Carefree Prince In Tang Dynasty

Li Shimin frowned and said, "It's more than twice as fast? It saves effort? How is it possible?"

The "plough" that Li Xin said completely overturned Li Shimin's cognition. Cheng Yaojin and Yu Chigong also followed Li Shimin and listened to Li Xin's words.

Yuchi smiled and said: "I was a blacksmith in my early years, and I have made a lot of various agricultural tools, but I have never heard of such a plow."

Li Shimin nodded when he heard the words, and said to Li Daoxin: "I was almost bluffed by you. You brat dare to talk about a new type of plow without even laying the ground a few times, and you are not afraid of talking big and leaking."

Cheng Yaojin smiled and said, "However, it would be great if there is such a plow." Although he is usually not serious, he still has some insights into the people's livelihood and national conditions of the Tang Dynasty.

Indeed, if the plow mentioned by Li Xin really existed, then for the agriculture-based Tang Dynasty, its improvement of national power would be all-round, and it cannot be summed up in a few words.

Li Shimin agreed yearningly: "Yes. It's a pity, how can such a 'sharp weapon' be obtained so easily?"

Li Xin was listening to the conversation of several people, and couldn't help shaking his head secretly.

Li Shimin is already regarded as an outstanding person in the world, but he is still limited by history and lacks a broader vision and imagination.

"Your Majesty, what I said is the truth." Li Xin took the initiative to say, "I have indeed come up with a new type of plow. If Your Majesty doesn't believe it, I will let the craftsmen make it, and you will know after you try it."

Although Li Shimin still didn't believe it, Li Xin's "horseshoe" was still echoing in his mind, which made him a little bit moved. So, he nodded and said, "Okay. Then you can make this kind of plow and show me. If it is true as you said, I will definitely reward you a lot!"

Li Xin nodded with a smile, and murmured confidently in his heart: "This time, I will let you see the power of science and technology with your own eyes!"

After returning to the palace from Huangzhuang, Li Xin locked himself in the study. Although I have a clear memory of the plow I mentioned in my mind, I still need to think about the details. He used refined charcoal sticks instead of pencils, and traced the sketches in his mind on paper. After a while, a hill made of waste manuscripts piled up at his feet. Run Niang who was serving at the side seemed a little upset when she saw Li Xin, and she didn't dare to disturb him, but carefully picked up a piece of waste paper and opened it.

A simple plow was drawn in the center of the paper, surrounded by some strange figures, like the parts after the plow in the middle was disassembled.

Although Runniang was young, she had seen a plow before. But the plow that Li Xin drew on the paper was obviously different from the plow she was familiar with. You know, the plow that ordinary people use is straight, but the plow drawn on this paper has a long and curved handle. She had never seen such a strange-looking "plow". But out of trust in the prince, she immediately came to a conclusion: this is definitely not a simple plow, but a very powerful plow! As for what is great and why, she can't figure it out, after all, she is not a prince.

In fact, the new type of plow that Li Xin is working on is actually the famous Quyuan plow.

As a typical farming civilization, as early as the Han Dynasty, the commonly used plow was basically finalized, that is, the classic long straight shaft plow. Although this kind of plow has its advantages, its disadvantages are also quite obvious: it is not flexible enough to turn back and turn when plowing the land, it is laborious to lift the soil, and the efficiency is not high. But Qu Yuanli was different. First, the curved shaft plow is small in size and lower in production cost. Second, the plow body can swing during operation, which can adapt to the angle and reduce resistance. It is suitable for deep plowing and is conducive to turning.

Moreover, the Quyuanli has two more parts than the Changzhili, named Liping and Lijian. According to legend, the cooperation of these two things can adjust the depth and angle of plowing with a curved plow, which is something that a straight plow will never be able to achieve.

Li Xin remembered that he had read the introduction of Qu Yuanli in a book in his previous life, and carefully compared the difference between it and Zhiyuanli. It's just that this matter is so old, he can't remember the details of some drawings, and he has to recall carefully to find some clues, so he writes and draws on paper to help recall.

Fortunately, Li Xin is an engineering student, so he is naturally more sensitive to mechanical things than ordinary people. After knowing the general function of Qu Yuanli, he can make up the parts that he can't remember clearly by reasoning. Of course, it may not be reliable to use this method to perfectly reproduce the historical Quyuanli, but it is absolutely no problem to use this method to produce a brand-new Quyuanli with almost the same effect.

The result was just as Li Xin expected. He clearly remembered that the book he read said that a Quyuanli consists of eleven parts, but the design of the Quyuanli he drew actually has twelve parts. After thinking about it, he felt that there was no big problem, and finally decided to ignore this small discrepancy, and wait until the carpenters in the house have a look at it tomorrow.