Traveling through Great Qin: Father Qin Shihuang!

"Tiles? Is this expensive?"

"It's not very expensive, it's mainly for decoration, and it plays a role of keeping warm and moisture-proof."

Zhao Che casually explained.

"This thing can also be promoted to benefit my Great Qin and Qianshou."

Ying Zheng nodded. In this small classroom, there are so many good things that he has never seen before.

"Then there are desks. The conditions are limited. Now we are making double desks. A classroom can seat about 60 people at most. The number of young students that can be sent from the nearby Zhuangzi is probably only this number, and there is no need for it." class."

"60 people is already quite a lot. If it is really not enough, we will expand it at that time."

Ying Zheng nodded.

"My lord, where are you sitting?"

Zhao Shu saw the table on the podium, but after looking for a long time, he couldn't find a chair, so he couldn't help but asked curiously.

"Sir, he always stands when he is in class."

"What? Let the teacher stand and let those children sit down?"

People in ancient times respected their teachers very much. Even Zhao Shu, who has never read a book, would understand.

Ying Zheng also frowned slightly. Regardless of his being the Emperor of Qin, when he was a child studying and studying, he always stood respectfully beside his master and listened to the lectures.

Zhao Che prepared chairs for the students, but let the teacher stand, which is simply against the principles of ethics.

"Che'er, I'm afraid this move is a bit inappropriate. Even if you let the young students sit and listen to the class, at least you have to prepare a chair for the teacher, right?"

Ying Zheng pondered for a while, and gently reminded Zhao Che.

"Father, you've misunderstood me. I didn't prepare a chair for my husband. It's not because I don't respect them, but for their convenience."

"convenient?"

"Yes, sir, there are three reasons for standing up in class. Let me explain to you one by one."

Zhao Che stood on the podium.

"Firstly, Mr. Lectures while standing up, this is also to show respect to the students. After all, in my opinion, although teachers and students have the grace of preaching and teaching, they are still equal in essence, so respect is also mutual."

"Secondly, when the teacher is in class, he doesn't just talk about it, but explains it to the students with blackboard writing. It is not convenient to write while sitting."

"Thirdly, Mr. standing on the podium has the advantage of being condescending, and it is also convenient to observe every move of the students in the classroom. If any students are distracted, you can remind them in time!"

……

Hearing this, Ying Zheng's expression changed slightly.

"What is the writing on the blackboard that Young Master is talking about? Is it a book for teaching?"

Zhao Shu raised a question.

"No, writing on the blackboard refers to what is written on the blackboard. After all, there are so many students in a classroom, it is impossible for the teacher to teach them one by one, so write the things that need attention on the blackboard so that everyone can see them." Get it, if there is anything you don’t understand, you can ask questions.”

"Is the blackboard the black wall behind?"

"Not bad!"

Zhao Che nodded, then picked up the chalk on the table, and smoothly wrote a line of beautiful writing on the blackboard.

"Teacher, one who preaches and teaches karma to solve doubts!"

What Zhao Che wrote was exactly the first sentence at the beginning of the famous teacher's talk through the ages.

In addition to this sentence, what interested Ying Zheng even more was naturally this little piece of chalk.

"It is really convenient to write on this board, and it is really suitable for teaching students."

Ying Zheng reached for a piece of chalk and tried to write a few words on the blackboard.

"This is natural. The more convenient point of the blackboard is that after use, you can directly wipe off the writing on it and you can reuse it."

Zhao Che said, picked up the blackboard eraser, and erased the chalk writing on it.

"Okay, good thing, there are so many mysteries contained in this small classroom, and the private schools we build in the future must be built according to this specification."

Ying Zheng cheered loudly.

"Actually, there are many good things in this classroom that you can't see. Why don't you come and guess?"

"What we can't see?"

Ying Zheng was a little puzzled, and looked around the empty classroom, but saw nothing.

"Che'er, you'd better just say it directly, don't keep it up."

Ying Zheng shook his head helplessly.

"Okay, this thing is actually under the window sill."

As Zhao Che said, he walked behind a table against the wall, and pushed the table away, revealing a piece of connected iron pipes.

"Iron pipe? Why put this thing in the classroom?"

Ying Zheng asked with some doubts.

"This thing is called a heater, and it's used to keep warm in winter."

"Heating? Just rely on this small iron pipe to keep warm?"

Ying Zheng curled his lips, apparently not believing Zhao Che's words.

"Dad, don't underestimate this pipe. All the heating pipes in the whole school are connected together, and then lead to the boiler room. In winter, charcoal is burned in the boiler room, and then the hot air can pass through. These pipes are sent to each teacher, so that students and teachers don’t have to worry about being too cold when they have classes in winter.”

"Is that so? Isn't this heater more convenient than a stove?"

Ying Zheng was a little envious, his own Xianyang Palace didn't have such good things, and he didn't expect these young students to enjoy it first.

"It's okay. Although heating is convenient, it also consumes a lot of resources. Most people have a stove at home. For heating, unless it is to centralize a certain area for unified heating, there is no need to waste so much energy. "

"Central heating?"

Ying Zheng pondered for a while, and thought that Zhao Che's idea was quite feasible.

The northwest is bitterly cold. Every winter, every household must have heating. It is very convenient to replace the stove with heating.

"What? Daddy, do you want to do the heating business?"

Zhao Che guessed what Ying Zheng was thinking right now.

"Yes, do you think this business is feasible?"

"It's feasible, but it depends on where it is. You don't have to think about it in the village, but it can be used in shops in the city."

"Oh? Why can't it be used in the village?"

Yingzheng was a little surprised. Shouldn't such a good thing as heating be popularized in every household?

"Of course it is because of the construction. The village is full of single-family households, and the distance between each household is also very long. The cost of laying the heating pipes alone is very high. Moreover, the Guizhou heads in the village, in winter, You can also use the stove to boil water for cooking, so there is no need to popularize heating, but in those shops, a stove takes up space and is inconvenient, so it is more suitable to use heating for heating."

"So that's the case. It's okay to use it in the store. It seems that this business can still be done."