"Okay, that's all for today's lesson, and next, I'll give you a question. It took me three days to solve this problem, and now I will test you too, and if any of you can solve this problem in a week, I will spare a month to tutor him alone for an hour every day as a reward after the class!" Professor John said with a smile.

Wow!

Hundreds of students at the scene screamed.

Being able to study with an authoritative chemistry expert like Professor John for a month is definitely the dream of all chemistry enthusiasts here!

Satisfied with the students' response, Professor John picked up his pen and began to write on the blackboard.

When Professor John finished writing the question, hundreds of students at the scene copied it down one after another, and they all buried their heads in calculating it.

When Ye Yun saw this question, he was stunned on the spot.

This question...... Isn't it the same question I created five years ago?

Back then, when Ye Yun was in the special forces, because he was going to perform an undercover mission, he went to study chemistry half a year in advance.

The requirements of special forces, whether it is a variety of killing skills or knowledge, must be comprehensive.

Not to mention a top-level special forces like Ye Yun.

At that time, when they were in the army, they were often pulled to learn all kinds of chemical and biological knowledge, because this is an indispensable subject for special forces.

Under high pressure, they learn very quickly.

In the special forces for a few years, they almost nibbled away all the knowledge of chemistry and biology subjects required by ordinary college students for doctoral students, during which Ye Yun also went abroad to study at the Institute of Chemistry in Cambridge for half a year.

It was there that he created this problem of micromolecular chemistry.

Back then, Ye Yun's chemical talent was indeed amazed by everyone, in addition to calculating and experimenting with various difficult chemical problems, he also created his own problems and then solved them by himself.

He still remembers a problem he had created that even a Cambridge chemistry professor would have spent half a day to solve!

And now Professor John's question is only the medium difficulty of all the questions he created, and Ye Yun himself has no less than three solutions.

The entire classroom was full of students calculating.

What shocked Ye Yun was that even Xia Shanshan, a girl, actually borrowed a pen and paper to calculate.

Ye Yun approached Xia Shanshan slightly to see how she calculated.

"This chick, I didn't expect the talent to be quite good, so quickly to solve a third, it seems that it will take less than a week, give her three days, and she can solve it. Ye Yun sighed, "It is worthy of being Xia Chengcheng's twin sister, all of them have such good brains." ”

Xia Shanshan calculated, and suddenly became irritable, because she was trapped in an equation and didn't know how to calculate it.

"What's next?" Xia Shanshan grabbed her hair and kept muttering.

It can be seen that this Xia Shanshan should have liked chemistry quite a lot when she was a student.

"Do you like this teacher very much?" Ye Yun asked.

"Who likes this kind of old man, I just like chemistry more, I like to think more. Xia Shanshan said without raising her head.

For the next half hour, Professor John did not give any more lectures.

This is his style of teaching, with an hour and a half of lectures and another hour for students to do their own calculations, which he guides on the side.

Xia Shanshan has been stuck in that step, and her hair is about to be grabbed by her dozens of roots, of course, with her, there are also many people around, all of whom are desperately calculating, trying to solve this problem, getting the favor of Professor John, and embarking on an extraordinary road of scientific research!

When Ye Yun saw Xia Shanshan's appearance, he was amused and helpless, and finally he couldn't stand it anymore, so he immediately borrowed a pen and a piece of paper from someone around him, and then wrote a formula on the paper and slowly pushed it in front of Xia Shanshan.

Xia Shanshan, who was burying her head in calculations, suddenly noticed the piece of paper at this time, and she didn't care how this piece of paper came from, who pushed it, because her attention was completely attracted by a chemical formula above.

Her eyes widened, then she slapped her thigh and screamed, "I'm so stupid, why didn't I think of using this formula!"

Xia Shanshan picked up the brush and began to calculate, with the formula provided by Ye Yun, many of her next levels were easily solved!

Half an hour passed quickly.

At this time, Professor John, who was standing on the podium, had already begun to pack his things and was ready to call out for the end of class.

Just as Professor John was about to speak, a voice of great joy rang out throughout the large classroom.

"Ah!! solved!

Xia Shanshan jumped up excitedly, waving the notebook in her hand and shouting, with incredible joy on her face.

Xia Shanshan's words made the faces of more than 100 students in the classroom move and look at her with an incredible expression.

The difficulty of this question was something they had never encountered before, and even the teacher said that it would take him a week to solve it.

But now it's only been an hour, Xia Shanshan has figured it out, she's not kidding, is she? Or is she a genius?

Professor John's brows furrowed slightly, he would not believe Xia Shanshan's words.

Because, in his class, there have been a few similar things that happened before, all of them were done by some beautiful female students who wanted to get his attention.

Unexpectedly, this kind of thing happened again today.

But...... This schoolgirl is too pretty, isn't she?

And listening to her words, it seems to be a Chinese.

Why haven't I seen this student before?

Professor John asked Xia Shanshan: "This classmate, have you really solved it? It's only been half an hour, how can you solve it?

"Teacher, I really figured it out!" Xia Shanshan shouted unwillingly, why can't these people believe in themselves.