Looking at the group of people sitting in rows in the dormitory, eating fruits, Wu Bin smiled and began to speak.

"I used to have a high school student in a certain key area, but when he was a sophomore in high school, he felt that the college entrance examination course alone was a bit boring, so he went to participate in a physics competition."

"Yes, it's a big guy." Xu Bo nodded.

Wu Bin also nodded, and then said: "After participating in the physics competition for the first time, he was brushed off in the semi-finals, but he slapped his head and felt that this competition was quite interesting, so he decided to continue." ”

"But at that time, several of his teachers did not recommend him to participate in the physics competition, because for the same problem, if the average person in the competition class can solve it in one hour, he has to spend two to three hours, and the competition is a kind of competition of time and rhythm."

Although everyone listening to it wanted to complain about the competition, isn't it a competition to fight IQ, but now it's the big guy telling the story, and whatever he says, it's what it is.

Then this high school student said he was not convinced, why can't I? I'm just going to participate! ”

Seeing that he was so determined, those teachers stopped pouring cold water on him, and threw the "Collection of Difficult Problems" to him, saying that he would make a manuscript.

Speaking of this, Wu Bin took a few thick books from the side of the bed and stacked them together, pointed to them and said, "Almost a year later, this high school student found the teacher with six documents thicker than this, and said that he was confident that he could get the first national level." ”

Looking at the book in Wu Bin's hand at this moment, which added up to more than 1,500 pages, everyone else in the bedroom raised their heads and made up for the six documents that were thicker than this.

After showing the thickness to the surroundings, Wu Bin continued: "In those six files, all his ideas for doing problems, experimental process diagrams and experimental reports, etc., are saved, and each page is marked in the upper left corner, for example, the collection of problems is the first book he brushed, and he marked it as A, and then he marked a certain problem in the "Collection of Problems" as page A-396, and the reference system is the same relative motion problem, so that. ”

"In the end, when he swiped to the sixth folder, the mark in the upper left corner had changed to AY, that is, A-Z was not enough for him, and he continued to subscript from AA."

"it...... Is there so many books for him to brush? Xu Bo was surprised.

"Want to brush up on the questions and are you afraid of running out of books? You can ask Mr. Cai tomorrow, and it is estimated that he can give you more than 1,000 books. ”

"More than 1,000 ...... of God's special books"

"Later? Did he win the prize? Xu Hao on the side said curiously.

"Well, he did win the national one later, but he didn't make it to the national team." Saying that, Wu Bin picked up "Problem Collection" again, "At that time, the teacher told us that he had brushed this "Problem Collection" five times, and each time there was a new harvest. ”

"I can't mess with it, I can't afford to mess with it."

After everyone finished speaking, they went back to their beds and continued to read their books.

Looking at Gu Fan, who quickly slipped away, Wu Bin picked up a jelly and smashed it over: "I don't require you to brush the "Collection of Problems" five times, you can brush the chemistry book five times, you will have no problem." ”

Gu Fan, who was hit, took the jelly off and peeled it off and ate it, saying, "I know, isn't this just looking at it." ”

……

As soon as the midterm exam ended, Wu Bin naturally entered the state of going all out to prepare for the competition.

On Wednesday evening, Wu Bin returned to the small classroom after completing several experimental reports with Bi Wanqing in the laboratory.

"The experiment of measuring the refractive index will be left until the day after tomorrow."

"Okay." Wu Bin, who was sitting in his seat, nodded.

"Well, then let's continue to talk about those more part-of-the-road questions yesterday today." After speaking, Wan Qing picked up the chalk and wrote on the blackboard.

[Approximate solution of Lagrangian (stellar mass) >> planetary mass >> satellite mass]

"When calculating the first, second and third points, you can approximate the center of mass as a star, and when calculating the fourth or fifth point, you must approximate the center of mass to the star and the planet.

Bi Wanqing turned around and asked Wu Bin.

"You can't substitute too soon." Wu Bin replied immediately.

"That's right."

……

Wu Bin's progress is undoubtedly fast, so now Bi Wanqing spends most of his time discussing with Wu Bin to do questions, and occasionally teaching, he also teaches some more partial knowledge, which is a winning prize if he gets the test.

During this period of time, in Bi Wanqing, Wu Bin did know the special situations that would occur in various exams.

For example, even if you know the method, it is almost impossible to get it right at the first time during the exam, such as the famous sixth-order determinant of hand arithmetic.

In addition, there is some new knowledge that Wu Bin saw when he flipped through various books, but what Bi Wanqing told him was that it would be better to master some knowledge when he really needed it.

For example, the real need for Hilbert spaces was when I was studying quantum mechanics.

It was also when I was learning quantum mechanics that I memorized various Gaussian integrals.

In addition, when Bi Wanqing once told him that China's quantum mechanics was at the forefront of the world, he suddenly became very interested in this discipline.

The other is group theory.

After hearing this, Bi Wanqing told him that this was only used when he needed to do some strange Olympiad problems, and that group theory questions rarely appeared in competitions.

But of course, this is not to say that group theory is a fancy useless technique, but that Wu Bin has not yet reached the time to use it.

In the truly cutting-edge scientific research, whether in mathematics, physics or chemistry, group theory has a large number of applications.

Because there are many different physical structures in the study, crystal structures as well as hydrogen atomic structures can be modeled using group theory methods.

On the podium, after explaining the approximate Lagrange explanation, Bi Wanqing patted the chalk ash on his hand, looked at Wu Bin and said, "There should be less than a month left in the exam, right?" ”

"Well, there's more than twenty days left." Wu Bin nodded.

"It works!" Bi Wanqing slapped the podium, "I think even if you go now, there is hope for the national team, and if you are given another 20 days, the national team will definitely not be a dream!" When the time comes, I must go to the scene to see how Jingbei robbed you, hahahaha. ”

"Huh? Teacher, are you going to the scene? Wu Bin asked in surprise.

"Of course I want to go! How can I not go to my students participating in the national competition? Even if you lose your job, you can go. Bi Wanqing said with a smile.

"If the teacher also goes, then I will definitely be more confident!"

"Hehe, it's not me who should give you confidence, it's the knowledge in your head." Bin Wanqing took a sip of tea after speaking, and continued: "That's it, for the remaining twenty days, you still focus on self-study, during which you take a few days of evening self-study, and I will consolidate mechanics for you, although it is the most basic foundation of physics, it is also the most important thing." ”

"Good!" Wu Bin nodded vigorously.