In the high math class, Yang Rui listened very carefully.

Although some people can learn advanced mathematics through self-study, it is really only some people. In fact, there are many ways to learn mathematics, but only for a few people.

For example, the famous Mr. Hua Luogeng, his way of reading is very distinctive, get a tome of mathematics, Hua Luogeng's approach is to look at the first few pages, then close the book, close his eyes and meditate, and then directly turn to the last page of the tome to see the answer, if the answer is correct, the book is considered to have been read.

This way of reading is really efficient, Hua Luogeng himself has read countless books in this way, but in reality, there are really few people who can use this method.

Yang Rui has no talent for mathematics, and he does not pursue high-level mathematical skills, but he just needs to reserve some mathematics.

Historically, although there have been some creatures who are extremely mathematically proficient, this is not a necessary requirement.

In Yang Rui's view, although the creature of mathematical genius is rare, it is not uncommon on college campuses, and it is enough to find it at any time, such as Zhao Pingchuan, an ordinary genius who is not even a mathematics major, is enough for ordinary biology to use.

However, Yang Rui's own mathematics reserves are still far from enough, and he is fortunate to study at Peking University, so he will not waste the opportunity, no matter how busy he is in the room, high math classes will always come.

At Peking University now, the focus of education is undoubtedly in the undergraduate class, and almost the best professors, including the former academician-level Daben, will try their best to give lectures to the undergraduate class, which is only the elite education of the 80s - the most open attitude, the most free thinking, the best students, the top professors, and the most concentrated resources.

This kind of educational quality is difficult for future generations to enjoy, even doctoral students. In fact, doctoral students no longer attend classes, and in most cases, doctoral students learn and work in the process of research, no different from lecturers and teaching assistants in universities, but after 30 years, if you want to enjoy the small class teaching of high-level professors in the 80s, you can only go to Cambridge Harvard.

Yang Rui is extremely attentive to courses such as advanced mathematics, and he will do exercises and so on when he has time, and in terms of progress, he can be regarded as superhuman. At the end of a class, he ran to the podium to ask the professor.

After all, Yang Rui is a person who has read a stubble, and there is no problem in the short term if he goes to the first level of advanced mathematics.

The current professors are also happy to answer, and they will not leave in a hurry after class, and it is only four or five years before the resumption of the college entrance examination, and many professors have just returned to school, which is the time when enthusiasm bursts out......

Yang Rui lingered in the classroom for a while, but it made Chen Yi and the others outside anxious, and had to hide behind the classroom to determine Yang Rui's behavior.

And when Yang Rui finished the problem and went out, Chen Yi was flustered again, and he ran fast to catch up with him.

"Mr. Yang. Chen Yi panted behind Yang Rui: "I have found out about the stamps and made a list, do you want to take a look." ”

"Look as you go. ”

"Wait a minute. Chen Yi flipped through his shoulder bag and handed a notebook to Yang Rui.

20 sets of "Mei Lanfang" and 100 sets of "Love Science from a Child...... Although it is a relatively ordinary stamp, it is indeed of relatively high value, such as a set of Anita Mui, which can be sold for hundreds of yuan in the 80s.

However, there is still a big gap between such stamps and the number of stamps and Yang Rui's expectations.

He flipped through it casually, and did not stop until he saw the full set of military mail.

Military stamp in the philatelic world, usually refers to the "Yellow Army Post", "Purple Army Post" and "Blue Army Post", the most famous of which is the Blue Army Post, which was auctioned at a high price of 800,000 yuan in 94 years, as for the whole set of military mail, its price is as high as one or two million.

In Xiao Chen's notebook, the price of this set of stamps is 6,000 yuan, which is more expensive than 20 sets of Mei Lanfang, but the appreciation space is much larger.

Of course, such a complete set of military mail is hard to come by, and it is excellent to stay.

Yang Rui closed the notebook and asked, "These are all confirmed by the other party to be sold?"

"Of course, it's sure to be sold. ”

"I only want all the quality, the price is collectively discounted, I want it all, if I can, I will trade. Yang Rui handed the notebook back to Xiao Chen, shook his hand and left.

Xiao Chen was stunned for a while, and he didn't know if it was good or bad, so he hurriedly went back to report the news.

The next day, there was another round of bargaining, and Yang Rui won 8. At a 5% discount, I bought all the stamps of the other party, which made everyone in the branch office excited.

The transaction of more than 30,000 yuan, taking out the money in one go, and even the counteroffer is not particularly powerful, such a local tyrant naturally makes people feel the flavor of people who are stupid and come quickly.

Moreover, the original owner of the stamp also bought 2,000 yuan of treasury bonds to show his gratitude, which is better than any special medicine for the director of the bank who sold the treasury bonds and sold heart disease, and at the same time prepared to introduce more stamp collectors to Yang Rui.

In school, rumors that Yang Rui earned manuscript fees to buy treasury bonds were also widely circulated.

Since the New Year's Day party, the super-good-looking Yang Rui has silently had the attention of the school grass, if someone else buys the treasury bonds, at most it will be discussed in the class or the department.

said that Yang Rui bought the treasury bonds, and everyone didn't care whether he really bought them, but the news flew out all of a sudden.

And it became a hot topic for the next few days.

On Friday, Yang Rui was simply blocked in the dormitory by the president of the student union.

"Join the student council. The chairman was also wearing a tweed coat, with his hands in his pockets, and said very handsomely: "The student union is a student organization, and it is also the link between the school and students, I think, Yang Rui, you are very suitable to join the student union......

He said a lot, and then looked at Yang Rui with dark eyes, as if he was waiting for him to bow down.

For current students, joining the Student Council is indeed an excellent choice. Because it is still a distribution system, the student union will have the advantage of good distribution in the first place. Although it is not guaranteed that they will be assigned to a good unit, if there is a choice, the student union cadres will always be able to get a better choice.

This is a direct benefit, very different from the indirect benefit of the student council of later generations.

However, Yang Rui didn't pursue this at all, and said with a smile: "I'm really busy in the room, I'm afraid I don't have time in the student union, I'm sorry." ”

The work of the real yàn room is an excellent privilege, especially since Professor Tang is more lax, and it is almost casual for Yang Rui to raise his banner.

His Excellency didn't seem to expect that he would be rejected when he went out in person, so he was stunned for a moment, then smiled again, and said, "You'd better think about it again, so let's take a look at our student union when you have time, and I'll give you a call." ”

……