In front of me is a big plough made of wood, it is a long and straight look, a few pieces of wood are nailed below and stuck in the soil, the key is long, it is difficult to turn when it is long, China's land is not the same as that of foreign countries, it is a small peasant economy divided one by one, that is, the appearance of a family of dozens of acres of land, so big and particularly laborious.

  Li Dongsheng looked at the three dogs who still wanted to work and said, "You all use this to plow the fields?" ”

  Seeing Li Dongsheng so young, the middle-aged man looked disdainful, "Yes, official, the ancestors have passed down such a plow!" ”

  The old man also nodded and said, "For so many years, it's been such a plow!" ”

  Li Dongsheng recalled that in the Han Dynasty in China, the plough had been basically formed, but the plough in the Han Dynasty was a long straight plow, and the turning of the plough was not flexible enough when plowing the land, and the soil was laborious and inefficient; The plough used in later generations is the Quyuan plow, also known as the Jiangdong plow, which first appeared in the Dongjiang area in the late Tang Dynasty. Its advantage is that the plow body can swing during operation, full of mobility, easy to plough, and light and flexible, conducive to rotation, suitable for the characteristics of small paddy field area in the south of the Yangtze River, so the short curved plough first appeared in the Jiangdong area.

  Li Chunfeng knew that Li Dongsheng was in a hurry, and the two of them were familiar with each other, so they didn't play sloppy, "Dongsheng, what's wrong?" Do you have any ideas? If you have an idea, just say, don't hide it, this is a big deal, don't keep it! ”

  Li Dongsheng said, "The idea is a little, but I haven't done it, I don't know if it can work?" ”

  When the old man and the three dogs heard Li Dongsheng say this, they didn't take it to heart, mainly because Li Dongsheng's age was too young, and it was easy for people to underestimate him. Li Chunfeng was very excited: "Really? This is no joke! ”

  Li Dongsheng thought about the structure of the Quyuan plow, which consisted of eleven parts. That is, ploughshare, plough wall, plough bottom, plough press, strategy, plough arrow, plough wheel, plough tip, plough evaluation, plough building and plough plate. "Try it, it's better than doing nothing." ”

  After returning to Chang'an, Li Chunfeng and Li Dongsheng went to the house for a meal, went to see the baby again, and said directly, "This is a blessed person!" Hearing Li Cheng and Li Lin's smiles, Qian Duoduo was also very happy, Li Cheng also prepared a big red envelope, ready to thank him, but was politely rejected by Li Chunfeng, "I and Dongsheng are like brothers at first sight, you are too polite, uncle!" ”

  Li Cheng thought that Li Chunfeng didn't accept red envelopes because he was too little, because he likes to smash people with money now, and the horse lady delivered Li Cheng directly smashed five hundred times, and almost didn't faint happily. Now Chang'an City is full of propaganda for the generosity and benevolence of the Li family. Hearing that a bull like Li Chunfeng and his son are brothers, he is also proud in his heart.

  Remembering the busy farming, Li Chunfeng pulled Li Dongsheng out of the mansion and found a blacksmith shop and a carpenter shop, and then Li Dongsheng described and drew pictures, so that they had to make them within two days.

  The blacksmith and the carpenter listened and inquired, and it took a lot of effort to ask about what they were going to do, collect the deposit, and make an appointment to pick up the goods in two days. Li Chunfeng listened beside him and helped him translate, there are too many terms in Li Dongsheng's words, not to mention that even Li Chunfeng can't understand the craftsman, and he can only understand what it means by asking many times, and the size

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Problem, it is too troublesome to convert, but fortunately, Li Chunfeng is proficient in arithmetic to ensure the accuracy of the dimensions.

  He also saw what Li Dongsheng meant, that is, he wanted to make a new plow out to increase labor efficiency. I just don't know how it works.

  With this in mind, he ran to Li Dongsheng's door the next morning and pulled him to see how the finished product was. When they arrived at the place, a bunch of craftsmen were waiting for them, and there were piles of parts on the ground, and after seeing Li Dongsheng coming, they looked at him and waited for him to guide how to install it!

  Li Dongsheng instructed them to use the plough, the tip, the tenon to connect and fix, and soon formed a plough out, only to see the plough wall under it, the bottom of the plow, the pressure of the plough, the volume and mass are larger, the center of gravity is lower, there is a strong stability, the plough frame is wood, and the ploughshare below is made of iron, giving people the feeling that the center of gravity is moving downward, and it looks very beautiful.

  Once raw and twice cooked, the craftsmen assembled faster and faster, and thirty plows were installed in less than half a day. Li Dongsheng called Daniel Zhang to bring the family's carriage, loaded a few and went to the village that day to try it out.

  Li Chunfeng kept asking questions from east to west, and he wanted to figure out the production principle of this plow, why did he do it? Li Dongsheng didn't know why he did this, he just retold the things in the book. Sentence by sentence perfunctory, soon arrived in the field.

  Two days have passed, and it has not yet been the turn of the old man's family to plough the cattle, he is still standing there, anxiously watching the cattle in the field busy. Seeing the carriage parked beside him, he deliberately stood next to him for fear of colliding with the nobles.

  When he saw that it was Li Chunfeng and Li Dongsheng, he went up to say hello, and then his eyes were attracted by this novel plow. The length of this curved plough takes into account the proportion of the overall plow frame. The ratio of the length of the plough wheel to the plow frame is also reasonable. The ploughshare itself also has a certain ratio of length to width, and is unified and harmonious with the proportion of the ploughshare. Also considering the height factor of the Tang Dynasty people, it is not difficult for them to use it.

  Li Chunfeng brought a nearby ploughing cow over, and the farmer was doing a good job, but he was interrupted, and his face was not very happy, so he pulled his face and followed. Li Dongsheng instructed him to put the Quyuan plough on the ox, and then drove down the field: "How about you try the effect of this new plow!" ”

  I was still muttering in my heart that I didn't know which young master came out to make people happy, but his body was honest, and when the ox walked forward, he felt very relaxed, and his hands didn't need to use so much strength to stabilize the plow. The cow also seemed to feel the breath of relaxation, and walked faster and faster. The old man and Li Chunfeng were stunned, the effect is not so obvious, did this soil be watered last night?

  At the end of the field, the farmer was even more happy to find that this turn was too easy, the ox did not stop, and turned around with a slight flick, and the bend was small, unlike before when the oxen had to stop and re-align the plow, this time was saved.

  The more he worked, the happier he became, and the farmer walked back and forth a few times, and shouted excitedly, "My lord, this plow is really easy to use, and it saves a lot of effort." ”

  The old man also shouted happily, "Great, great, this thing is so good, I'll try it!" So saying, he jumped down from the field and pushed the man away, and drove the oxen around. Li Chunfeng also didn't believe that there was such a good effect, so he also went to operate it with great interest, and came up and exclaimed loudly, "What an artifact!" ”

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