Since the establishment of Peking University, several presidents have been replaced, and the current president of Peking University is called Zhang Jianguo, a middle-aged and elderly man over 60 years old.

Although Zhang Jianguo is nearly sixty years old, he looks as if he is only forty or fifty years old, and he is in very good health, and he will get up early from time to time to go for a morning run with students to check in.

At half past eleven o'clock in the evening, Zhang Jianguo's mobile phone, which was about to sleep, rang, and he picked up the phone and found that it was his old colleague, Zhao Qidong, now the director of the Peking University Library, calling.

"Why are you calling me at this time?" Zhang Jianguo frowned and answered the phone: "Hey, Lao Zhao, what's the matter?"

"Lao Zhang, come down quickly, go to the library, Peking University may have such a nail again this year!" came a hurried voice on the other side of the phone, as if it was trotting.

Zhang Jianguo's brows furrowed even tighter, of course he understood Zhao Qidong's words.

As the highest university for students in the country, Peking University has a few unique people every year.

But these people who are different from each other are all geniuses with extremely high IQs, or who have a talent far beyond ordinary people in some way.

It's like three years ago, a freshman at Peking University just came to the school and directly used a laptop to hack all the entire school's Internet for 20 hours, and there was no intention to hide the traces left by his computer.

After regaining control of the network, the school immediately called the new student to the principal's office to give him a lecture, but the answer was: "I tried it because I thought it was fun." ”

In the end, the school gave him a demerit punishment and punished him to write a 10,000-word review in the dormitory, and he was not allowed to go out for military training until he finished writing.

And his 10,000-word review was written for a week, and it wasn't until then that they reacted, it turned out that he just didn't want to go to military training!!

And a freshman five years ago, because of his crazy love for physics, made a dynamite on his first day at school using just some materials he could find nearby!

Afterwards, the police's explosion-proof commando team was alarmed, because the power of this explosive was equivalent to 200kg of TNT high explosives!

This shocked everyone at the time, and the freshman only said lightly afterwards: "I think explosives are quite fun, and there is no danger." ”

Everyone was glad that the freshman was just interested in working on explosives, not a real terrorist.

And these all kinds of troubled children are undoubtedly the talents most needed by the country, and their shortcomings are simply negligible compared to their abilities.

As the saying goes, capable people are born with their own personality.

It's just that the school leaders are a little crying and laughing at these geniuses, so for these students, they call them nails.

No, as soon as Zhang Jianguo heard that Peking University was about to produce nails again, he immediately stopped talking, changed his clothes and rushed to the library.

At this time, Su Yun was still immersed in the ocean of calculation, which was one of the three major mathematical ideas in the world before, Fermat's conjecture, which was Fermat's great theorem that had been proven by his ancestors long ago.

I have to say that this is worthy of the three major mathematical conjectures of the "world", the calculations in the middle, the amount of knowledge required, and the number of knowledge misunderstandings all made Su Yun helpless for a while.

However, with the increase in the past seven days and the increase in the number of materials consulted in the library today, Su Yun's proof of Fermat's conjecture began to become familiar with the road and gradually got on the right track.

Su Yun's eighteen sketches were only the last one, but his pen did not stop for a moment, always writing dense formulas and some scribbled function images.

Until all the conditions were finally completed, Su Yun began to quickly take out more than a dozen draft books in front of him and flip through them, checking them one by one, and verifying them one by one.

It had been a long time since the closing time, but Su Yun didn't realize it at all, until when there were only three pages left in the last book, Su Yun wrote at the bottom of the scratch paper: Therefore, Fermat's conjecture is true!

"Finally... Prove... It's out!"

Putting down the pen, Su Yun's hand was almost unconscious when he wrote, and he felt a little dizzy in his brain, so he took out his mobile phone and looked at the time.

“02:45”

"It's over! It looks like it's going to close!"

Su Yun hurriedly stood up, and suddenly found that there were two people standing behind him.

"Ahh I forgot to close..."

The two men seemed to be staring at his sketchbook all the time, ignoring him.

Su Yun raised his voice a little again: "That, I can now... Let's go?"

Su Yun's voice drew the attention of the two of them back, and one of them immediately came up and asked, "Classmate, what is written in your notebook?"

"Fermat guessed..."Su Yun looked at the other person and whispered.

"You proved Fermat's conjecture by yourself?" asked the man who came up to him with sudden excitement.

"Hmm... But this conjecture is really difficult to prove, I looked up a lot of information on the Internet to prove it, but I found that although most of the information and knowledge can be found on the Internet, many of the information is incomplete, and some are even wrong, and the library is too rich. ”

"I was lucky enough to come across a book about "mathematical induction", so I wanted to try to prove it with mathematical induction, and it turned out that this method was feasible. I first used the method of group theory to prove that the first term of the E- sequence of each elliptic equation is equal to the first term of a model M- sequence, and the second step ......"

"But in the end, I couldn't continue to prove it anyway, so I thought there should be a problem with this method, so I tried many methods, and finally found that it is possible to prove it through the "calculation of elliptic curves", but the amount of calculation is much more than the previous one, especially if the opening power is more than 10,000 times, it will become a little slow, but I think this method is feasible......

"Then I finished the proof of the last cluster of elliptic equations, so I think the Fermat conjecture is true. ”

The two of them remained silent, patiently listening to what Su Yun said, and finally Su Yun was a little embarrassed to find that he accidentally indulged in it again.

Rubbing his eyes a little embarrassed, he began to pack up his draft: "Well, can I go?"

The man who came up earlier immediately shouted, "Wait!!"

Su Yun, who was packing up the draft book, was startled and turned to look at the man.

"Ahem!" The person who yelled seemed to be a little embarrassed, coughed twice, and said: "This classmate, let me introduce myself first, I am the current president of Peking University, Zhang Jianguo, and this is the director of this library, Zhao Qidong." ”

After listening to him, Su Yun was even more embarrassed, what are the presidents of Peking University and the curators of Peking University libraries doing here in the middle of the night?

Seeing that Su Yun's face was a little complicated, Zhang Jianguo immediately said: "It's such a classmate, what about your draft paper that proves Fermat's conjecture, we plan to recycle it, and then check it, of course, I won't ask for your draft in vain." ”

Saying that, Zhang Jianguo looked at Zhao Qidong, Zhao Qidong nodded, and then he continued: "We can give you the key to the library, and we will clean up one of the houses on the third floor of the library as your new dormitory, and you can also live here directly at night." ”

"Of course, your future tuition, accommodation fees and other schools can give you a waiver, and the dormitory prepared for you in the library has hot water, Internet, air conditioning, and no power outage all day, how about it?"

Su Yun quickly understood the principal's intentions, this was because his talent was discovered by the principal, and he planned to focus on cultivating?

If he could have better conditions, of course Su Yun would not refuse, nodded and agreed to the principal's conditions.

Zhao Qidong saw that Su Yun agreed, and began to carefully collect Su Yun's draft on the table, Zhang Jianguo said with a smile: "You give me your ID card, and I will help you go to school tomorrow, and you don't need to go to military training and courses after that, of course you can go if you want to go, and finally at the end of the semester, your exam will be assessed by the school alone, and you don't need to take the unified exam." ”

Su Yun nodded and asked, "Then the principal, can I still enter the dormitory tonight?"

The principal seemed to be in a very good mood and waved his hand: "It's okay, you come to my place tonight to make up for the night, I still have a room there, and there will be a special person to help you move things tomorrow." ”

Su Yun didn't refuse, because at this time, he really couldn't find a place to sleep.

Although it is still September, the capital is still a little cool in the early morning.

Because of the plane and car, Su Yun, who had just arrived at the principal's house, fell asleep directly when he saw the bed.

And Zhang Jianguo returned to the room and did not rush to sleep first, but took out his mobile phone and logged in to the official Weibo account of Peking University.

After thinking about it, I edited a Weibo and sent it!

On September 1, the day when the freshmen of Peking University reported, the Internet once again fried the pot because of an official Weibo of Peking University.

The Weibo content is:

#早安, Peking University # ordinary people think that genius is terrible, and they only use 1% of their efforts to defeat 99% of them.

As everyone knows, the real scary is not the genius, but the teenager who proves Fermat's conjecture at two o'clock in the night.

Welcome all the students of the Class of 2018, and we will grow together at Peking University.

The publication time is 2:58 a.m., and the text is accompanied by a picture of the back of a teenager in the library, because it is night, the lights are not bright, but the shadow of the teenager writing can be seen.