Jiang Han picked up the scratch paper in front of him and said, "I've solved it." ”

Professor Tang was stunned, then frowned.

"Did you solve it?"

Jiang Han nodded.

"How long did it take you?"

"Three minutes ?......" Jiang Han was puzzled, he only spent three minutes, it shouldn't be much, right?

Why is Professor Tang's face a little unsightly?

Professor Tang's face was indeed a little unsightly.

Three minutes?

Can you solve all three small questions of a big problem in three minutes?

Don't make drafts when you talk big?

Are young people so arrogant?

Even if I don't have this level, can it be that you, a freshman, can be more powerful than me, a professor who has been studying for decades?

Young ignorance and frivolity!

Professor Tang gave Jiang Han such an evaluation in his heart.

"Okay, you come up and write out all the steps for me to solve these three questions. ”

Professor Tang stepped down from the podium and gave way to Jiang Han. He wanted Jiang Han to know that knowing his arrogance would not bring him anything substantial, on the contrary, it would bring ridicule from others.

At this time, he had already thought about how to teach him how to be a man if Jiang Han couldn't solve this question.

Teach students to be human beings...... This is what a teacher should do.

At the suggestion of Professor Tang, Jiang Han walked up to the podium, and he picked up the chalk and began to write the steps on the blackboard.

This question is only about mechanics.

Momentum vs angular momentum is concerned.

There is still some difficulty, and it is naturally difficult for people who are not familiar with the knowledge points, but it is still relatively easy for him.

Because he had read the books before, although his physics level was not as good as his mathematics level, he was still able to solve the problems in the college physics books.

[2ML1 = m(a-L1), L1 = a/3, that is, the distance between C and the rest of the particle is a/3. Vc=[mv+m(-v)+m*0]/(m+m+m)=0...... From this, w' = 3/4w. 】

It took five or six minutes.

Jiang Han finished writing the question.

He rubbed his wrist, which was a little sore, and sighed in his heart that it was really not easy to write a board book, and then turned his head to look, only to see the students under the podium taking notes thoughtfully.

Professor Tang, who was standing on the side, was frowning, not knowing what he was thinking about.

He put the chalk on the podium and returned to his place.

After solving the problem by himself, Professor Tang should not order himself again, right?

Thinking of this, he opened the research theory of function in generalfunctions on the table and continued to look at it.

After a while, Professor Tang reacted.

Jiang Han's title turned out to be right!

The most important thing is that he hasn't talked about this type of topic, but Jiang Han really only took about five minutes to finish this somewhat difficult question!

What kind of speed is this?

He turned his head to look at Jiang Han, who was reading a book at this time...... Still reading?

Looking down on what I teach in class?

Alas, forget it, young and frivolous...... It's not a bad thing.

That's how young people should be!

Since you know physics, it seems that there is no problem in studying other subjects.

He kind of appreciates this freshman now.

"There is nothing wrong with this student's problem-solving steps, you can refer to it......" Professor Tang paused for a while, and then continued: "I hope you can learn from this student just now, by the way, this student, I don't know what your name is?"

"My name is Jiang Han. ”

......

After the physics class, there were no classes for the day.

Jiang Han returned to the library, ready to take out the unfinished paper and continue to write.

He took out his computer from his bag and suddenly noticed that an A4 piece of paper had fallen from his bag and fell to the ground.

picked it up and took a look, and he found that it was the question that Zhou Qinqin had asked him before.

As soon as he saw this question, he thought of being punished by the director for cleaning the library for a week because of Zhou Qinqin.

"Iniquity!"

Jiang Han sighed, and was about to crumple this piece of paper into a ball and throw it into the trash...... I found that there were no trash cans around.

You can't just throw it away, can you?

Then you have to clean it yourself in the end?

After thinking about it, Jiang Han still planned to put away this piece of paper first, and then throw it away after finding the trash can.

Turn on your computer and continue writing your paper.

Time flies, and without anyone disturbing him, Jiang Han devoted himself to the creation of his thesis, and I don't know how long later, he was reminded again by a part-time student in the library:

"Classmate, it's half past nine, and it's time for retreat. ”

When he came back to his senses, Jiang Han only felt that his stomach was growling and he forgot to eat dinner......

"I'm sorry, classmate, I'm in a trance, do you remember the time? ”

"It's okay, what are you doing?"

"Write essays. Jiang Han replied as he began to pack up his things, and then asked, "Is there still food in the cafeteria now?"

"Haven't you eaten yet?" the part-time classmate was a little surprised.

"Busy forgot. Jiang Han said with some embarrassment.

"Then you're really serious, but at this point, there should still be a few windows in the cafeteria that haven't been closed, so you should go over and have a look. ”

"Okay, thank you, classmate. ”

Jiang Han thanked him, then picked up his backpack and ran out of the library in a hurry.

The waiting at the door of the library at this time has been extinguished, and there are almost no people, Jiang Han just ran out of the library, and when he encountered a turn around the corner, the speed did not decrease, and there was a bang.

Ahem!

Jiang Han only felt a faint pain in his chest, he knew that he had bumped into someone, and he was still a girl.

"Classmate, are you alright?"

Jiang Han rubbed his aching chest, hurriedly ran to the girl who was knocked to the ground by himself, and helped her up, he felt the girl's body trembling.

I think I was hit by myself.

But why didn't she say a word...... Couldn't it be that I was stupid?

"It's okay, it's okay. ”

The girl spoke in a very small voice, as if she was comforting herself and Jiang Han. But what can be heard for sure is that the girl's voice is also trembling.

Jiang Han hurriedly hugged the girl in front of him, he only felt that this girl was very thin, because her arms were very thin.

"Your voice is trembling......"

"It's okay, it's really okay. Lin Youwei wanted to break free from Jiang Han's support.

Seeing this, Jiang Han had no choice but to slowly let go of his hand.

Who knew that as soon as his hand was released, Lin Youwei's feet were unstable and she was about to fall again.

He was quick and held her, and Lin Youwei also subconsciously grabbed Jiang Han's hand.

"It's okay, you can't stand still! Let's go, I'll take you to the infirmary to have a look!"

Jiang Han pulled Lin Youwei and was about to walk in the direction of the infirmary.

Who knew that at this time, Lin Youwei struggled more violently.

"No, no, I'm not going to the infirmary......"

Obviously, Lin Youwei was a little flustered at this time.

Jiang Han was puzzled: "Why?

Lin Youwei didn't speak, but stubbornly broke free of Jiang Han's arm, leaned down and picked up the books scattered on the ground.

Jiang Han also helped pick up the books, and with the help of the faint light in the distance, he found that these books were all new books in his freshman year. After he finished picking it up, he handed it to Lin Youwei.

"Thank you......" Lin Youwei thanked.

Jiang Han asked, "You are also a freshman?"

"Hmm......" Lin Youwei nodded.

At this time, Jiang Han discovered a very strange thing, that is, the girl in front of him liked to keep her head down. The clothes are not as fresh as those of normal students, but on the contrary, they are a little fat and shabby.

He had some vague guesses in his heart, the reason why this girl was reluctant to go to the infirmary was probably because she was afraid of spending money.

What happened next confirmed his guess even more.

I saw Lin Youwei looking for something in the dark after counting the books.

"What are you looking for? Didn't you find all the books?" he asked.

"No......" Lin Youwei's voice has been very small.

"What's that looking for?"

Lin Youwei didn't answer him, but continued to look for something in the dark, Jiang Han saw that she was looking for something hard, so she turned on the flashlight that came with her mobile phone to help Lin Youwei find it.

After looking for a while, Lin Youwei found the white steamed buns wrapped in a plastic bag in the grass next to her, but the steamed buns had fallen out of the plastic bag, and it was obvious that there was a lot of dust.

Lin Youwei hesitated for a moment, but finally picked up the white steamed bun.

"It's already dirty. Jiang Han kindly reminded.

Lin Youwei was silent for a while, "It's okay, you can still eat the bun skin by tearing off the surface." ”

"......" Jiang Han was silent, and then asked, "Didn't you have dinner?"

"Well......" seemed to realize that there was something wrong with her answer, and Lin Youwei added: "I studied in the library and forgot." ”

What a silly girl.

Jiang Han suddenly felt something strange, and seemed to be a little distressed.

How can there be such students in universities?

He snatched the steamed bun from Lin Youwei's hand and threw it directly into the trash.

"You ......" Lin Youwei didn't expect the voice in front of her to do such a thing, she suddenly raised her head and glanced at Jiang Han, her eyes were a little angry and a little aggrieved.

The moment he saw Lin Youwei look up, Jiang Han was stunned for a moment.

Lin Youwei's facial features appeared in front of her eyes.

A pair of phoenix eyes, two wisps of smoke eyebrows.

Liugong Fandel has no color, look back at Bai Meisheng.

It's ...... It's incredibly beautiful!

It turns out that there is such a face under the fat and shabby clothes!?

Jiang Han forcibly came back to his senses and said, "I accidentally threw away your steamed buns, I have to compensate you." ”

"No, you did it on purpose. Lin Youwei was very convinced.

She didn't know why the boy in front of her was so bad, so she just threw away her bun!

After saying that, she felt inappropriate again, and hurriedly lowered her head.

"I was careless. Jiang Han explained, and then pulled Lin Youwei, who continued to bow her head, and said, "Follow me." ”

"Go, where are you going?" Lin Youwei was a little flustered and wanted to resist.

Jiang Han only felt that Lin Youwei's strength was very strong, "Go to the cafeteria and compensate you." ”

Hearing this, Lin Youwei hesitated, but in the end she didn't resist and followed Jiang Han.

The boy in front of me did lose his buns, and he wanted to compensate me.

Jiang Han dared to buy two meals when the last cafeteria window was about to close.

Chicken thighs are also added to each serving.

One for yourself and one for Lin Youwei.

But when he handed the meal to Lin Youwei, Lin Youwei refused.

"Why?"

"You just need to compensate me for my steamed buns, I don't want these ......," Lin Youwei whispered.