One photo was taken for an hour.

Dragging his sleepy body back to the bedroom, Lu Zhou pushed open the door and found that Liu Rui was the only one left.

"What about people? It's not time to eat yet, is it? ”

Liu Rui, who was burying his head in physics problems, didn't raise his head, and rolled his eyes: "Those who were hit by you all went to self-study." ”

Lu Zhou: ???

Liu Rui: "By the way, the physics homework will be handed in in the afternoon, and you haven't started writing yet, have you?" ”

"I've already finished writing it, and I've handed it over."

While taking out the clothes in the travel bag, Lu Zhou said casually.

Not to mention this homework, he has finished this month's homework.

This is still before going to Beijing. Because he always asked for leave every three or five days, Lu Zhou was also a little embarrassed, so he finished all the physics problems in the exercise book and sent them to Professor Li at one time.

As a result, Professor Li Rongen was also very interesting, glanced at his homework, and didn't say whether he did it right or not, and directly said that he didn't have to hand in his physics homework in the future, and it was a waste of time to write these things, so it was better to do something meaningful.

"Done?" Liu Rui was shocked, "You didn't even go to class, when did you write it?" ”

"Before I went to Beijing, I wrote it by hand when I made a PPT."

Liu Rui didn't believe it, so he took out the thinking question copied from the class with his backhand and asked, "Then you teach me?" ”

"Wait, I'll take a look."

Putting the changed clothes into the laundry tub on the balcony, Lu Zhou returned to the bedroom and stood behind Liu Rui to look at the topic twice.

[Find the specific heat of the mixed gas of water vapor with mass M1 = 3.0X10²kg and hydrogen gas with a mass of M2 = 3.0X10²kg at room temperature.] 】

The questions are short and deceptively simple.

However......

Lu Zhou said: "This question is out of outline, it's normal that you can't figure it out." ”

It was probably the reflection question that Professor Li Rongen assigned in class, which he didn't see when he wrote the workbook.

Liu Rui: ?

Looking at the bewildered expression on Liu Rui's face, Lu Zhou smiled and continued.

"Diatomic gas molecules and water vapor molecules can be regarded as rigid molecules at room temperature, and despite the fact that their covalent bonds still vibrate, the vibrational energy levels of most molecules do not transition and do not contribute to the constant volume heat capacity, so the conclusion is the same as considering vibration. It may not be mentioned in the textbooks of large physics majors, but it is mentioned in inorganic chemistry. ”

Liu Rui: ??

Of course, it is not enough to know this, but also to know the equimolar heat capacity of rigid diatomic molecules and water molecules, as well as the data that are not given in a series of question stems.

There is no chemistry class for mathematics majors, and this question is expected to be difficult for many people. If you can do it, you either have self-taught inorganic chemistry outside of class like Lu Zhou, or you have participated in high school physics competition training.

Professor Li Rongen came up with this thinking question, probably to cultivate students' extracurricular independent learning ability. After all, in a place like a university, there are only so many class hours for a book, and every teacher is driving a rocket, and there are not many things that can be taught in class, and many things need to be learned by themselves outside of class.

Of course, this still depends on the individual's requirements for himself.

If you just want to get a graduation certificate, you don't even need to attend classes, draw a key point before the exam, and brush your grade points before graduation, you can also pass the customs smoothly.

"So, you can get ......"

Lu Zhou picked up the pen and wrote on scratch paper:

【Cv1=3R，Cv2=5/2R】

[Heat capacity of the mixed gas: Ctotal=(M1/u1)Cv1+(M2/u2)Cv2]

[Specific heat of the mixture: c=Ctotal/(M1+M2)]

[From u1=0.018,u2=0.00,R=8.314J/(mol· K)】

[Bringing in the above data, 5.86X10³J/(kg· K）】

The calculation is very simple, junior high school students will do it, and the difficulty is only in the blind spot of the knowledge points.

Returning the pen to Liu Rui, Lu Zhou said with a smile: "This question is still quite simple, if it is replaced to calculate the absolute value of its internal energy, it must include the vibrational energy of the molecule." However, this kind of question will definitely not be tested in the final exam, so let's give those top students in the physics school a headache. ”

Liu Rui: ???

Looking at Liu Rui's bewildered expression, Lu Zhou was stunned and asked, "Don't you understand?" Otherwise, I'll talk about ......."

"Understand is understood...... Liu Rui nodded with a confused expression, "Where did you hear these things?" ”

Are we really at the same university?

Liu Rui couldn't help but start to doubt his life.

Lu Zhou said as a matter of course: "Of course, it is from the library. ”

Liu Rui didn't speak, and silently began to pack his things.

Lu Zhou was stunned: "What are you packing up for......"

Liu Rui looked up at the ceiling, his eyes were full of sadness, "I deeply feel that my knowledge level is not enough, starting today...... I'm going to go to the library every day. ”

After saying that, he took his backpack and walked out the door without saying a word.

……

On Monday afternoon, the lecture hall was crowded with people.

As the captain, Lu Zhou stood on the stage, ready to deliver an acceptance speech.

Looking at the black pressure of the audience, he actually knew very well in his heart that most of these people were group performances urged by the student union, the Youth League Committee, and the Qingma class.

Everyone is an adult, who is willing to praise people if it's okay?

As for those freshmen who were unaware of the dazzling college life and all kinds of, were fooled by a sentence, and were still holding a small notebook in their hands and ready to take notes, Lu Zhou didn't know if his speech could help them.

It's just that if you work hard for your own goals, I'm afraid that your college life will be full of frustration......

There are also several media on both sides of the classroom, mainly school newspapers and local newspapers, and the highest level is probably Jinling City TV Station, all of which are recruited by the school.

Seeing Director Lu's encouraging eyes towards him, Lu Zhou sighed in his heart, "It's not easy to make money", and then he cleared his throat and held the microphone to speak.

"Teachers, leaders, students, good morning!"

"I am honored to have this opportunity to participate in this unprecedented competition with two of my teammates, and to win the "Higher Education Society Cup". First of all, on behalf of the participating team members across the country, please allow me to express my most sincere gratitude to the organizers, sponsors, instructors and all the people of insight who have worked hard for the smooth running of the competition......"

He spoke on the stage for more than ten minutes, from inside the arena to outside the arena, from the experience of mathematical modeling competitions to the learning methods of various disciplines, and then from the offer of 500,000 annual salary to talk about his future life plan.

In a word, ninety-nine percent chicken soup, one percent method.

After all, it was not the first time to be interviewed, and Lu Zhou did not have stage fright, so he naturally forced this to the end.

Bang Bang Bang!

The audience applauded thunderously.

I really don't know, but looking at the freshmen who copied a page full of small notebook notes, the applause is really exciting.

“…… Thank you! Bowing slightly, Lu Zhou handed the microphone to Mr. Liu and walked off the stage.

In the aisle next to the seat in the lecture hall, looking at Lu Zhou walking this way, Professor Tang smiled and nodded: "That's a good point." ”

Lu Zhou smiled, "Professor Tang, when will the school's bonus be paid?" ”

"One week at the latest, what are you anxious about, and the school can still lose your few dollars?" Professor Tang smiled and said, "How is it, what have you been working on lately?" ”

"Number theory," Lu Zhou thought for a moment and said, "the part about Mersenne primes." ”

"Mason prime, you're still working on that." Professor Tang sighed, his tone slightly regretful.

Number theory is an amazing thing, and the threshold is unusually low. How low is it? Many theorems and formulas can be understood even by junior high school students, and this is the reason why number theory has become a "hard-hit area of civil science".

Legend has it that every year the letters written by civil scientists to the Chinese Academy of Sciences about the problems of Mr. Goldbach can circle the earth when they are photographed. The janitor of the Institute of Mathematics of the Chinese Academy of Sciences has nine math problems in his hands, and the civil science department will not enter the door if he can't do the questions.

It can be seen that it is much more difficult to make achievements in the field of number theory than it seems on the surface. Not only do you have a solid foundation in mathematics, but most importantly, you have to have an extraordinary talent in mathematics.

The reality is so cruel, there is no field or research direction that tests talent more than number theory.

If you don't have that talent, it's best not to toss in number theory, because even if you toss for a lifetime, you may not be able to make more achievements than others "in a flash of inspiration".

But even if he knew this, Professor Tang did not say anything to dissuade him.

Because he really understands Lu Zhou's personality too well.

Impatient, utilitarian, in a hurry.

When he touches the wall of number theory, he will naturally retreat.