Otaku Engineer in Great Tang Dynasty

"Waterwheel?"

Cheng Yaojin heard Li Zexuan say that he was going to build a waterwheel. He couldn't help but wondered. After thinking for a moment in his heart, he couldn't help but said, "Xiaoxuan, you are right that the waterwheel should be overturned, right?"

Hearing what Cheng Yaojin said, Li Zexuan realized that he had said the wrong thing. According to the memory in his mind, it seems that there is no such thing as a waterwheel. On most occasions, people call it a rollover, so he quickly changed his words:" Uh! Yes, Uncle Cheng, it just overturned!"

In folklore, the earliest water-drawing equipment used by the ancients is \'\'jugao\'\'. Simply put, it is a strong wooden pole with a wooden bucket hanging on one end for water, and the other end is used To hang heavy objects similar to current weights, it uses the lever principle that Chinese people have discovered many years before foreigners to achieve the purpose of saving the power of drawing water.

The waterwheel in Chinese official written records did not appear until about the Eastern Han Dynasty. At the end of the Eastern Han Dynasty, when Emperor Ling of the Han Dynasty, he ordered Bi Lan to build \'turnover\', which had basic devices such as wheel axle groove plates. It is also said that during the Three Kingdoms period, Wei people and horses also made rollovers. "Wei Lue" said: "Ma Jun lived in the city of Kyoto. There is land to be used as a garden. If there is no water, it can be used as a rollover, so that children can turn to water."

However, the waterwheel at that time was just some basic ideas, and some basic structures derived from it, and its driving method was relatively backward driven by manpower. This is the first and most primitive stage of the development of Chinese waterwheels.

Cheng Yaojin couldn't help but shook his head and said, "Xiao Xuan, this dump truck can be used to irrigate a small amount of land, but if there are thousands of acres of land, it is not as convenient as using humans to lift water!"

Qin Qiong nodded and said, "Zhijie is right. This waterwheel is indeed not suitable for large-scale farmland irrigation. It is time-consuming and labor-intensive. Instead of this, it is better to carry water!"

Li Zexuan thought for a moment, knowing that Cheng Yaojin and Qin Qiong should have misunderstood, so he smiled slightly: "Uncle Cheng, Uncle Qin, the rollover I said is different from the previous ones. It does not require human power. Instead, it directly relies on the water flow to drive it. Its water output speed is much faster than that of previous rollovers, and it can run day and night. So instead of calling it a rollover, I am more used to calling it a waterwheel~!"

When Cheng Yaojin heard this, his eyes were as big as a copper bell. He was surprised: "There is this kind of waterwheel that can be turned by the flow of water? Xiaoxuan, are you lying to the old man?"

Qin Qiong and Niu Jinda also called out incredible.

Li Zexuan said with a smile: "How dare my nephew lie to some uncles? After the morning session, my nephew will go back to Yunshan to draw the drawings. It should be a few days before the workshop will be able to use the waterwheel I mentioned. Make it!"

The kind of waterwheel he said that can use water to run on its own is called a "tube car" in history. It first originated in the late Tang Dynasty and flourished in the Song Dynasty.

Since its invention in the Three Kingdoms Era, the dump truck has been stagnant in the stage of manpower operation. It was not until the emergence of the drum wagon that this situation was broken. It was driven by water and animal power to finally liberate manpower from the rollover pedal. \'\'Trolley car\'\' not only has better irrigation efficiency than the previous rollover, but also saves manpower and material resources, which is loved by subsequent generations of kings and promoted in life.

Moreover, Li Zexuan does not intend to copy the historical drum wagons as they are. He will optimize and transform them on the original basis, adding gears, bearings and other transmission mechanisms to key parts to further optimize the operation efficiency and friction loss of the water wagon. Now his workshop definitely has this technology and strength!

At this time, Li Zexuan had to admire his foresight. After he traveled to the Tang Dynasty, the first major thing he did was to establish the Qiquge Workshop. Now, most of his honor and disgrace are related to this workshop~ !

"Haha! Good! At that time, Xiaoxuan, after you build this kind of waterwheel, you must tell me Lao Cheng! The old man has lived for most of his life and has not seen a waterwheel that can move by himself, haha!"

Cheng Yaojin laughed excitedly.

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

He talked and laughed all the way, and soon came to the palace. It was naturally impossible for the fifty thousand left guards to enter the palace. When they were on Suzaku Street, they had already turned to Daying. The important generals in the army followed Li Er into the palace and accepted the reward!

Nothing happened to Li Zexuan, he just stood there and dozed off, vaguely hearing how much money was rewarded by Yuchi Jingde, Chai Shao and others, the silk, silk, and food, etc., and then he quickly fell asleep. !

Yes, I fell asleep while standing!

After spending so long in the court hall, Li Zexuan had already practiced the ability to stand and sleep with one hand. Speaking of this skill, he still learned this skill from Cheng Yaojin. Lao Cheng has been playing in the court hall for more than ten years. You can slip a lot more than Li Zexuan~!

"His Majesty, Wei Zuocheng has returned to Beijing and is now outside the Taiji Hall~!"

Drowsy, a shrill voice from the hall awakened Li Zexuan from his sleep. When he recovered, he couldn't help but stunned: "Wei Zheng is back? No, no! Can't sleep anymore. If we let Wei Penzi read it, he would definitely join Xiaoye!"

Li Zexuan quickly wiped the corners of his mouth, pretending to be vigorous, and straightened up.

By the way, this kind of dozing off in the court hall has basically been done by every minister. Therefore, when you see, you will open one eye and close one eye to each other, but there is no room for sand in your eyes. Wei Zheng is not the same, from waking you up, or from spraying you in the court to ignorance and resignation!

Li Zexuan's position in the court was very close to Wei Zheng, and there were only two people in between. I don't know if Li Er intentionally or unintentionally, this position was specially arranged for him, and he was not allowed to change his position privately!

So when I heard that Wei Penzi was back, Li Zexuan's sleepiness disappeared immediately!

"Oh~? Wei Aiqing is back? Please come in quickly~!"

Li Er, who sat on the top of the head, said with joy at this moment.

It's just that what Old Li is thinking at the moment, it is unknown. After all, when Wei Penzi comes back, he will often put pressure on Li Er. As soon as there is something wrong with Lao Li, Wei Penzi will spray directly!

"Here~!"

The servant left with his hands. After a while, Wei Zheng walked in strode, his face still looked like a servant, he bowed to Li Er and said, "Old minister Wei Zheng, see your majesty!"

To be honest, since leaving Chang'an on the first lunar month and heading to Henan Road, Wei Zheng has missed Li Er in his heart after not going to court for so long. This is not a basic love, but a relationship between the ruler and the minister! Lao Wei respected and loved Lao Li from the heart, and hoped that Lao Li could become a famous emperor through the ages!

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

"Wei Aiqing is free, and now I go to Henan Province, Aiqing has worked hard!"

Li Er quickly said "emotionally".

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

"Thank your Majesty!"

Wei Zheng stood up and said, "Your Majesty, when the old official is in the first month of the year, I was ordered to send Cui Junchuo back to Zhengzhou, and to pick up the illegal activities of the Cui family over the years, and to clear out the Henan officials. During this time, Cui Junchu did not want his children to be investigated by the old officials. Together with the Boling Cui family and the Xingyang Zheng family, the veteran rebels secretly, and the veteran has the help of Liu Rengui, who joined the army in Bianzhou, and escaped!

After that, His Majesty sent a large army to Guancheng to counter the rebellion. After the rebels came down, the veteran stayed in Henan Province to appease the people, and investigated the officials associated with the Cui family. A total of 33 officials were found. All the evidence is conclusive. The man has now been imprisoned in the Dali Temple jail, waiting for your majesty's release! Fortunately, the veteran of the Henan Road trip did not humiliate his life and came to give an order today! "

At the end, Wei Zheng bowed and bowed his hands.

Li Er nodded and said in a deep voice: "Wei Aiqing's road is extremely difficult and dangerous. In order to clear Henan's officials, he has committed dangers with his own body, and has even endangered his life many times. I am deeply moved. Henan Province is also because of Wei Aiqing's efforts. , I was able to reproduce the bright universe, I decided to appoint Aiqing as Prince Shaobao, Doctor Golden Ziguanglu, and give 300 households to Shiyi~!"

Wei Zheng bowed and said, "Your Majesty thanked the minister~! But when the minister came back, he saw that many farmland had suffered a very serious drought along the way. Many people were carrying water from the river to irrigate the land. The old minister must have ordered the households. The Ministry allocated money, and the Ministry of Industry sent craftsmen to help civilians dredge the ditches and ease the drought!"

Li Er frowned when he heard this, and said: "I have known about this for a long time. In a few days, the court will allocate human, material and financial resources to order local prefectures and counties to help the people dredge the ditches and ensure that the low-lying farmland can be covered. Irrigated by the river!"

Wei Zheng breathed a sigh of relief, and said, "Your Majesty Shengming! In this way, the drought can be relieved to the greatest extent and the people's losses can be reduced!"

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

"Hey! Who said that high-lying farmland can't be watered? As far as I know, Yonganhou will build a self-moving dump truck to carry water from low to high places~!"

Cheng Yaojin couldn't help but show up.

Early this morning, I was watching others being rewarded. Cheng Yaojin thought it was rather boring. Now that he finally found such a show-off opportunity, how could he miss it?

In the early days of the Tang Dynasty, the court was still relatively free. Cheng Yaojin said for no reason. No one blamed him. On the contrary, everyone looked at him with scorching eyes. Old Cheng went up to a "soy sauce" man from this morning. The role has become the protagonist!

Li Zexuan couldn't help covering his face, and he secretly said that Lao Cheng was really uncomfortable, that the waterwheel hadn't been made yet, so you just took it out and bragged it, didn't it be too early?

"Guogong Lu, what you said is true? Is there such a dump truck that can move by itself and carry water?"

Wei Zheng looked at Cheng Yaojin excitedly and asked.

Although he always quarreled with him about mileage and gold on weekdays, Wei Zheng still knew to put aside his personal feelings on such big disputes.

"Shit~!"

Cheng Yaojin snorted and said with a proud face: "My old Cheng speaks, one spit and one nail, can I still tell you whether Wei Xuancheng is not? If you don't believe it, go and ask Yonganhou!"

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

Wei Zheng was too lazy to follow the old guys, he quickly turned his attention to Li Zexuan, at this moment, Li Er finally couldn't help but say: "Hou Yongan, just now Cheng Zhijie said, is it true?"

Li Zexuan knew that he could not continue to keep a low profile. He walked out of the ministerial ranks and bowed forward and said: "My Majesty, there is indeed such a thing. The ministers call this kind of rollover a waterwheel. It can work. But these are just some of the ideas in the mind of the minister. They have not been created yet. Your Majesty will give the minister a few days to know if this method is feasible~!"

Hearing what Li Zexuan said so affirmatively, the ministers couldn't help being shocked. Wei Zheng trembled with excitement. He murmured: "It's saved. Now the people are saved!"

Li Er was also shocked. He looked at Li Zexuan with scorching eyes, and said, "Waterwheel? Good! In the last few days, I have asked you to concentrate on developing this waterwheel. If you do it well, I will definitely reward you~ !"

"Chen, follow the order!"

Li Zexuan bowed.

After all, he couldn't help but glanced at Cheng Yaojin with a grievance. The improved version of the waterwheel was originally just a casual comment in the morning. He didn't even know whether it could be built successfully, but now he is getting it done by Cheng Yaojin. Everybody knew that he had to build the waterwheel anyway and succeeded!

……………………………

After the early dynasty came out of the palace and had no time to gossip with Cheng Yaojin, Qin Qiong and other elders, Wei Zheng urged Li Zexuan to go back and develop the waterwheel.

"Hou Yong'an, the drought is like a fire, but for the sake of the common people in the world, you can build the kind of waterwheel you said as soon as possible! Otherwise, I don't know how many people will get nothing this year! Seeing Wei really hurts!"

Although Wei Zheng didn't clearly urge Li Zexuan to roll back to Yunshan, he still saw Li Zexuan uncomfortable with his little bitter eyes. Therefore, Li Zexuan hurriedly replied and immediately beat the horse back to Yunshan!

It is said that although Wei Zheng likes to be **** sometimes, but this old man thinks for the people in his heart, and it is precisely because of this that Li Zexuan respects Wei Zheng.

"Sang Gong~www.ltnovel.com~You are back~?"

Han Yuxi hurriedly greeted Li Zexuan when he was back.

"Yeah! Madam, I have something 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 confessed to his wife, and hurried to the study.

He must quickly draw the improved waterwheel drawing!

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

…………………………

First!

Two chapters in one!

Thank you Jiayan for the reward! (April 3)

(End of this chapter)