"Xu Chuan, wake up."

In confusion, Xu Chuan felt that someone was calling him. He wanted to open his eyes, but it felt very difficult. He felt like he had experienced a very long journey, and he felt like he had a very long dream, and he was very tired.

"What's wrong with you today? You're still sleeping after the lunch break."

The sound in my ears came again, and Xu Chuan suddenly opened his eyes, and the bright sunshine outside the window spread on the wooden desk.

In front of me is a huge blackboard with white chalk words on it.

Aside him, a boy who looked seventeen or eighteen years old was looking at him strangely.

Xu Chuan was stunned for a moment, and the memory in his mind suddenly appeared. A rapid drop of weightlessness was stimulated by him, and he grabbed the desk in front of him until the feeling of falling dissipated and the solid touch from his feet calmed down a little.

After taking a few deep breaths, Xu Chuan raised his head and looked around. In the noisy classroom, some familiar and unfamiliar faces emerged from his memory.

"This is Class 1201, Senior High School?"

"Did I have a dream? Or did I travel through time and go back twenty years ago?"

"If it were a dream, how could those memories be so real?"

Looking at the familiar and unfamiliar classroom, Xu Chuan was a little confused for a moment.

The memories of the future in my mind are extremely clear, and the scene of the crash is even more real and terrifying.

"What's wrong with you? Have you caught a cold? Go to the infirmary?"

A voice came from my ears, Xu Chuan raised his head, looked at his former deskmate, and shook his head.

"I'm fine, I'll go out for a walk."

......

Outside the teaching building, the playground with gray concrete floor tiles was extremely flat. Xu Chuan walked on it, and some of the students were scattered, which also brought him some memories buried deep in his mind.

After finding a stairs to sit down, Xu Chuan looked at the two blooming iron trees not far away, and a bitter smile appeared on the corner of his mouth.

He didn't expect that he would come back like this.

You should know that some of the plane were not only him, but also officials who accompanied him back to China, and those of the country themselves, and even an important figure who followed the visit.

In addition, there are nearly 300 ordinary passengers and crew members.

Coupled with the exchanges from the country, I thought I could return to China safely under such multiple guarantees, but I didn’t expect that I could still not come back.

Unfortunately, before his death in his previous life, he was only one step away from his motherland, but he still had not entered the territory of his motherland.

......

Sitting quietly on the steps for a while, relieved his emotions, Xu Chuan stood up, patted the dust on his pants, and turned around and entered the classroom.

The familiar desk, the familiar textbook, the familiar classmates, everything is exactly the same as the scene he remembers when he was seventeen years old.

"Am I really reborn?"

Xu Chuan touched the thick textbooks on the table that were erected with books, and felt the thickness and touch of the book with his fingers. It was very real, and it also made him fascinated and confused, and he was also a little scared, afraid that this was just a dream before the crash.

"Even if it's a dream, please do it for a long time."

Xu Chuan raised his head and looked at the bright sunshine outside the window, with a bright and resolute smile on his face.

......

"Lingling lingling..."

The harsh ringtone echoed in the campus.

In Class 1201, a middle-aged man with a thermos cup and a thicker test paper under his arms walked into the classroom. The originally noisy classroom quickly calmed down.

"It's almost over. This class will be conducted first. The class leader will divide the test papers. Don't think about cheating, that's meaningless."

The middle-aged man named Tang Gaoyuan, he is the physics teacher in Class 1201 and the head teacher in Class 1201.

Tang Gaoyuan looked at the students in the classroom with a solemn expression, put the test paper in his hand on the table, and then added a sentence.

"Xu Chuan and Cao Weicai come with me first."

Xu Chuan stood up and walked out with another boy with heavy eyes.

"Teacher Tang."

"Teacher Tang."

In the corridor, Tang Gaoyuan was drinking the tea in the thermos cup in a small gulp. Xu Chuan and Cao Weicai greeted each other respectfully and stood aside.

For Xu Chuan, Tang Gaoyuan was his physics enlightener. He taught him physics since he was in his first year of high school. It can be said that without him, there would be no self who stood at the peak of physics in later generations.

Seeing the two, Tang Gaoyuan smiled gently, completely different from his serious face in the classroom before.

"This year's mass election candidates are about to start. I'll sign up for you. You can prepare for it. The training will start in a few days. I hope you can get better results this year than last year."

Normally, unless students in senior high school are particularly outstanding and have enough confidence to enter the national training team, they rarely participate in competitions like competition.

Generally, the main players who participate in competitions such as the competitions of the economy and the number competitions are all senior high school students.

After all, most students still need to take the college entrance examination, and participating in the competition is a time-consuming and energy-consuming task.

But it would be different if you can join the national training team. Every student who can join the training team to represent the country has a university rush to join the university.

These two are in front of you. Both Xu Chuan and Cao Weicai entered the training team in their second year of high school. It can be said that it was the most glorious year for Xingcheng No. 1 Middle School in recent years.

"Sports of the World?"

Xu Chuan was slightly confused, and then realized that it was IPHO. At the same time, the deep memories in his mind were also revealed.

IPHO refers to the International Physics Olympics. The age of participants shall not exceed 20 years old on June 30 of the year of the competition.

It is held once a year and is hosted by the Member States that make up the IPHO in turn.

This member state basically covers most countries in the 18 regions around the world.

Almost all countries in the world send out the five most elite high school students, and then fight on the physical battlefield to compete for the first place.

He participated in this competition last year and the first year of high school last year. In the first year of high school, he barely entered the provincial team and entered the national finals due to insufficient knowledge reserves, but he was unable to play in the country. Last year, he successfully entered the national team and entered the final world championship, but unfortunately he did not win the gold medal.

This chapter is not finished yet, please click on the next page to continue reading the exciting content behind! It is late August, and it is almost the time when the first round of IPHO selection in China began. According to the historical development before rebirth, he will also participate in IPHO this year and successfully join the national team to fight with students from other countries.

It’s a pity that although he successfully won the gold medal in IPHO next year, he did not win the ‘absolute winner’, and was two points behind the Korean players’ experiment.

The so-called absolute winner is the contestant with the highest score in the competition. In addition to winning the gold medal, he will also receive a special award, which is also his regret.

However, when it comes to IPHO, Xu Chuan remembered another competition, the International Mathematics Olympiad (IMO).

The reason why he remembered this was because he remembered a piece of news he knew before he was reborn.

......

Rebirth brings Xu Chuan not only various scientific research knowledge in his mind in the next twenty years, but also the general international trends in the future and some other news.

It's 2014 now, if there is no problem with some memory in his mind.

From the time when I don’t know when to 2017, the country across the West Coast has increased its penetration of other countries, and various information activities are stronger and more frequent than before.

Moreover, for this event, the country on the West Coast adopted a brand new information security method to communicate and transmit information.

This information security communication method is based on a mathematical law. Only by finding this mathematical law can the information inside be deciphered.

But the key is that the logic and functions in the mathematical rules used by each intelligence are different, and it takes a certain amount of time from intercepting the other party's intelligence to manually deciphering it.

Often, it is this time difference that the other party has completed the information transmission.

According to what Xu Chuan knows, starting next year, we will start seeking help from math students who have participated in IMO competitions. Of course, it may also be to put these questions into the learning scope of the competition students.

He had never looked at those math problems, because when he learned about this later, these things had already passed.

But if you think about it, you will know that those questions are definitely not answered by ordinary high school students, college students and even graduate students.

Those who can design this set of mathematical rules and use them for national invasions are definitely not vegetarians.

Although high school students who can reach the IMO finals and win medals are very talented in mathematics, the effect they can play will not be very important in the face of such a thing.

So it is most likely that it will be the latter.

However, for Xu Chuan, this is an opportunity to get involved in this matter. If he can show enough mathematical talent in the competition, he may be able to participate in this matter.

......
Chapter completed!