Chapter 263 The First Lesson in China

At night, the breeze brings coolness.

Across the west coast, in a white room, a president with a cool hairstyle was staring sharply at the CIA director in front of him.

"Waste! After investigating for such a long time, activating so many resources, and spending so much money, you found nothing!"

"So far, apart from knowing that the other party has launched a project related to nuclear energy, I don't know any other details. Waste, really waste!"

The director of the CIA defended himself innocently: "You can't blame us."

"In the past few years, many of the secret agents we planted in that country were cleared out. After being redeployed later, it is obvious that they still have no access to those core secrets."

"But what we are certain now is that Professor Xu played a very key role in this nuclear energy project, or he guided this nuclear energy project."

"In addition, through investigation, we also found that Professor Xu is conducting research on lithium batteries. He has acquired a materials research institute and applied for an artificial SEI film in countries protected by international patents around the world. patent."

“This patent is used to solve the problem of lithium dendrites in lithium batteries.”

"Of course, there are many patents of this type in various countries. We don't know yet whether this patent can solve the problem of lithium dendrites."

After hearing this, the president sitting opposite asked: "What is the probability that it can be solved?"

As a businessman who started out as a politician, he has a certain understanding of lithium batteries. Although he does not know much and is not as good as professionals, his long-term investment in various businesses has made him aware of the biggest problem with lithium batteries. It’s the problem of lithium dendrites.

If this problem can be solved, the prospects for lithium batteries will be quite broad.

The director of the CIA shrugged and said: "It is difficult to know whether the other party has solved the lithium dendrite problem by relying on a patent application document alone. This kind of problem is difficult to determine before the other party announces it or gets the sample. "

"According to the survey, this probability is not high, not even one percent. The laboratory acquired by Professor Xu only had a capital of more than 10 million, which is about 2 million when converted into rice gold."

"A laboratory of this level will basically only have about ten researchers and rely on some patents to survive. It can be said that it is almost impossible to solve the problem of lithium dendrites."

“You must know that every year, there are more than three-digit or even four-digit companies or research institutes around the world, and laboratories are studying the problem of lithium dendrites, including our Albert Electric, which produces hundreds of millions of meters of gold every year. investment, but there hasn’t been much progress so far.”

The blond-haired president pondered for a moment and relaxed a little: "So it's basically impossible?"

The director of the CIA nodded: "Judging from the survey data, this is indeed the case."

Nodding, the president with a cool hairstyle continued: "Hurry up and investigate. I want to know what the nuclear energy experiment of the country opposite is researching!"

"In addition, let the media carry out propaganda, saying that the other party has violated international conventions and is researching the proliferation of nuclear weapons, and at the same time, the diplomatic side will follow up."

Xu Chuan, who had already fallen asleep, naturally did not know about the arrangements on the Atlantic coast and the confrontation between the two great powers.

It was a quiet night. After getting up, he made a cup of coffee. There was a textbook "Linear Algebra and Spatial Analytical Geometry" on his desk.

This is something that will be explained in class this afternoon. Although he is very familiar with algebraic geometry, as a teacher, there is nothing wrong with preparing for the lesson before class.

This doesn't take him much time. For this kind of basic books, a simple flip through is enough.

Moreover, reviewing the past and learning new things, for mathematics, the more basic the knowledge, the more important it is.

The morning passed quickly. After ordering a takeaway and having a simple lunch, Xu Chuan brought the teaching materials to NTU.

The location of the class was changed from the West Building to Public Classroom No. 1 in Shaw Building. This is the largest public classroom on the Xianlin campus of NTU, with a capacity of more than 500 people.

Most of the time, there is almost no one here.

But today, the entire public classroom No. 1 is not just empty seats, not only the seats are full, but even the stairs and corridors of the public classroom are full of people.

The entire classroom was packed, and there were quite a few students standing in the corridor outside the classroom.

Although not all students who come here have majored in algebraic geometry, and many of them are not even majoring in mathematics, many students who have not signed up for this course are sitting here with their backpacks.

This is legendary.

Since the beginning of the IMO and IPHO competitions, that person has been breaking world records and creating new history.

When he now stands here as a professor, everyone is curious about what kind of mathematics class he will bring to them.

Of course, before the formal class started, everyone was discussing whether Xu Chuan would really come.

"Do you think Chuan Shen will really come to teach us?"

"It should be true. After all, Nanda has confirmed it on its official website."

"But this is a Nobel Prize and Fields Medal winner, and he still comes to teach undergraduates? Maybe it's just in name, and the students who teach are his students?"

"Isn't it possible? Isn't this just a joke to everyone? God of Sichuan probably wouldn't do such a thing."

"Who knows."

"No! It must be Sichuan God who teaches. I am confident."

"Make a bet, I bet fifty cents that the God of Sichuan will come!"

"I'll make a tea egg!"

"I want a Furukawa Iori commemorative edition!"

When Xu Chuan came to Public Classroom No. 1 of Run Run Shaw Building, even though he had experienced many big scenes, he was still frightened by the sight in front of him.

In the huge public classroom, there is a sea of ​​people, densely packed with students, even lecturers and professors, crowded together, just like the morning rush hour of the subway in a small island country.

If the air circulation is not turned on, Xu Chuan even doubts whether the air in this classroom is enough for so many people.

Seeing him appear in the classroom, the crowd immediately became commotion.

"Come, come, Sichuan God is really here!"

"It took an hour of high-speed rail and two hours of public transportation! It was worth it to see the God of Sichuan with my own eyes!"

"Kawashen is awesome! He actually came to teach us a lesson."

“Being able to listen to a lecture by a Nobel Prize winner and a Philippine Prize winner will be worth it in my life!”

"Wow, wow, wow, I envy the students of NTU. They can listen to it more often in the future."

In the classroom, with the appearance of Xu Chuan, the crowd suddenly cheered.

Many students just held up their mobile phones and started taking pictures, and some even forgot to turn off the flash.

Xu Chuan smiled and said, "I know everyone is interested in me, but I didn't expect so many people to come today. I even saw the dean of our institute sitting in the crowd."

Shrugging, he continued: "Maybe it's because I haven't started a class for a long time. The school leader personally supervised me in the first class. After all, since I took up the post of professor in the second half of last year, it is indeed a bit strange to start the first class today. Competent.”

As he spoke, his eyes fell on a corner of the lecture theater, where NTU professors and leaders such as Zhou Hai, Chang Ming, and Dean Rong Zhizhuan from the School of Science and Technology gathered together.

Noticing Xu Chuan's gaze, several people smiled and nodded in greeting.

Xu Chuan teased the atmosphere and then continued: "Today's course is based on the textbooks of linear algebra and spatial analytic geometry."

"Because the students here today range from undergraduates to postgraduates, the content explained is mainly basic. Some students may wonder why I offer such a basic course."

"For this question, if you listen carefully in the next class, I think you should gain something."

"Okay, let's start class. I think everyone has previewed it yesterday, so now open the textbook "Linear Algebra and Spatial Analytical Geometry" and let's start with linear equations."

"A system of linear equations is a system of equations in which each equation is linear with respect to the unknown quantity (such as a system of 1-degree equations in 2 elements). Our country has studied linear equations at least 1,500 years earlier than the rest of the world. In the early AD "9 In the chapter "Arithmetic", there is a study on linear equations. "

"Linear equations have a wide range of applications. The well-known linear programming problem is a linear equations problem that has certain constraints on the solution. It is widely used in geometry, algebra, etc."

In my previous life, I was not a professor at Princeton for more than ten years.

Xu Chuan has his own method for teaching.

For the mixed open class group of undergraduates, graduate students, and even doctoral students, we will start from the shallower to the deeper, but it will not be completely in-depth. The final depth will be kept at the point where an undergraduate has a vague understanding, and the graduates and doctoral students have self-enlightenment. , is his grasp of the teaching knowledge.

The one-hour open class passed quickly, Xu Chuan explained, looked at the students in the classroom who were still writing furiously, and put down the chalk in his hands.

"That's it for today's lesson."

For today’s class, NTU specially installed two-sided projectors in this public classroom so that students in the back row can more clearly see the blackboard and lecture content in front.

Hearing the sound, the students sitting in the classroom, especially the undergraduates, finally breathed a sigh of relief.

Although university professors are almost the same, they can flip through books faster than they can fall in love with each other, but this is the first time that they have turned through nearly a third of a textbook in one class.

Starting from linear equations, to the determinant and inverse matrix of square matrices, to matrices and their elementary transformations, geometric space, n-dimensional vectors and linear equations

After one class, these undergraduates felt that their minds were already filled with knowledge.

But what makes them feel even more amazing is that even though the man on the podium teaches so much, they don't feel dizzy and accept incompetence.

Although many people began to lose track of the rhythm in the middle and later stages, sometimes Xu Chuan's words would suddenly make them realize it, as if this place corresponded to the previous one.

It's like reading a novel. When the author lays out a foreshadowing, the readers don't know it at first, but when connected dozens of chapters later, everyone will suddenly understand that it has been mentioned before.

"No wonder Chuan Shen said before the lecture why we need to teach these basic things." In the lecture theater, a doctoral student put away the hand that recorded the last stroke and couldn't help but sigh:

"I have finished studying "Linear Algebra and Spatial Analytical Geometry" a long time ago. I always thought that I had learned it well. Unexpectedly, after listening to this class today, I discovered that there are many things in it that I have not learned."

"Including some technical applications, which I have never learned before and never thought of."

The friend around him nodded and agreed: "Compared with Chuan Shen, the professor who taught us algebraic geometry before is so far behind. There is really no comparison."

The doctoral student smiled and said: "How can this be compared? One is a Fields Prize + Nobel Prize winner, and the other is just an ordinary university professor."

The friend around him shook his head and said: "No, I'm not talking about this, but the attitude, skills, and some other things in teaching. You know what I mean."

The doctoral student nodded in agreement and said nothing more.

He also came from an undergraduate student, and in the current environment, many professors in many universities are perfunctory when teaching students, and many even directly let their assistants or students come.

For this phenomenon, most students who have read to the doctoral stage have experienced it.

But the feeling given to them by Xu Chuan is completely different.

Of course, this may be related to the fact that today's class is the first one, but in any case, he was greatly inspired here today.

Those skills, experience, methods, application and association of knowledge points, etc., are not learned from books or even from other professors.

For those graduate students who have already reached the doctoral stage, they know very well that these are the most important things.