Pang Xuelin walked on the road on the Harvard campus, although he had already been to Harvard once when he was on a lecture tour at various universities in the United States.

But for this world-renowned top university, Pang Xuelin is not familiar with the roads on campus.

He was just about to find the location of Harvard Business School in the lobby when a voice suddenly came from behind him.

"Xuelin Pang, is that you?!"

Pang Xuelin turned around and saw a middle-aged white man in his early fifties calling himself.

"Professor Gross, long time no see!"

Pang Xuelin laughed.

Cenedict Gross is a member of the National Academy of Sciences and a tenured professor at Harvard University, where he received his B.A. in 1971, his M.A. from the University of Oxford in 1974, and his Ph.D. from Harvard University in 1978 under the supervision of Professor John Tate.

Since 1985, he has been a tenured professor at Harvard University, where he has made significant contributions to mathematics and has been awarded the Marshall Prize, the MacArthur Prize, and the 1987 Cole Prize in Number Theory from the American Mathematical Association.

This is also a big man, whether it is in the real world or the last time he went to Harvard to give a report, Pang Xuelin has met him, but the two sides are not deeply contacted.

"Pang, long time no see, why did you come to Harvard, didn't Pierre say that you and Witten went back to China to do string theory research?"

Gross asked curiously.

Pang Xuelin said with a smile: "I just came to the United States a few days ago, and I just went through the entry procedures for an adjunct professor at Princeton University, and I came here today just to find a friend." By the way, Professor Gross, can you tell me how to go to Harvard Business School? ”

Gross laughed, "You're going to Harvard Business School?" Come with me, I'll take you. ”

"Alright, Professor Gross, I'll trouble you!"

Along the way, the two talked as they walked.

"Pang, why do you want to engage in theoretical physics? I have been studying your Ponzi geometry for a long time, and I feel that this theory can be further studied, and it is fully expected to solve many classical problems in number theory, such as the ABC conjecture, the Goldbach conjecture and so on. ”

"Personal interest, string theory is quite interesting, pure mathematics research can be done alone, but in theoretical physics, there are many things to consider...... In the past few years, my research has been focused on pure mathematics, and now I have changed my field to study it, and it feels good......"

"Haha, that's true, it's a good thing that you didn't continue to study Ponzi geometry, in case you make any great results, it really won't give mathematicians all over the world a way to live, and now many people are learning Ponzi geometry, trying to solve more problems on the basis of Ponzi geometry......"

Pang Xuelin smiled and did not answer.

A delicacy that can be tried once or twice, and if you eat it every day, anyone will get tired of it.

This is the case with his theory of Ponzi geometry, the real world and the wandering earth world have been published several times, and now in the rural teacher world, he was just an ordinary rural elementary school teacher before, and it is okay to take it out to brush up his reputation, but it is not interesting to let Pang Xuelin continue to take out the proof paper of the ABC conjecture on the basis of Ponzi geometry.

Anyway, in the past half a year, he has focused on the M theory, and Pang Xuelin feels that it is more meaningful.

At least in the field of theoretical physics, he feels that he is already a top physicist.

Instead of sending Pang Xuelin to Harvard Business School and leaving, Gross took him directly to the office of a professor he knew at Harvard Business School.

"Pang, let me introduce you, this is Professor Robert Merton, and a good friend of mine. Merton, this is Professor Pang Xuelin from Tsinghua University in China......

Robert Merton smiled: "Gross, I don't need your introduction, the amazing Chinese boy, the prover of Fermat's theorem, Pang, it's a pleasure to meet you!" ”

"Professor Merton, I'm glad to meet you, too!"

Pang Xuelin smiled and shook Robert Merton's hand.

Unbeknownst to Pang, Professor Merton had already made a name for himself in the field of economics, majoring in engineering mathematics before switching to economics and winning the Nobel Prize in Economics in 1997.

His book, Continuous-Time Finance, developed financial mathematics and financial economic theory based on the model that agents can adjust their decisions in continuous time.

His theories have had a great influence on money management, financial intermediaries, investment banking, corporate finance, and capital budgeting processes.

"Pang, are you here to find Mu Hui Wang?"

Pang Xuelin was slightly stunned, and asked suspiciously: "Professor Merton, how do you know?" ”

Robert Merton said: "The entire Harvard Business School, just Mu Hui Wang, a Chinese, you suddenly came over, except to find her, I can't think of any other reason." ”

Gross on the side smiled and said: "Pang, since Merton knows who you are looking for, then I won't stay longer, I still have something to do, go first!" ”

"Thank you, Professor Gross, today!"

"You're welcome! Next time, I'll go to Princeton to see you, and I hope to have a good exchange with you about Ponzi geometry! ”

"No problem!"

After Gross left, Merton looked at the watch on his wrist and said, "Pang, it's half past twelve, the morning class is almost over, let's go, I'll take you to the lecture hall to find Mu Hui!" ”

Pang Xuelin smiled: "Professor Merton, then trouble you!" ”

Pang Xuelin followed Merton to the door of a lecture hall, just when it was time for the end of class, the students came out of the classroom, and saw Merton leading Pang Xuelin to stand at the door, many students first said hello to Merton, and then their eyes swept over Pang Xuelin, and they always felt that this black-haired and yellow-skinned person was a little familiar.

Some people seemed to recognize Pang Xuelin, but they were not familiar with Pang Xuelin, and their eyes only stayed on him for a while, and then whispered to their companions.

Occasionally, you can hear words like Chinese Pang and Fermat's theorem.

After a while, a tall girl with long hair and a shawl and a plain jacket and jeans hurried out of the classroom.

She lowered her head, as if she was thinking about something, and didn't notice Pang Xuelin and Merton standing at the door of the lecture hall.

"Xiaohui!"

Pang Xuelin said loudly.

Wang Muhui was shocked, thinking that she was having auditory hallucinations, and subconsciously raised her head, and saw Pang Xuelin and Professor Merton standing together, looking at her with a smile.

"Brother Huge!"

Wang Muhui rubbed her eyes, a look of disbelief flashed in her eyes, and in the next second, she instantly threw herself into Pang Xuelin's arms like a milk swallow throwing into the forest.

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