[Today's big seal, thank you for your long-term support]

What is the origin of human civilization?

Li Yuanxing was holding a book in his hand, which Li Lanshan had selected for him, a series of books on the development of primitive civilization.

Sit down in a soft chair and gently close the book. When Li Yuanxing reached for the teacup, a cup of hot tea had just been poured, and Ling Ye carefully handed the teacup to Li Yuanxing's hand.

Li Yuanxing did not have personal maids, the so-called twelve golden hairpins of the Qin Palace, and more of them managed the astonishing number of maids, maids, servants, and workers in the entire Qin Palace.

When they saw that Li Yuanxing was changing clothes and washing by himself, the princesses of Qin generously arranged their personal maids next to Li Yuanxing, and during this time, Cui Yanyan lived in Li Yuanxing's room, so naturally they gave the opportunity to send maids to Cui Yanyan's personal maids.

Taking the teacup, Li Yuanxing was originally habitually ready to say xiexie.

But when the words came to his lips, he couldn't hold back, and a sentence of xiexie might really scare this girl who was not yet an adult.

Li Yuanxing nodded slightly, just this small action made Ling Ye's heart happy.

After taking a sip of tea, there was no need to put the teacup back on the table, only with this action, Ling Ye would take the teacup.

Stretched out his hand and clicked on the tablet on the table, the picture was changing continuously, and Li Yuanxing was observing the progress of the three groups.

The Heavenly Workshop was established for research. It will not be pure carpentry, nor can it be any single project, but a mixture of multiple projects, and nothing can be done by a single project.

"Clever!" The picture on Li Yuanxing's tablet stopped.

Because Li Yuanxing was attracted to something that is considered a small toy in modern times, it is a theoretical model made for design. It's exactly like the little tricycle that children rode in the 80s, and the pedals are positioned on the front wheel, so you can move forward as long as you step on the front wheel.

"Come on, call Li Su!" Li Yuanxing ordered softly.

Li Su, the prince, is about to be crowned King Liang when he is just seven years old, and the formal ceremony has not yet been carried out, but the holy decree has been officially filed in Tianying Pavilion, this is a prince.

It is counted as the same level as Li Yuanxing, the king of one word.

Of course. Liang cannot be compared with Qin. Whether it is meaning or power, it is the difference between heaven and earth.

Soon, Li Su was called over. Seeing Li Yuanxing, he hurriedly bowed and saluted: "Uncle Fifth Emperor called his nephew to come." What do you command? ”

"You're pretty well-behaved. The imperial sister-in-law has a headache for you. Their big game is not for you, and Ben King asks you to do another thing. You do it with your heart and learn with your heart. When you are fifteen years old, the royal brother will rob you of a few foreign princesses and come back, you say it's okay! ”

Li Yuanxing is like a wolf grandmother, who is tempting a bad stomach, but in fact he is still very simple.

Sure enough, as soon as Li Yuanxing finished speaking, Li Yu shouted excitedly: "Uncle Five Emperors counts when he speaks, and those Silla maids in Uncle Five Emperors' Mansion say that they are the most beautiful in Chang'an." ”

"Very good, Princess Silla or something, it's not a problem!" When Li Yuanxing spoke, several guards were twitching their faces, they wanted to laugh, but they didn't dare to laugh. Ling Ye smiled very boldly.

If you change places and someone dares to laugh, Li Su will dare to pick up something and smash it over.

But this is Qin Wangzhuang, he doesn't have the guts!

Li Yuanxing sank his face: "If you can't do it well, what should you do?" ”

Li Su slowly lowered his head and bit his lip. Li Yuanxing was not in a hurry and continued to watch the progress of the workshop.

After waiting for a quarter of an hour, Li Su clenched his fist vigorously: "If you don't do it well, you can be beaten and punished!" Li Su's determination is really not small, this kind of determination for him is definitely no less than the Tang Dynasty sergeant to fight a charge with the enemy, Li Su even knows that he, the uncle of the Five Emperors, even the crown prince Li Chengqian, dares to fight the bamboo board.

Li Chengqian crawled on the bed, and his bloody ass shook everyone.

Li Su said that he was not afraid, but it was false.

"Come with this king!" Li Yuanxing stood up and walked out, and Li Su hurriedly followed.

At this time, in the courtyard of the General Staff Yuan, Li Chengqian had already copied 5,000 words while writing and reading, and everyone was resting.

Li Ke came to Li Chengqian's side and asked in a low voice, "Won't you make Uncle Five Emperors angry?" Li Ke was actually very worried, he knew what kind of character his younger brother was.

Li Chengqian sighed softly and looked sideways at Li Ke: "Fooling around in front of the Fifth Emperor Uncle, do you have the guts?" ”

Li Ke shook his head heavily, he didn't have the guts!

"There have been records of princes being demoted to commoners in all dynasties, and it is good to learn some lessons. I'm not rejoicing, I'm telling you a fact. The longer I stay in the courtyard, the more I am afraid of Uncle Five Emperors! "Li Chengqian and Li Ke themselves have some disagreements.

The two quarreled much more often than they would normally talk.

But there is one thing that the two rarely agree on, that is, the longer they stay in this staff house, the more they are afraid of Li Yuanxing. No one can tell the reason for this inexplicable fear.

Li Chengqian and Li Ke are afraid of Li Yuanxing, so Li Ke is not like this.

Following behind Li Yuanxing, Li Su felt a little trembling even when he walked.

"Your Highness Wan An!" The sergeant guarding the inner gate of the Tiangong Workshop saluted, and then opened the door.

Li Yuanxing walked straight to the children's tricycle: "Li Su, ride up." Then pedal around here, don't ask, think for yourself! ”

Li Su is not stupid at all, don't look at the fact that he is only seven years old, but he is a very shrewd guy.

Soon, he knew how to put his foot on the pedal and pedaled the little tricycle to motion.

"Your Highness, this thing can't run fast!" A craftsman said on the side.

Li Yuanxing ignored it, but asked, "How's your progress?" ”

The belt drive is too difficult, and the biting axle wheel alone can make it difficult for everyone. The balance of the two wheels, there is simply no way to master.

But the craftsmen of Datang came up with this three-wheeled style by themselves, just to balance.

This kind of three-wheeled car, Li Yuanxing has never mentioned it.

"Your Highness, please look at this!" A craftsman applied the principle of a water press to a tricycle, with the rear wheels driving the rear wheels and the two pedals using the lever principle. Every time the left and right feet are stepped on, the rear wheel turns about three times, but there is a big flaw, that is, it is impossible for people to sit down.

If you sit down, it's even harder.

It's far better to stand like that, with your left and right legs constantly stomping. Li Yuanxing tried it himself, and if he wanted to make the car run fast, he still had to spend some effort.

Compared to walking, it is much less effortless.

"Change, add a car plate at the back, and then extend the lever. The length is eight feet to one zhang, and then according to the shape of a child, make a small one. ”

When Li Yuanxing was talking, he asked the guards to call Li Su over again.

"Li Su, you're here. Follow the craftsmen to make this car, the kind of small car you can ride by yourself, and you can also add ten pounds of iron. The king's requirement is that you must keep trying, starting from learning this cart, and when you can ride this cart to pull a hundred catties of grain, this king will reward you. ”

Li Yuanxing was observing Li Su.

Although Li Su is a child, he has his own interests.

From the time Li Yuanxing rode a bicycle by himself, Li Su's fiery eyes made Li Yuanxing make up his mind, give him a chance to learn and progress, and let him be the first prince to learn engineering.

"Uncle Wuhuang Xie!" Li Su was very excited.

"Don't bother the craftsman, you can ask if you don't understand. You can put forward your own ideas, you have to try it yourself, how can you save more effort, so that the car can pull more things! Li Yuanxing commanded, Li Yu not only nodded continuously, but also took a small book to write down Li Yuanxing's words, for fear of forgetting something!

After getting Li Yuanxing's permission, Li Su went to see the craftsman polishing the connecting rod.

Datang actually already has a carpentry lathe, which was originally an apprentice shaking, but now it has been changed to a hydraulic one. Because the water power cannot be stopped at any time, there are craftsmen who have designed the most primitive clutch, all of which are far beyond Li Yuanxing's imagination, and the jishuliliang of the Tang Dynasty has not been developed.

Once the potential of the craftsmen is stimulated, industrialization is just around the corner!

Li Su was very attentive and raised many questions, and the foreman specially asked a sixth-class craftsman to follow Li Pu and explain various problems.

Li Yuanxing said to the foreman: "The wheelbarrow can push a hundred catties for one person, but it has no long strength." The two-wheeled car will not be able to be made for a while and a half, it is better to study this kind of tricycle with all its might, the king requirements, one person can pull five hundred catties, and it can travel two hundred miles a day. If you succeed before spring planting, the reward points will be doubled this time. Completed within one month, plus 30%! ”

"Yes! I'll do my best! ”

"Pay attention to eat well and rest well. The safety of the craftsman should be taken care of, and he should not be injured by exertion. Whether it is pedal type or belt type, it is one of them to meet the requirements of this king, and the more important point is to be able to use it, not like oxen and carriages, at least for a few years. But when the farm is busy, it must be reliable for several months in a row! ”

Li Yuanxing commanded.

"Your Highness, I will test it carefully after it is completed!"

"Good!" Li Yuanxing nodded, turned around and walked out, he didn't mention Li Yu's identity.

In fact, there is no need to mention that in Qin Wangzhuang, only the position is discussed, not the status level.

Standing outside the door of Tiangongfang, Li Yuanxing got a hint that surprised him.

The time machine, which has been silent for a long time, spoke: "Human beings are superior to beasts in using tools, and human tools are progressing, which also represents the progress of human civilization, which is a great civilization." ”

"A great civilization is a civilization that is different from a certain nation?"

"Completely correct, it is worth mentioning that the progress of a great civilization can promote the progress of the entire human civilization." (To be continued......)

PS: Third update.

Asking for a monthly pass,