In the morning, Ren Xiaosu was reading books in the library, while An Yuqian sat at the door of the library, leaning against a chair and sleeping soundly.

If the sunlight shines on An Yuqian's face from outside the door, An Yuqian will also buckle the book on his face to block the light.

Every morning when Ren Xiaosu comes, he will consciously bid ten yuan for An Yuqian, and An Yuqian doesn't need Ren Xiaosu to call and urge him. He yawned at the door at 8:30 every morning.

Gradually, An Yuqian felt that it was very uncomfortable for him to be like this. He used to play mahjong all night and then had a good sleep at home in the morning.

As a result, after the man named Ren Xiaosu came, he could only sleep on a chair in the library!

Can you sleep comfortably in bed when leaning on a chair?

While there was no one in the library, An Yuqian specifically observed what book Ren Xiaosu was reading, but he almost laughed to death. It turned out to be a textbook for mathematics, physics, and chemistry in the first year of high school!

Ren Xiaosu insisted on coming to the library for so many days, which finally made An Yuqian look at it with a little attention. An Yuqian thought to himself that this library had finally come to a good student, but he was reading a first-year high school textbook.

Judging from Ren Xiaosu's age, how could he have to go to the third year of high school? Is he a poor student who started tutoring from scratch?

An Yuqian calculated by his fingers. There were only three months left before the college entrance examination. Is it time to study in the first year of high school?

Let An Yuqian walk around, Ren Xiaosu didn't even look up at him.

An Yuqian couldn't help it: "You're a little too late to make up for the lessons now. It's only three months before the college entrance examination!"

Ren Xiaosu looked up at him: "I won't take the college entrance examination."

"Don't take the college entrance examination? Then what are you studying for math, physics and chemistry in the first year of high school?" An Yuqian was shocked: "Don't you go to the factory after graduation? What's the use of learning this thing?"

"All knowledge is useful, the knowledge learned is your own," Ren Xiaosu said calmly.

An Yuqian shrugged and turned around and left: "Don't forget to just before breakfast every day. If it weren't for you, I wouldn't have to eat breakfast at all. This expense was because of you..."

"I understand," Ren Xiaosu said.

However, An Yuqian suddenly discovered that in addition to Ren Xiaosu, there were still a group of students who suddenly read books in the afternoon without any impact.

There are more than 20 male and female classmates, and they sit in the library for an afternoon, for several days in a row.

You should know that although there were people reading books in the past afternoons, they were not so frequent and stable, and the number was so neat. This group of students... actually sat next to Ren Xiaosu in an organized and disciplined manner.

After An Yuqian woke up in the afternoon, he turned over and took a look and found that Wang Yuchi and others were reading books related to mechanical manufacturing, which had long exceeded the high school outline.

When the library was closed, Wang Yuchi suddenly said to Ren Xiaosu: "Squad leader, it's time to close the door and go home?"

An Yuqian was stunned on the spot. This young man who gave him breakfast money every day was actually the class monitor of this group of students? Ordinary students learned things beyond the syllabus, and the class monitor was studying for the first year of high school by himself?

What a mess...

Ren Xiaosu looked up at the sky: "You guys go back first, I'll look at it for a while."

"Hey," An Yuqian couldn't sit still: "I should get off work, do you know!"

"Give you 50!" Ren Xiaosu said without raising her head.

An Yuqian was unhappy: "That's not OK. I should play mahjong. Maybe I can turn the book tonight!"

Ren Xiaosu quietly put the book back on the bookshelf, turned around and left.

The next morning, Ren Xiaosu's first sentence when he saw An Yuqian was: "Have you turned the book back?"

"Why are you so broken, your child?" An Yuqian's toothaches: "Is this what you should ask?"

"That's the compensation," Ren Xiaosu gave An Yu the first ten dollars: "Go for breakfast."

An Yuqian held ten dollars in his hand and felt insulted...

In the afternoon, when Wang Yuchi and the others came back, An Yuqian suddenly sat opposite him. Ren Xiaosu looked up at him in surprise: "Is there anything wrong?"

An Yuqian said: "You are the knowledge of main-maintenance machinery manufacturing, but you are reading the wrong book!"

Ren Xiaosu frowned, he glanced at the book in the hands of Wang Yuchi and others: "What should I think?"

Without the teacher's guidance, they could only grop forward like a rock crossing the river, and the progress was extremely slow.

Although Jiang Wu is a teacher, Jiang Wu is a Chinese teacher...

At this time, An Yuqian said, "500 yuan, I'll tell you what to see!"

As soon as he finished speaking, Ren Xiaosu threw five hundred yuan over. Wang Yuchi whispered beside him: "Squad leader, why do I feel like he is a liar?"

Ren Xiaosu shook his head: "The liar won't even have breakfast."

An Yuqian almost cursed, saying that he was implicitly slandering that he was not even qualified to be a liar!

An Yuqian sneered and said, "If you want to learn mechanical systems, don't just want to learn others to run before you learn how to leave. You have to learn mathematics and physics first!"

Ren Xiaosu leaned on the back of the chair and listened silently, while Wang Yuchi and others had already started to open the book and were about to take notes.

"I suggest you first take a look at "Mathematical Analysis" written by Chen Jixiu as an introduction, and then linear algebra is a must-learn. You don't learn enough in high school courses."

"Don't read "Public Things"," An Yuqian threw a book on the table: "Just look at this Feinmann handout."

"Real analysis... Forget it, don't look at this for now."

"As for mathematical and physical methods, it depends on Wang Dexin. Everyone talks about things like real variable functions, special functions, mathematical equations, etc., and there is no big difference."

"You have to watch Retong."

"You should also look at electrodynamics."

An Yuqian talked endlessly for half an hour. Ren Xiaosu felt that it would take several years to learn this. As a result, An Yuqian smashed his mouth and said, "This is just a beginning. If you really want to involve in the profound mechanical manufacturing, you are still far from it!"

Ren Xiaosu understood that he was here to show off his words...

However, Ren Xiaosu suddenly realized that An Yuqian was not an ordinary person. Even a liar would probably not recite so many things to earn 500 yuan. The key point is that no one can teach him to recite them.

Ren Xiaosu looked at An Yuqian and said, "You come and teach them, I will pay you 500 per class."

An Yuqian's eyes lit up, but he immediately became reserved: "My time is precious..."

“400.”

"Hey, why are there fewer and fewer people?"

“300.”

"I teach you! 500! No penny can be lost!"

Ren Xiaosu then laughed: "If you can't teach well, I won't pay."

"Can I teach you well?" An Yuqian's eyes widened: "I, An Yuqian... Forget it, you don't understand if you tell you!"

But An Yuqian suddenly felt that the boy in front of him might be more complicated than he thought. Who would pay 500 yuan for a class in an ordinary student?

...

The fourth is to make up for yesterday's.

Recommend a friend's book, the author of Yushouzhai's new work "The Dragon King is in the Top"

Introduction: The uproaring super pet warriors are submerged in the long river of history.

Mechanical civilization rose in the siege of the Sand Zerg.

The former Canglong warrior has disappeared, and now the divine mecha protects human civilization.

Zhang Qingyang and the arrogant cat accidentally embarked on the Long March of searching for pet civilization... (The above recommendation will not be charged for an additional fee if it is less than 200 words.)
Chapter completed!