Looking at the four students who were entangled in front of him, Xu Chuan smiled and said, "You don't have to give me an answer now, you can think about it more." ”

"Whether it is to follow me to China or stay in Princeton, I have no problem with it, and I am happy to accept it."

"Go ahead, go back and think about it."

He didn't let the four of them make a choice now, and the resignation of the tutor during the doctoral study is indeed a big deal for the student, especially the tutor who needs to change countries with him, not everyone can accept going with the tutor.

After sending off a few students, Xu Chuan wondered who would go back with him.

Among these four students, the most likely should be Gu Bing.

Of course, Gu Bing will not necessarily return to China with him, but the possibility is greater than that of the other three.

He doesn't really care about this either.

He would be glad to follow him; If you don't follow him, he just arranges it.

......

The last two days of the briefing passed quickly.

On August 9, under the arrangement of the host Brazil, the nine-day International Congress of Mathematicians finally came to an end with a theatrical performance full of characteristic culture.

It is worth mentioning that nine full days have passed since the report meeting, and the Brazilian police have still not been able to recover Professor Gaucher's mobile phone and medal.

Finally, at the closing ceremony, the International Mathematical Union held a special award ceremony to re-award a medal to Professor Kaucel Birkall, which was not a regret.

"The security in Rio de Janeiro is really bad, and there are thieves who sneak in and steal Fields medals at the International Conference on Mathematics, which has never happened in previous exchanges."

At the award ceremony at the closing ceremony, sitting next to Xu Chuan, Fefferman sighed and said.

In the field of dynamical system mathematics, South America is very strong, and it can even be said that it is at the forefront of the world, and there are many famous mathematicians who have gone out from here.

For example, top mathematicians such as Jacob Paris, Artur Ávila, and Da Costa are.

This is one of the reasons why this mathematical conference was chosen to be held in Rio de Janeiro.

Although the International Union of Mathematicians was also concerned about the security situation in Rio de Janeiro, it did not expect it to be so serious.

Unexpectedly, on the first day, the gold medal of the Fields Medal winner was stolen.

And the attitude of the Brazilian police is that even dogs will shake their heads when they see it.

After the staff of the International Mathematical Union called the police, the Brazilian police only arranged for a police officer to come over to understand the situation, made a simple registration, and did not even call up the surveillance, completely looking like they did not want to deal with the eucalyptus.

Such a sloppy attitude made many scholars who participated in the congress completely disappointed Brazil.

It is estimated that for a long time in the future, mathematicians and even scholars in other fields will not vote for the location of the conference here.

Xu Chuan smiled and said, "The law and order are indeed terrible, but for Professor Cowchel, this may be memorable." After all, he was the first man ever to win a Fields Medal twice. ”

Of course, it will also remind him to remember to take care of his belongings when he goes out in the future."

Feverman was stunned, then smiled: "You're right, winning the Fields Medal twice, this is definitely memorable, maybe Professor Cowchel should treat us to a big meal?" ”

After a pause, he continued: "How are you thinking about immigration?" ”

Xu Chuan thought for a while and said, "I need to go back first, and then I'll talk about it." ”

Feverman: "I still hope to continue to work with you, the NS equation is a very good research direction, even if we can't prove it, we can get a lot out of it." ”

Xu Chuan shrugged and said: "Cooperation has nothing to do with anything else, now the network and transportation are so developed, even if it is at the end of the world, it can still be." ”

"Yes." Feverman nodded, and continued, "It's just that there is a difference between communicating in person and across the Internet. ”

"Besides, I feel like you already have an answer in your heart."

Hearing this, Xu Chuan smiled and said, "When I make up my mind, I will definitely call to tell you." ”

Peverman: "I'll wait. ”

......

After the International Mathematical Congress ended, Xu Chuan was also ready to pack up his things and return to China.

After three years abroad, I said I didn't want to go home, which was false.

"Professor, are you still at the hotel?"

In the room, Xu Chuan was packing up his things, the mobile phone on the table rang, the phone was connected, it was his student Gu Bing calling, it seemed that he had made a choice.

"Well, it's still in the hotel." Xu Chuan responded.

"Okay, I'll come over right away, please wait a little longer, Professor." Gu Bing said a word, and then hung up the phone.

Xu Chuan didn't care and continued to pack his luggage.

After a while, the doorbell rang.

Opening the door, Gu Bing walked in from inside.

"Professor, will you go back to work at the university, or will you go somewhere else?"

Xu Chuan: "I should be a professor at NTU. ”

Hearing this, Gu Bing nodded and said, "In this case, can I go back with you?" ”

Xu Chuan stopped his movements and asked, "Have you thought about it?" In fact, it is also a very good choice to continue studying with Professor Deligne in Princeton, and with a Princeton diploma, it will be easier to find a job in China in the future. ”

Gu Bing smiled: "It's not bad, and if it weren't for the professor, I wouldn't have been able to enter Princeton, I have applied to Princeton three times, but no one chose me." ”

After a pause, he continued: "What's more, Professor you are a Fields Medal winner, follow you, I can eat and drink spicy ...... in China."

Before Gu Bing finished speaking, the doorbell in the room rang again.

Xu Chuan walked over and opened the door, and the person standing outside the door surprised him a little.

"Amelia, why are you here?" Looking at the students standing at the door, Xu Chuan asked with some curiosity.

At the door, Amelia bent the crescent moon and said with a smile: "Of course it's looking for a mentor, could it be that there are others here?" ”

"Uh....." Xu Chuan was stunned for a moment, and then smiled: "Come in first." ”

"Senior Brother Gu, you're here too."

Walking into the room and looking at Gu Bing, Amelia said hello and then asked curiously, "Senior Brother Gu, are you also going back to China with your mentor?" ”

"Me too?"

Gu Bing looked at the youngest junior sister in surprise, paused, and then said, "Do you also want to go to Huaguo with your mentor?" ”

Amelia nodded and said with a smile: "I am very interested in Huaguo, I heard that there are a lot of delicacies there, and there are giant pandas, so I thought I went to study abroad." ”

Gu Bing looked at Amelia silently, a little unsure of what to say.

He followed Xu Chuan back and said that it was in the past, after all, Huaguo was his home.

Amelia followed the past, which was a little puzzling.

Not to mention that her father was a professor at Princeton, Xu Chuan also arranged for him Edward Witten as a follow-up mentor, plus Princeton, it is obviously better than NTU, I don't understand why she chose to go to NTU instead of staying in Princeton.

"You want to come with me to Huaguo?" On the side, Xu Chuan just closed the door and walked over, and after hearing Amelia's words, he almost didn't stand firmly, and his left foot tripped and his right foot fell to the ground.

"Of course!" Amelia nodded.

The corners of Xu Chuan's mouth twitched, and he said, "Don't make trouble, your father is in Princeton, and I also said okay here, what are you doing with me in Huaguo?" ”

"I didn't make a fuss." Amelia replied seriously, "I've thought about it, and my father agrees. ”

The corners of Xu Chuan's mouth twitched again, and he said helplessly: "No, what are you doing with me in Huaguo?" Princeton is good, it's better for you than Huaguo. ”

Amelia waved her hand and said, "It doesn't matter if you're suitable or not, it's important to learn more, I think it's more promising to follow you than to follow Professor Witten." ”

After a pause, she continued, "Besides, I know Chinese." ”

As she spoke, she said in Chinese: "I heard that there are a lot of delicacies in Huaguo, and I want to eat the whole of Huaguo in the next few years!" ”

Amelia spoke, and Xu Chuan and Gu Bing were stunned.

Good guys, this is still really Mandarin, although it is not so standard, intermittent and unorganized, but it is no longer a problem to use it for domestic communication.

"When did you learn Chinese?" Xu Chuan asked in surprise, after taking this student for several months, he had never heard of her knowing Chinese.

When I was in IPO before, I didn't see Amelia speak Chinese.

"I started learning more than three or four months ago, and I watched some teaching videos." Amelia smiled and said: "By the way, there is a website called bilibili in China, I have watched a lot of videos on it, Chinese is really interesting, one word can express a lot of meaning." ”

"For example, I watch a video of a quarrel, and there are a lot of meanings in it that are not meaningful, and there are also a lot of meaningless, so is it interesting or not?"

Amelia opened a pair of blue eyes and looked at Xu Chuan with interest: "I still haven't figured out what the meaning in that video means, Chinese is so interesting, maybe I should go to Huaguo to study to figure it out." ”

For a while, Xu Chuan didn't know what to say.

If you can figure out what it means, it will be too rebellious.

It takes three or four months to master a foreign language, or Chinese, which is extremely difficult, and Amelia's talent gives her time to master dozens of languages.

This is probably a quantum computer core brain, right?

"You want to go to China with me just to eat and learn Chinese?" Suddenly, Xu Chuan asked curiously.

Amelia nodded, her eyes brightened, and she replied with a smile: "Of course, but eating and Chinese are just one of the goals, in the past few months, I have learned a lot from you, whether it is mathematics or physics, you can perfectly answer my questions." ”

After a pause, she looked at Xu Chuan, and then said, "And I always feel that you are even more powerful than Professor Witten." ”

Xu Chuan sighed: "I think you better think about it, this is not a trivial matter." ”

......

In the end, Xu Chuan still didn't beat Amelia, just like the other party pestered him to be his student.

Of the four students, Amelia and Gu Bing chose to go with him to continue their studies in Huaguo, while Shashi Perez and Roger Dean chose to stay at Princeton.

Everyone has their own ambitions, and Xu Chuan has no opinions.

Before leaving, all four students were sent to the airport to say goodbye to him.

"Roger, Shahi, even if I'm gone, remember to study hard." At Rio de Janeiro International Airport, Xu Chuan patted the two students on the shoulder and said goodbye with a smile.

"I'll do my best, mentor." Roger Dean nodded vigorously, although Xu Chuan only taught them for a few months, he was a teacher for one day and a teacher for life.

What's more, with their original conditions, there is a high probability that they will not be able to apply for Princeton, and it was Xu Chuan who gave them this opportunity. Not only did they enter the mecca of mathematics in Princeton, but they also had two Fields Medal winners as mentors.

"Roger and I will remember to visit you, Professor." On the side, Shashi Perez, who is not a proper person on weekdays, also stabilized.

"I hope that in four years' time, I will see you standing on the stage in St. Petersburg and giving a presentation."

Xu Chuan smiled and waved his hand, said goodbye to the four of them, and then turned around and walked into the waiting hall.

After a while, a silver-white passenger plane slowly slid towards the runway and finally disappeared into the sky.

......

After a turning point, from Brazil to Europe, and then to the capital, more than ten hours of travel passed, Xu Chuan looked at the bustling city under his feet, and there was a trace of waves in his heart.

From the past life to the present life, to this day, those memories are still deeply imprinted in the mind, and they will not be erased by time.

】

The plane descended slowly, stopping at the end of the runway.

Xu Chuan dragged his luggage and walked towards the exit with the other passengers.

In the reception hall, a group of people in suits and leather shoes were standing looking at him with smiles on their faces.

Seeing this group of people, Xu Chuan was slightly stunned.

Before returning to China, he knew that he would come to the airport to pick him up, but he didn't expect that there would be so many.

At a cursory glance, there were probably thirty or forty people in the reception hall. And in the crowd, there are also many people he is quite familiar with.

Looking at Xu Chuan in the hall, Academician Pan Deming, who was standing in front of the group of pick-up lineups, walked over quickly with a smile on his face, driving the others forward together.

"Professor Xu, welcome back." Academician Pan Deming enthusiastically stretched out his right hand with a bright smile on his face.

"Academician Pan." Xu Chuan let go of the suitcase and shook hands with the old man in front of him with a smile.

On the side, in the crowd of pick-ups, another old man who did not look low walked over with a smile on his face.

"Professor Xu, welcome home." The old man walked up to Xu Chuan and stretched out his hands with the same enthusiasm.

Although Xu Chuan hadn't seen him, he also guessed that this person's identity was not low, because Mu Liangcai, who had previously flown to Brazil, was standing on the side, and Mu Liangcai was the deputy ministerial-level leader of the organization, so he could only stand aside to accompany him.

"Professor Xu, this is Minister Qin Anguo of the Science and Technology BU." On the side, Pan Deming introduced with a smile.

Hearing this, Xu Chuan suddenly understood that the number one leader of science and technology bu, this status is needless to say. He smiled and stretched out his hand, shook his hand and said, "Hello Minister Qin." ”

The reason why he flew in the capital today, instead of Jinling or the Demon Capital, was that this Tomurian brought a message to request.

Qin Anguo waved his hand, with an approachable smile on his face: "Don't be so polite, we are all a family, our own people, if you don't mind, just call me Uncle Qin." ”

Xu Chuan smiled and glanced at Mu Liangcai next to him, these two routines are the same.

Mu Liangcai didn't care about Xu Chuan's eyes, and said with a smile: "Professor Xu, I'm tired after taking the plane for so long, let's get in the car and go to the hotel first, and then talk about the old days, and pick you ......up."

.......