"Hehe, Mr. He, I read the blue one, and I have finished reading the upper and lower versions."

What Zhao Xueqing said was still an understatement, and He Dong was stunned when he heard it.

"Xueqing, this is a textbook for college mathematics majors, and you have studied it thoroughly?"

Seeing Zhao Xueqing shaking his head, He Dong breathed a sigh of relief, otherwise this would be a demon.

The demon is not terrible, the terrible thing is that a demon like Zhao Xueqing almost didn't find out, it is simply a sin.

"Teacher He, I have some questions, but I have already memorized them in the notebook, and I have a chance to ask you."

Zhao Xueqing's heart warmed, He Dong touched his face and said.

"You don't need to ask me, it's a big guy who came today, you can just ask him."

Zhao Xueqing became interested for a while, turned her head sideways and asked, "Who is here?" ”

"Professor Zhang Ban from the School of Mathematics of Shanghai Kyoto University!"

Zhao Xueqing shook her head and said that she hadn't heard of it, and He Dong was immediately interested.

"Professor Zhang Ban has taught many domestic mathematical geniuses, and he is well-known at home and abroad, and has won numerous awards."

Hearing this, Lin Qian became interested in this old man, teaching and educating people, should be the most worthy of respect.

Lin Gan, who was not interested in the lecture, began to look forward to it.

After a while, an old man walked in, his steps were windy, but he couldn't see the atmosphere of old age at all.

However, looking at the already bald hair, as well as the age spots on the face, you can also tell that the age of this old gentleman is probably in his sixties.

He Dong is only in his fifties now, and when he sees this Professor Zhang, he should indeed call him a senior.

Professor Zhang was followed by a young man with a computer in his hand, presumably his teaching assistant. Behind the platform of Fu Dan University's lecture hall is a very large screen, not just a screen, but also a blackboard on which you can write.

Professor Zhang came to the top of the table, looked down, and said.

"Hello everyone, I'm a professor from the School of Mathematics of Shanghai Kyoto University, Zhang Ban."

With one mouth, the six words of the professor of Shanghai Beijing University emphasized, and the arrogance that can be heard from the heart.

However, Professor Zhang Ban really has the qualifications to be arrogant, unlike a grandmaster like Ye Hong, Zhang Ban is a professor at the top university in the Celestial Empire.

Of course, if Ye Hong wants to come to Fu Dan University as a professor, it is not impossible.

After introducing himself, there was already fierce applause in the audience, and the old man didn't seem to like these things very much, so he quickly pressed them down with his hand.

"When you are old and you can't hear the noise, you should not applaud in the future."

Next, the old man's lecture began.

Maybe it's because I'm already full of peach and plum all over the world, and I've been praised a lot, and when I give lectures, a sense of arrogance is always revealed.

For such an academic thing, Lin Qian was not interested.

However, Zhao Xueqing and He Dong listened very seriously, but this little old man's mantra was a little unpleasant.

"This step was proposed by one of my master's students."

"This step was proved by one of my doctoral students."

……

Show your pride, and even have a feeling of looking down on people.

His own lecture was over, and the next step was the question session, a young young teacher, standing up, his face full of excitement, probably the first time he had such close contact with his seniors.

But after he finished his question, Professor Zhang's face changed.

"Shouldn't this question be memorized backwards as a young teacher? If I'm not mistaken, this is high school math. ”

Lin Qian twitched the corners of his mouth, this unlucky kid asked about the application of definite integrals, how could it be high school knowledge? Fat cat bar

There are all math teachers here, and there are students who are more proficient in math, who can not feel bad when they hear such words?

Lin Qian shook his head, maybe Zhang Ban's knowledge is worthy of a professor, but his morality is not worthy.

But just as Lin Qian sighed, a person stood up beside him, and when he looked up, it was Zhao Xueqing.

Does she have to ask questions too?

"Hello Professor Zhang, I accidentally came across a formula on the Internet, I wanted to prove it, but it failed, I want to ask you."

Lin Qian was stunned for a moment, but he didn't expect that Zhao Xueqing, such a shy little girl, would have the courage to stand up and ask questions.

Zhang Ban nodded and said, "Write it on the blackboard." ”

Zhao Xueqing went out from Lin Gan's side, squeezed her eyes at Lin Gan, and walked towards the podium in front of her with brisk steps.

Lin Qian also seemed to understand, maybe Zhao Xueqing's thirst for knowledge had overcome his shy character.

Coming to the blackboard, Zhao Xueqing wrote down the formula.

However, when Zhao Xueqing went up, it also caused many students to whisper.

"Which school is this, why is it so beautiful?"

"yes, I don't know if they arranged to go up and ask questions."

"It doesn't matter if she arranges it or not, she will ask for WeChat later."

……

Zhao Xueqing had already written down the formula, so she handed the electronic pen to Zhang Ban and bowed to Zhang Ban.

Zhang Ban just smiled faintly, let Zhao Xueqing go down, and began to check the calculation on the screen behind him.

Seeing this formula, many teachers also began to prove it, and the scene suddenly became silent.

However, five minutes have passed, and Zhang Ban still has not solved this problem.

Ten minutes.

Fifteen minutes.

……

Zhang Ban wiped the sweat from his palms, wouldn't it be too embarrassing for a high school student to ask a question if he couldn't answer it.

Looking at the audience, the teachers were also frowning, and they seemed to have encountered problems.

"Who did you prove it?"

Zhang Ban asked.

Those teachers also stopped their pens and shook their heads, saying that they couldn't prove it.

Zhang Ban coughed lightly and said.

"I can't answer the question raised by this student, and the teachers here can't answer it, so there is only one possibility, that is, this question is wrong."

There was an uproar below, and they began to discuss, of course, more about the students.

"This old man won't be himself, so let's just say it's wrong."

"No, after all, it's also a senior."

"It's because I'm a senior, I can't lose face, let alone say that I can't."

……

The following discussion, the old man naturally couldn't hear it, looked at Zhao Xueqing, and Zhang Ban said.

"Little girl, this question may have been copied by mistake, or it is possible that the person who made the question made a mistake, in short, it can't be proven."