and its water speed is much faster than the previous overturn, and it can run day and night, so instead of calling it a rollover, I am more accustomed to calling it a waterwheel~!" ”

When Cheng Yanjin heard this, his eyes widened as big as copper bells, and he was surprised: "There is also this kind of waterwheel that can be rotated by relying on water flow?" Xiao Xuan, aren't you deceiving the old man? ”

Qin Qiong and Niu Jinda also called it incredible.

Li Zexuan said with a smile: "How dare the little nephew deceive a few uncles, after the morning court, the little nephew will go back to Yunshan to draw the drawings, it should be a few days, the workshop will be able to build the kind of waterwheel I said!" ”

The waterwheel he said could use the water flow to run on its own, which was called "cylinder car" in history, which first originated in the late Tang Dynasty and flourished in the Song Dynasty.

Since the invention of the Eastern Han Dynasty and the Three Kingdoms era, it has been stagnant in the stage of manpower operation, until the emergence of the cylinder car, which broke this situation, and used water and animal power as the drive, so that the manpower was finally liberated from the overturned pedal. The "cylinder car" not only has a better irrigation efficiency than the previous overturned car, but also saves manpower and material resources, which is loved by subsequent generations of kings and popularized in life.

And Li Zexuan does not intend to copy the historical cylinder car as it is, he will optimize and transform it on the original basis, and add gears, bearings and other transmission mechanisms to key parts to further optimize the operation efficiency and friction loss of the water wheel. Now his workshop definitely has this craftsmanship and strength!

At this time, Li Zexuan had to admire his foresight, after crossing over to the Tang Dynasty, the first major thing he did was to establish the Qiqu Pavilion Workshop, and now most of his honors and disgraces are related to this workshop~!

"Haha! Good! When the time comes, Xiao Xuan, after you build this kind of waterwheel, you must tell me Lao Cheng! The old man has lived most of his life, and he has never seen a waterwheel that can move by himself, haha! ”

Cheng Yanjin laughed excitedly.

Li Zexuan nodded and said, "Definitely, definitely~!" ”

Talking and laughing all the way, they soon came to the palace, and the 50,000 left guard soldiers naturally couldn't enter the palace, and when they were on Suzaku Street, they had already turned to the camp. And the important generals in the army followed Li Er into the palace and accepted the reward!

There was nothing to do with Li Zexuan, so he stood there and dozed off, and vaguely heard how much money was rewarded to Yu Chi Jingde, Chai Shao and others, silk and satin, and food, etc., and then he quickly fell asleep!

Yes, just standing up and falling asleep!

has been in the court for so long, Li Zexuan has long practiced the ability to sleep standing with one hand, speaking of this skill, he still learned from Cheng Biting Jin, Lao Cheng has been in the court for more than ten years, and he has more fun than Li Zexuan in this regard~!

"Your Majesty, Wei Zuocheng has returned to Beijing, and he is now outside the Taiji Palace~!"

In a drowsy state, a shrill voice from the hall woke Li Zexuan up from his sleep, and when he came back to his senses, he couldn't help but be stunned in his heart: "Wei Zheng is back?" No, no, no! Can't sleep anymore! If you let Wei Troll read it, he will definitely participate in Xiaoye! ”

Li Zexuan hurriedly wiped the corners of his mouth, pretended to be energetic, and stood up straight.

It is said that this kind of dozing off in the court, basically every minister has done it, yes, everyone will see each other, and they will turn a blind eye to each other, but Wei Zheng, who can't tolerate sand in his eyes, is different, at least he will wake you up, and at worst he will spray you in front of the king and ignore the king!

Li Zexuan's position in the court was very close to Wei Zheng, and there were only two people in the middle, and I don't know if Li Er was intentional or unintentional, he was specially arranged for this position, and he was not allowed to change positions without permission!

So as soon as he heard that Wei Troll was back, Li Zexuan's sleepiness immediately disappeared!

"Oh~? Wei Aiqing is back? Come in~! ”

Li Er, who was sitting at the top, said with a happy face at this moment.

It's just that what Lao Li thinks in his heart at the moment, then I don't know, after all, as soon as Wei Trolls come back, he will often put pressure on Li Er, and whenever Lao Li has something wrong, Wei Trolls will spray directly!

"Oh~!"

The chamberlain left with his hand, and after a while, Wei Zheng strode in, his face was still dusty, he bowed to Li Er and said, "Old minister Wei Zheng, see Your Majesty!" ”

To tell the truth, since he left Chang'an in the first month of the year and went to Henan Province, he has not been to the court for so long, Wei Zheng has missed Li Er a little in his heart, this is not the basic feeling, but the love of the monarch and the minister! Lao Wei loves Lao Li from the bottom of his heart, and hopes that Lao Li can become a famous king through the ages!

Especially after Henan Province experienced a rebellion and nine deaths, Wei Zheng was even more eager to return to the court! So as soon as the Henan Road side was dealt with, he came back non-stop!

"Wei Aiqing is exempt, this is going to Henan Road, Aiqing has worked hard!"

Li Er hurriedly said "emotionally".

Although he was very annoyed by Wei Zheng before, but Wei Zheng has not been in the court for so long, Li Er is still a little uncomfortable! Now seeing that Wei Zheng is back, Li Er is inexplicably relieved for some reason!

"Thank you, Your Majesty!"

Wei Zheng stood up, and then said: "Your Majesty, when the old minister was in the first month, he was ordered to send Cui Junxuan back to Zhengzhou, and picket the illegal things that the Cui family has done over the years, and by the way, purge the Henan officials.

Subsequently, His Majesty sent a large army to Guancheng to quell the rebellion, after the rebels were ambushed, the old minister stayed in Henan Province to appease the people, and investigated the officials who were involved with the Cui family, and found a total of 33 officials, all the evidence is conclusive, these people have now been taken into the Dali Temple prison, waiting for His Majesty to fall! The old minister of Henan Road was fortunate not to be dishonored, and he came to hand in the decree today! ”

In the end, Wei Zheng bowed down and bowed.

Li Er nodded, and said in a deep voice: "Wei Aiqing's road is extremely difficult, in order to clear the rule of Henan Province, he has put his life in danger, and even has his life in danger many times, I am very moved in my heart, Henan Province is also because of Wei Aiqing's efforts, I have been able to reproduce the Lang Lang Qiankun, I decided to crown Aiqing as the prince Shaobao, Jin Ziguanglu doctor, and give 300 households of food~!" ”

Wei Zheng bowed down and said, "Thank you, Your Majesty~!" However, when the minister came back, he saw that many farmlands had suffered from a very serious drought along the way, and many people were picking up water from the river to water the land. ”

When Li Er heard this, he frowned, and said: "I have already known about this matter, and in the near future, the imperial court will allocate manpower, material resources, and financial resources to order the local state and county officials to help the people dredge ditches and ensure that those low-lying farmland can be irrigated by river water!" ”

Wei Zheng breathed a sigh of relief and arched his hand: "Your Majesty Shengming! In this way, the drought can be alleviated to the greatest extent and the losses of the people can be reduced! ”

Obviously, Wei Zheng also understands that it is impossible to take care of all the farmland in this level of drought now, and some farmland that cannot be reached by ditches can only rely on the people to carry water by themselves~!

"Hey, hey! Who says that farmland on high ground can't be irrigated? As far as I know from Lao Cheng, Yong'an Hou will build a kind of dump that will move by itself, and carry water from low to high places~! ”

Cheng Yanjin couldn't help but show off at this time.

Today's morning is watching others being rewarded, Cheng Yanjin originally felt quite boring, but now he finally found such an opportunity to show off, how could he miss it?

The court in the early days of the Tang Dynasty was still relatively free, Cheng Biting Jin said for no reason, no one blamed, but everyone looked at him with burning eyes, Lao Cheng became the protagonist from the role of "playing soy sauce" this morning!

Li Zexuan couldn't help but cover his face, and secretly said in his heart Lao Cheng really couldn't hold his breath, this waterwheel hasn't been made yet, you just take it out and brag about it, isn't it a little early?

"Lu Guogong, are you telling the truth? Is there really that kind of dump truck that can move itself and carry water? ”

Wei Zheng looked at Cheng Yanjin excitedly and asked.

Although he always quarrels with him on weekdays, Wei Zheng still knows how to put aside those personal feelings in this kind of major right and wrong.

"Huh~!"

Cheng Biting Jin sneered, and said proudly: "I Lao Cheng speaks, a spit and a nail, can you still trick you Wei Xuancheng~?" If you don't believe it, go ask Yong'an Hou! ”

This look is as if he wants to build a waterwheel himself!

Wei Zheng was too lazy to follow the old goods, he hurriedly set his eyes on Li Zexuan, and at this moment, Li Er finally couldn't help but speak: "Yong'an Hou, what Cheng Zhijie said is true?" ”

Li Zexuan knew that he couldn't continue to keep a low profile, he walked out of the Wenchen team, stepped forward and bowed and said: "Back to Your Majesty, there is indeed such a thing, the minister calls this kind of overturned car a waterwheel, it does not need manpower to pedal, and it can operate completely by relying on water power." However, these are just some ideas in the minister's mind, and they have not yet been created, Your Majesty will give the minister a few days, and then he will be able to know whether this method is feasible~! ”

Hearing what Li Zexuan said with such certainty, the ministers couldn't help but be shocked in their hearts, and Wei Zheng trembled with excitement, only to hear him mutter: "It's saved, now the people are saved!" ”

Li Er was also shocked, he looked at Li Zexuan with burning eyes, and said, "Waterwheel? Good! In the past few days, I have ordered you to devote yourself to the development of this waterwheel, and if you do a good job, I will definitely be rewarded~! ”

"Minister, obey!"

Li Zexuan bowed and said.

After that, he couldn't help but glance at Cheng Biting Jin with resentment, the improved version of the waterwheel was originally just a casual remark in the morning, whether it could be built or not, even he didn't know, but now that Cheng Biting Jin was so messed up, everyone in the whole court knew that he had to build the waterwheel anyway, and it was built successfully!

……………………………

After the early dynasty, he came out of the palace, and he didn't have time to gossip with Cheng Yanjin, Qin Qiong and other elders, so Wei Zheng urged Li Zexuan to hurry back to develop the waterwheel.

"Yong'an Hou, the drought is like fire, please look at the world, and be able to build the kind of waterwheel you said as soon as possible! Otherwise, I don't know how many people will lose their crops this year! The old man looked at the old man and felt pain! ”

Although Wei Zheng did not explicitly urge Li Zexuan to go back to Yunshan, the resentful little eyes still made Li Zexuan uncomfortable for a while, yes, Li Zexuan hurriedly gave up his hand, and immediately hit the horse back to Yunshan!

It is said that although Wei Zheng sometimes likes to drill the tip of the horns, this old man thinks about the people from the bottom of his heart, and it is precisely because of this that Li Zexuan respects Wei Zheng more.

"Xianggong, are you back~?"

Han Yu saw that Li Zexuan was back, and hurriedly stepped forward and said.

"Hmmm! Lady, I have some things to do for my husband, so I won't eat at noon! Don't let people go to the study to disturb me~! ”

Li Zexuan explained to his daughter-in-law and hurriedly went to the study.

He had to hurry up and draw an improved version of the waterwheel drawings!

Not only did Wei Zheng know that the drought was like fire, but he also knew it.

…………………………

First update!

2-in-1 chapter!

Thank you for the reward! (3 April)

(End of chapter)