"Before making objects, you must make drawings first. This has the advantage that when making drawings, the sizes of these parts can be determined, and the steps are also marked on them. After the drawings are painted, the craftsmen can enlarge the original drawing according to the steps and sizes on the drawings."

While drawing pictures, Li Yu told Li Xueyi about the benefits of making various parts of the water truck according to the drawings.

After saying that, Li Yu ignored Li Xueyi's strange eyes and continued: "It will not cause major mistakes because of a moment of carelessness. Just follow the steps and sizes of the drawings. It is completely a process of processing parts and assembly. It can be said to be very convenient."

Because this is just a simplified Chinese diagram, it didn't take long. Li Yu drew the overall drawing of the water truck, then marked the name on its parts, and classified and numbered all of these water truck parts.

"I have all the water trucks numbered. If the component of the bracket is number one when making it, then when making the bracket, just take out the drawing number one, you can see the structural drawing of the bracket, which is also convenient for you to make and use these drawings."

After Li Yu drew the overall drawings, he drew the five parts of the water truck separately, and compared the numbers on the overall drawings of the water truck, and also made corresponding numbers on the parts drawings.

When he was making the parts and drawings, he gave a detailed explanation of the craftsmen's use of these steps and the size and size of materials. When his spit was almost dry and his lips were a little dry, he finally made these drawings, which also allowed the craftsmen to fully understand the entire principles of the waterwheel work.

The craftsmen had only a little understanding of the new water truck. After listening to Li Yu's detailed explanation, these craftsmen immediately became familiar and proficient.

The next thing is how to make it. Before making it, it was the issue of material selection. Li Yu planned to leave directly, and the rest was the work of the craftsman, and he was not a carpenter.

However, Li Yu was a little worried and turned around and reminded: "The wood on the water wheel must be soaked in water all year round. The loose wood of wood is absolutely not allowed to be used. I don't want the water wheel that we have time-consuming and laboriously made will break in a few days! As far as I know, elm and jujube wood are better. Not only are the wood tight, but it is tough and corrosion-resistant.

If elm and jujube wood are not easy to find, or there are not enough materials, pine wood can be used. The pine wood is still relatively dense, and it is not easy to be soaked and corroded by water, and is relatively straight, which is convenient for the processing of parts. In order to further make the wood resistant to bubble and corrosion, after processing the wood into parts of the water wheel, it is best to brush these wood parts with tung oil, so that the effect is better."

"Don't worry, this time there are many materials for elm and jujube. Come home quickly and accompany your sister!" Li Xueyi saw that Li Yu was dodging and quickly asked him to go home, so as to save these craftsmen from having no confidence in working.

"By the way, there are gears, please do it for me."

Li Yu walked a long way and reminded him loudly.

"A person with such a talent is not far away from being an official, but unfortunately he has all his skills." Li Xueyi ignored Li Yu's reminder and muttered.

A craftsman stood behind Li Xueyi, heard Li Xueyi's muttering and said in a pleasing manner: "Mr. Li, Master Li knows everything, more than our craftsmen."

"You also feel that you have good vision. From now on, you will be the manager of the waterwheel workshop." Li Xueyi patted the craftsman on the shoulder and said.

"Thank you, Mr. Li, I will do my best in the future."

...

"Brother! Are you going to the Waterwheel Workshop today?"

As soon as Li Yu finished breakfast, he heard Li Feier’s question.

Li Yu raised his head and said, "If you don't go today, are you doing anything?"

After hearing this, Li Fei'er showed joy and said, "Brother, can you accompany me to the west city to play for a day?"

When Li Yu saw Li Fei'er's face full of joy, he thought about it. Since he returned to this house, he had never gone out to play with this sister.

Thinking of this, Li Yu said without hesitation: "Of course it's possible! Isn't it just going to Chang'an City to have fun? Brother, let's just have a day with you today."

Li Feier focused on him and said slowly: "Actually, I have wanted my brother to accompany me to the city once, but you are always not at home, brother."

Li Yu found that Li Fei'er had a resentful look in her eyes while she was talking.

It seems that she is still just practicing and forgetting her feelings. Li Feier is still the age of a girl, and she is also a time to play. She has to take some time to spend whatever she says in the future and spend a good time with this sister.

After Li Yu agreed, he looked back at Li Chun who was cleaning up the dishes and asked, "Li Chun, are you guarding your home at home? Or are you going to Chang'an with us?"

While packing the dishes, Li Chun raised his head and smiled and said, "Young Master, go with the lady! I'm at home and I won't go."

After hearing Li Chun's words, Li Yu did not force it. He also understood that Li Chun hoped to spend a day with Li Fei'er alone.

Since he was going out for a trip, he was like an ordinary person, which was even more fun. Li Yu simply stopped riding the horse and let Li Feier sit on the back of the horse. He led the horse himself. The two of them rushed along the way and enjoyed the scenery along the way.

In fact, there is nothing good to look at along the way. Due to the severe drought in Guanzhong this year, all the way is full of withered wild grasses and listless trees.

Half an hour later, the two came to the West City of Chang'an.

Chang'an West City is the place with the largest and most prosperous flow of people in Chang'an, and of course it is also a place where merchants from the Western Regions gather.

Last time, I didn’t have a good time on the Western City. I didn’t expect that there were so many Western Regions in the Western City. In addition to local residents, royal families, dignitaries, soldiers, slaves and servitudes, and ethnic minorities, there were actually many Persians, Western Regions, and Indians... found everywhere.

Li Fei'er pointed to a tall black man in the distance and shouted in surprise: "Brother, look, that's Kunlun slave, who is the Africans in our teaching books. I didn't expect to see them in the West Market today?"

Li Yu looked up and saw a high-necked and deep-necked Western Region man holding a rope in his hand. Several black people were tied to the rope and heading towards the market.

It seems that they are planning to sell these black people in the market?

"Brother, look at the blonde Hu woman, she actually had her belly exposed and even her belly button was leaking out. She was not embarrassed." After Li Fei'er said that, she spat and contempt for the unfamiliar woman.

Li Yu led the horse along the way and listened to Li Feier chattering happily about her experiences in the western market. Seeing Li Feier happy, Li Yu just listened and smiled and didn't speak. For Li Yu, who came from later generations and had been to alien planets, there was nothing strange here.

Li Feier was shocked every time she saw something. Li Yu also understood what was going on. She was locked up at home by her parents and trained her as a lady. Later, her family failed and her family became penniless. For the sake of life, she really didn't have time to come to the West Market for fun. Now that she saw the prosperity of Chang'an, she naturally felt dazzled.

So she seemed to be very unaware of it. She sat on the horse's back and pointed and talked about all kinds of curious things, attracting passers-by to watch.

Passers-by saw a stunning woman sitting on the back of a horse and screaming constantly. The person who led the horse was also a very young and handsome scholar. He lowered his head and listened everywhere, without saying a word.

Passers-by are sighing that such a beautiful woman is actually an unsavvy girl in the countryside. This man looks so handsome and looks like a rustic bun...

After the brother and sister passed by, they attracted passers-by to point out some points.

"My aunt, is it difficult to be more prosperous here than our Dragon and Phoenix Empire?" Li Yu saw the passers-by pointing at the place where he was pointing, then looked at the passers-by's strange gaze, and smiled bitterly.

After hearing Li Yu's question, Li Fei'er showed a happy smile on her pretty face and said, "That's different. When I saw the prosperity of our Dragon and Phoenix Empire, I felt that it was a dream, as if it was not real. I felt that my home was more real, not to mention that with you accompany me today, I was happy to see everything."

It seems that she is still in the mood. She is with her. She keeps talking about it because she wants to attract her own attention and never forget that there is a wife at home taking care of her part-time sister and she is still guarding you at home.

When Li Yu thought of this, he laughed dryly and ignored the guidance of passers-by. As long as she was happy, others could ignore their strange gazes.

(For the first update, please collect it, please vote for red.)
Chapter completed!