Otaku Engineer in Great Tang Dynasty

　　 Hanjiazhuang, farmland outside the village.

Lao Hu kept thanking the young master a lot, but he was dumb, and he always said those few words. Li Zexuan was very embarrassed while he heard. Han Li was interrupting him when he saw this, "Lao Hu, you are here. After waiting so long, haven't you waited for the cattle?"

Old Hu Wenyan shook his head dejectedly, and pointed to a middle-aged man who was plowing not far in front of him and said, "Lizheng, you see, Lao Wang's house hasn't run out yet. This year there has been little rain, and this field is hard to plow. I'm so worried about this."

　　 "Uncle Han, can't you go to the county to borrow more cattle?"

　　 Li Zexuan listened to Lao Hu's complaint, feeling a little puzzled, so he asked.

Han Li shook his head embarrassedly: "Master, you don't know that we have a lot of people in Zhuangzi, and the county has more cattle allocated than other Zhuangzi. At this time, all places are plowing in spring. There must be no extra cattle in the county. Give it to us."

　　 Lao Hu also sighed heavily at this time: "Oh, Lizheng, at the current arable land speed, I guess many farmers in Zhuangzi might miss the spring ploughing period. How can this be done?"

Li Zexuan was also shocked when he heard this. He was also a child in the countryside in his previous life. He knew how serious the consequences of missing the spring plowing period were. It is estimated that many families will be hungry by that time. Moreover, if everyone misses the spring plowing, it will definitely affect their enthusiasm for raising chickens. The problem must be solved.

　　 He pondered for a while, looked at the old Hu next to him, and asked, "Uncle Hu, how much land can a cow cultivate in a day?"

The old man scratched his head and thought for a while and said: "Master, this year, the land is difficult to plow. A cow can plow up to four acres a day. If you plow more, you will be tired of the cow, and it will not be worth the loss. In previous years, six or seven mu of land could be cultivated in a day. Alas, it’s all because of the lack of rain this year."

　　 There are only four acres of land in a day. This is too slow. Li Zexuan frowned, looked at Han Lizheng, and asked, "Uncle Han, how many cattle are there in Zhuangzi?"

　　 "Master, this year Zhuangzi rented 20 cattle, which is much more than other Zhuangzi."

　　 Li Zexuan silently summed it up. At this speed, wouldn't it take more than a month to cultivate? This will not work. It's not that he never thought about spending money to buy cattle from other places, but in this era, cattle have always been nervous. He bought cattle from other places. What should the people do in that place? If I, like the other protagonists of the traversal, just cross over and bring a system, I can directly exchange it for a farming tractor to ensure that I can plow dozens of acres a day.

　　 Alas, since there is no tractor, it is not easy to increase the number of cattle, so now it seems that we have to think of other ways to improve the current farming efficiency. This problem is very easy to solve. There are countless advanced mechanical models in his mind, and he can definitely find many ploughs that are better than the current ones.

　　 "Uncle Han, let me see what plough the farmers use."

　　 Li Zexuan confessed and walked to the old Wang who had previously been Huzhi. Han Lizheng and Lao Hu also quickly followed.

　　 Li Zexuan came to the ridge next to Lao Wang, his eyes began to focus on the plough used by Lao Wang. Lao Wang was plowing the land intently, and he didn't even notice that someone was watching him next to him.

　　 Li Zexuan was highly nearsighted in his previous life. In this life, I don't know if it was because of his magical powers, but his eyesight was very good, and he could see the structure of the plow clearly from a distance. He found that the structure of the plow was really strange. The plow shaft turned out to be straight, and the length reached about nine feet. With such a long plow shaft, it might be difficult to turn around.

Li Zexuan quickly constructed the three-dimensional structure of the plough in front of him, and based on his previous knowledge of engineering mechanics, analyzed the forces on each part of the plough, and found that the plough actually needs to apply a lot of pulling force to plow the ground. , This structure is obviously unreasonable.

　　 Li Zexuan frowned, he was thinking about which better plough should be used instead of the current plough. Various plows of different ages flashed in my mind one by one, and suddenly stopped on a plow that was not very different from the current plow.

　　 "It's you!"

"This should be called the Quyuan Plow, and it shouldn’t appear yet. The structure of the Quyuan Plow should be improved from the structure of the current plough. Although the changes are not too big, every change is very important. Compared with the plow used by Lao Wang, this curved plow is obviously more labor-saving. It is easy to see it by drawing a diagram of the force analysis."

　　 At this time, Li Zexuan's mind not only has the three-dimensional model of the Quyuan Plow, but also its force analysis diagram. It is obvious that the Quyuan Plow is more labor-saving, and the saving is not a little bit. The most important thing is that this plow is not difficult to manufacture, and it is easy to manufacture in large quantities. When he returns, he can find a craftsman to start manufacturing immediately, so that he can ensure that the farmers in Hanjiazhuang will not miss spring ploughing.

In fact, the Tang dynasty currently uses the long straight shaft plow handed down from the Han dynasty~www.ltnovel.com~ Li Zexuan's mind conceived the QuYuan plow which only appeared in the Jiangdong area in the late Tang Dynasty, so it is also called Jiangdong Li. Compared with the long straight shaft plow, the curved shaft plow is indeed more flexible and labor-saving. When the soil is relatively moist, a young man with greater strength can pull it.

　　 "Uncle Han, you plow like this first, I will find a way for you these two days, and I will never let the farmers miss the spring plowing." Li Zexuan had a solution in his mind, so he turned around and said to Han Lizheng.

　　 Han Lizheng and Lao Hu Wenyan both looked surprised. Land is the life of the farmers. If you miss spring ploughing, the harvest will be greatly reduced. It is not uncommon for people to starve to death. Unexpectedly, the young master would help them find a way, which is really amazing.

"Thank you, Master, all of our Hanjiazhuang dealers will remember the great favor of the Master for a lifetime. I just don’t know what the Master plans to do? Should I go to Chang'an to buy cattle?" Han Lizheng bowed seriously, but he was also curious about what Li Zexuan would use. Ways to help them, if they buy farm cattle for their Zhuangzi, the price paid would be too expensive.

Li Zexuan shook his head and said with a smile: "Of course not to buy farm cattle. I bought the farm cattle. What do farmers in other places use? Uncle Han, I will bring you a more labor-saving plough in two days. At that time, your farming speed will increase at least twice!"

　　Han Lizheng and Lao Hu Wenyan were both surprised, is there such a plow in the world?

　　 Old Hu exaggeratedly widened his bull's eyes, and cried out in disbelief: "Young...Young master, you...but what you said is true? How can there be such a **** plow in this world?"

　　Li Zexuan nodded with certainty, and said: "Uncle Hu, don't worry, seeing is believing, we will see you in two days!"

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