"Coming?" When Junxin walked to the auditorium of the Department of Mathematics, Gu Mengxue, who had been waiting there for a long time, greeted him and asked with a smile.

"Hey, why are you here too?" Junxin asked in surprise. Yesterday, before resting, he was still thinking about whether to call his girlfriend Gu Mengxue over to witness his glorious moment, but in the end he still didn't call her. The discussion of mathematical problems was too boring, and he didn't want Gu Mengxue to feel bored for a long time. But in the end, I didn't expect her to come by herself.

"Why didn't you call me?" Gu Mengxue blamed.

"I'm afraid you're bored!" Jun Xin shrugged his shoulders and said, "The discussion of mathematics is actually a very boring thing, especially the content of number theory that I want to talk about today, and it is the boredom of boredom for laymen, although I really want to see you confused, but this time is too difficult, I can't bear to let you suffer with it!" ”

"You have a conscience!" Gu Mengxue smiled and said, "But today is your important day, how can I not come?" ”

"Well, since you're here, then you have to endure it for a while, and my optimistic estimate is that it may be very long."

"It's okay, everyone is here, and I won't feel lonely!" Gu Mengxue smiled and pointed in a direction, Jun Xin followed the direction pointed by Gu Mengxue, and was surprised to find that several classmates who had gone to Princeton with him as exchange students had come to this auditorium.

Jun Xin naturally would not snub his compatriots, so he took Gu Mengxue's hand and walked over there.

"Why is everyone here?"

"Can't you come?" It was Chen Xiuli who spoke, and she was also the leader of this batch of exchange students, "Today is also your important day, can you do it if you don't come?" ”

"It's just a degree, it's not a big deal!" Junxin didn't pay much attention to this thing, and he didn't get a doctorate from Princeton University, and although he thought it was interesting to get it again, he didn't care too much about it.

"A degree? This is the first person from Mizuki University to earn a Ph.D. at Princeton University since the resumption of the college entrance examination, so is it really not important to you at all about such an important matter? Chen Xiuli said with a blank look.

"If you say yes, that is!" Jun Xin shrugged his shoulders and said, "But in the next period of time, it will definitely make you feel very boring, I hope you can endure it." ”

"Haha, we don't have anything to do with each other, anyway, if you don't understand it, you can't understand it, and we don't require ourselves to be able to understand your heavenly papers, you can do it yourself."

"Okay, you go first, Mengxue is on our side!"

"Thank you!" Junxin greeted them one by one and turned around and walked towards the stage, the time was almost up, and he was not as leisurely as yesterday now.

"Jun, this way!" As soon as he walked to the stage, he saw Professor Thurston walking in with a tall, red-nosed man, who was familiar to Junxin, who had studied Langlands's program, none other than Robert Langlands, the proposer of Langlands's program.

"Hello Professor Thurston, and this is Professor Langlands, it's a pleasure to meet you, it's my honor to have you come to my dissertation defense ceremony."

"No, it's my honor, I raised this question four years ago, I thought it would take at least thirty years to break through this problem, but I didn't expect you to surprise me just four years later. Don't mention how surprised I was when I got a call from Charles. ”

"Thank you for coming, and I would like to ask you to comment on the flaws in my paper, after all, you are the one who raised this question, and there is no one else who has studied this issue." Junxin said modestly.

"Haha, I'm afraid I won't have a chance to bring it up, after all, the paper only came to me yesterday. But I think after the dissertation defense ceremony, we can have time to discuss these issues, if you don't mind. ”

"It's my pleasure!" Junxin smiled and agreed, in fact, after he threw out this thesis, he had already thought that he would encounter such a thing after the thesis defense. However, the communication between mathematicians and mathematicians was originally what Junxin wanted to see.

"Okay, Robert, today is your day, we don't want to take up too much time, your position is over there, let's go over first!" Seeing that the two were chatting more and more happily. Professor Thurston interrupted the conversation at the right time.

"Haha, it's indeed his big day." "It reminds me of my time at Yale, but my doctoral dissertation defense wasn't as grand as his dissertation defense. ”

"Haha, don't talk about you, we don't have this treatment either, Robert!" A calm voice with a hint of joy came, and Junxin didn't have to look back to know that it was Professor Mirno.

"Dear Professor Mirno, it's been a long time, how are you doing?" Langlands asked. He had been a fellow at the Institute for Advanced Study in Princeton, where he had a time and was very familiar with Professor Mirno.

"Of course, it's good, since you came to Princeton University, the university and the institute have become very lively, and some long-standing issues on the differential geometry side have also had some ideas in this year's long-term thinking discussion." Professor Mirno said with a smile, and then said with some regret, "It's a pity, Jun will return to China after the semester, and there may be fewer and fewer days like this in the future." ”

"Okay, dear Professor Mirno, the dissertation defense ceremony is about to begin, please hurry up and take your seats, there are many students from the mathematics department of the university who have come to observe, many of them have not yet entered, you two are not in this place, right?"

"Haha, okay, okay, I'm going to take a seat now!" Professor Mirno is currently the highest-ranking person at Princeton University, and he is the chair of the dissertation defense committee.

"Jun, even if you are the greatest graduate of Princeton University in history, I will not show mercy, you have to show a lot of energy!" Putting away the playful application, Professor Mirno was still very dignified.

"Don't worry, this is the big day of my life, I naturally won't have any place to relax, you will see a high-level thesis defense, I promise!"

"Then I'll see!" Professor Mirno smiled indifferently, then walked to his seat.