The division of labor in the commercial plaza ended, and the glass craft was also taught by Hantong one by one. After solving all this, Jiang Wei returned to Xu Mansion tiredly.

"Brother, this is the bone broth I cooked, come and taste it."

Jiang Wei just sat on the Hu chair, and Ruoniang came over with a bowl of hot soup with a well-behaved look at this time, which made him feel a warmth in his heart.

Although he had eaten at the banquet just now, he was still not used to eating the food of this era with most of the wine he drank. And after drinking, drink a sip of hot soup, which can nourish the stomach.

But Jiang Wei took a sip of bone broth and immediately regretted it, it was too fishy, and there was too much salt. I saw Ruoniang ask with an expectant look,

"How?"

Jiang Weiqiang resisted the urge to spit it out and nodded, it tastes good, and it would be better to put some ginger.

Ruoniang listened to her brother's praise and seemed very happy,

"After that, I cooked soup for my brother every day to make my brother's body get better quickly."

Jiang Wei couldn't smile bitterly for a while, so he had to instruct,

"No need! It's good to leave these to the next person, if the mother has time, she can read and play the piano. ”

Ruoniang shook her little head, she watched her cousin and cousin read and play the piano and became sleepy, let her go to study? Isn't that idle, nothing to look at?

"Brother, do you think that Ruoniang's soup is not delicious?"

Seeing Ruoniang's suspicious face, Jiang Wei smiled awkwardly, he didn't expect his sister to be so smart that she could see through his lies.

"Ahem, my brother doesn't think so, he just thinks that Ruo Niang should be knowledgeable and become a lady, so that more people will like you, right?"

Ruoniang frowned at her good-looking little brows, with a tangled face,

"But as soon as I saw the books, I was sleepy."

Jiang Wei thought about it, and it was indeed the case. Thinking about the current education, he was also a little resistant, so he asked tentatively,

"Ruoniang, do you want to learn from your brother?"

"Okay."

Ruoniang agreed in one bite, she felt that her brother's knowledge was very magical, the machine that could record sounds, and the method of making ice, etc., all made Ruoniang feel magical, so she did not resist learning these things.

But an hour later, Ruoniang looked unhappy.

"Brother, you are lying, what's the use of the ninety-nine multiplication formula, and you can't record sounds, and you can't make ice, I want to learn immortal arts."

Jiang Wei looked helpless, so he said that this persuaded Ruoniang,

"These are the foundations, do you know what the foundation is?"

Ruoniang shook her little head blankly,

"It's like building a house, you have to dig the ground...... Only when you build the first floor can you build the second floor. ”

"Oh......"

Ruoniang suddenly realized, after all, there is no first floor, how to build the second floor, this truth is very easy to understand. Ruoniang understood a little, but she still looked at Jiang Wei with a skeptical attitude,

"Brother didn't lie to me?"

Jiang Wei smiled and pinched his cute little face, which made Ruoniang look disgusted.

"How could my brother lie to you? Ruoniang doesn't believe in her brother? Jiang Wei said, with a serious look.

So Ruo Niang believed,

"Of course I believe my brother."

And so the joyful teaching continued until dinner time.

But the next day, after breakfast, Ruoniang ran away and went to find Xu Lu to play with her eldest cousin.

Jiang Wei just smiled and shook his head, children, they are more playful, and they can just concentrate on their own things.

Jiang Wei asked the servant Niu to contact Yu Xiaoxian, and gave Yu Xiaoxian a list of buildings, telling him to provide the cement address.

Yu Xiaoxian was in charge of material procurement, and he was not familiar with the novelty of cement, but since Jiang Wei mentioned it, he decided to go and see it himself.

When Yu Xiao rushed to the cement factory first, he was frightened by the scale of the factory shed in front of him, which covered an area of one acre of land, and the factory shed was completely different from the workshop he had seen.

The general workshop is the feeling of an ordinary house, and the workshop in front of you may no longer be called a workshop. It is at least five meters high, and four rectangular factories occupy only two four-lane wide intersections on one acre of land.

What surprised Yu Xiaoxian the most was the road surface, the road surface was very smooth, it seemed to be a neat plank, a whole.

"Li Gongzi, what is this?"

Li De also received Jiang Wei's notice, and smiled modestly at this,

"Childe didn't dare to be, he just won Jiang Gongzi's appreciation, which is why he has today. If you don't dislike it, just call the next little brother. As for this thing, it's cement. ”

Yu Xiaoxian came back from his surprise at this time, after all, even the blue brick paved road on the main road in Chang'an City was not so smooth.

"Then Yu Mou will shout Brother Li."

"Brother Yu, please."

Yu Xiaoxian looked at the four factories respectively, and felt that he was an eye-opener for a while, four factories, each plant is responsible for a different way, this assembly-line production model opened his eyes. He didn't expect that the workshop could be built like this, and the division of labor could be so meticulous.

In fact, in the Qin Dynasty, there was assembly line production, and at this time, many large workshops such as ceramics and silk of big merchants also began to divide labor, but they were not so meticulous.

If the assembly line made Yu Xiaoxian feel emotional, then the hydraulic windmill made Yu Xiaoxian completely stunned.

Waterwheels are not uncommon in the Tang Dynasty, and they have appeared in the Eastern Han Dynasty. At the end of the Eastern Han Dynasty, when Emperor Ling, he ordered Bi Lan to build a "rollover", and there were basic devices such as axle groove plates. There is also a saying that during the Three Kingdoms, the Wei people and horses also had the manufacture of overturned cars ("Three Kingdoms. Wei Zhi, Volume 29, Du Chuan, Pei Song's Note).

In the Tang Dynasty, waterwheels were generally used to solve droughts. But manpower is limited after all, so whenever a major drought comes, it is only a small part of the solution.

What is strange is not the waterwheel, but the use of the waterwheel instead of human and animal power for production.

After Yu Xiao first looked at the waterwheel, he was deeply fascinated, because there were many differences between this waterwheel and the waterwheel he had seen, such as the structure of the rotating stone millstone, which was extremely cleverly designed. It is not clumsy at all, but very flexible to rotate the stone plate, especially the structure at the joints, which can be described as ingenious.

After a while, Yu Xiaoxian found out his gaffe, after all, some things can be said to be trade secrets, and they are extremely confidential to these many merchants.

"I'm sorry, I lost my temper."

Li De smiled and said that he didn't care, Jiang Wei had explained these things to him.

"If Brother Yu is interested, I can present the drawings, but ......"

Yu Xiaoxian's eyes lit up when he heard this,

"Brother Li doesn't have to be polite, just say something."

Li De asked people to prepare tea, and the two sat down at the table and began further negotiations.