Qiao Yu's indifferent attitude almost made Lanjie get stuck.

I was so resistant yesterday, but I could give it to you today? How could this child change his mentality so quickly?

Well, I can only say that this little guy is really serious about making money.

"Okay, as long as you are willing to quit smoking. The school Olympic training class is from 4:00 to 5:30 every Monday, Wednesday and Friday. You don't have to attend the third class in the afternoon this month. Just go to the 302 electronic classroom in this building before 4:00. The holiday training class will be notified separately at that time."

After calming down, Ranjie began to explain seriously.

Qiao Yu nodded, then asked actively, "Just just have three classes a week? What books should I read normally? I only have one book in my family now, "Introduction to Riemannian Geometry."

"What is Riemann? What do you think of that thing?" Lanjie was stunned and asked.

"Is it not helpful for the competition to learn by yourself?" Qiao Yu asked back.

Langjie swallowed, then shook his head decisively, and emphasized: "No, no help at all."

"Oh, that's pretty good." Qiao Yu also breathed a sigh of relief, which shows that the topic of the Olympic Games seems to be really simple.

"Can you understand that book?" Lanjie couldn't help asking.

To be honest, Ranger did come into contact with the content of Riemann Geometry when he was studying for a master's degree, but he only had a general understanding. After all, he did not need to have a very in-depth understanding of these things.

"I can't understand it completely." Qiao Yu shook his head honestly and said, "The previous discussion on manifolds and spaces is fine. It feels a bit difficult to deal with Riemann measurements, contacts and curvatures."

"You have also taught yourself calculus, linear algebra and topology?" Ranger was surprised. This was a situation he had not mastered.

If you want to understand the basic parts of Riemann geometric manifolds, you must systematically study these disciplines, otherwise it is impossible to understand concepts such as smooth manifolds, tangent spaces and vector fields.

Similarly, if you have not been exposed to linear algebra and topology, you will not be able to understand concepts such as vector space, linear mapping, basis, coordinate system, open set, closed set, continuous mapping, etc.

If you don’t understand these, you can’t understand the structure of the manifold in the book.

Qiao Yu nodded: "I have watched a lot of class videos scattered on the Internet. I have borrowed a few books in the library and flipped through them."

Ranger shook his head and said seriously: "The content of the Mathematics Olympiad geometry exam is mainly plane geometry, three-dimensional geometry, involving Euclidean geometry and triangular geometry. In fact, all Olympiad questions will not include the content of university mathematics. But in your current situation..."

Speaking of this, Langjie hesitated for a moment, but still bent down and opened the cabinet under the desk. After a moment, he took out three books and handed them over.

"If you have a lot of spare time and want to study advanced mathematics, you can read these two books systematically first. If you don't understand, please come and ask me."

Qiao Yu took the book from Lanjie and carefully read the title.

The first book is "Principles of Mathematical Analysis Volume 1", the author is Feihegingoltz, the second book is "Principles of Mathematical Analysis", but the author is Lu Ding, and the other book is "Introduction to Algebra and Number Theory", the author's surname is Feng Keqin.

Then Qiao Yu handed back Feihejin Golz's "Principles of Mathematical Analysis Volume 1": "Thank you, Teacher Lan, but you don't need this book. I have learned all his mathematical analysis by myself."

"Have you learned by yourself?" Lanjie was a little surprised, but he didn't say much, so he took the book back and said, "Then you probably read Lu Ding's book. There are some ways to complement each other in the two books."

"Okay, Mr. Lan."

Ranger curled his lips, suddenly thought of something, and said, "By the way, I don't know much about your advanced mathematics mastery. You can learn about the global mathematics competition organized by Little Ribaba.

If you can successfully enter the finals and achieve good results, there will be a bonus. The gold medal is 30,000 US dollars, and the excellent medal is 2,000 US dollars. There are also practice competitions on the official website, which is convenient for those who are familiar with the answering system. You can also download previous questions to roughly test your math level."

"The prize of 30,000 US dollars for the exam is not a bonus of more than 200,000 yuan? Do you have to pay taxes? Is it necessary to change it to RMB to handle the fee?" Qiao Yu asked three consecutive questions in an instant.

Ranjie was slightly stunned, and then he saw the light flashing in Qiao Yu's eyes.

Really, he just said this casually, after all, the topic has ended here. I just didn't expect this guy to be so sensitive to the bonus numbers. Especially the focus of people is whether they can participate in the competition. This guy is actually thinking about whether to pay taxes...

"Of course you have to pay tax on the bonus. But you don't have any other income. If you really get the bonus, you should be able to ask your mother to apply for a tax refund in March next year. As for the US dollar, it is because it is a global competition, and there is probably no handling fee if you change it to RMB."

Ranger explained.

I didn't care too much because he had never won the award, so I really don't know.

"More than 200,000." Qiao Yu sighed.

It would be great if he could win a gold medal. If he earned this money, his family's assets would instantly soar by 200%. At least he could participate in the competition with confidence.

Ranjie looked at Qiao Yu vigilantly and warned: "Do you know the meaning of the global mathematics competition? You are not competing with you. There are masters and doctors from universities such as Huaqing and Yanbei in China, as well as top students from foreign universities such as Cambridge and Harvard.

And although you can participate in the preliminary round by registering and online competitions, there are strict invigilance measures to enter the finals. So you must not think of some cheating methods, even if you win the prize, it will be useless."

It's not that Ranger is worried.

He could feel Qiao Yu's persistence in making money.

That's fine, the key is that this kid is still carrying evil spirits.

Ranjie had no doubt that if Qiao Yuzhen found a way to cheat, he would definitely make a vote without hesitation for the sake of the bonus.

"Don't worry, Teacher Lan, I know what I know. To be honest, I have never done any bad things in the exam since I was a child." Qiao Yu answered.

To be honest, Lanjie was still not very relieved. He believed that Qiao Yu had not cheated in the exam since he was a child, at least he did not have it in junior high school. After all, there was no room for regression in the open score. But after all, there was no bonus for those exams.

I wanted to say something, but when I thought that Qiao Yu was just a fifteen-year-old child, he was at the age of rebellion, so I still resisted not saying anything more.

It aroused the rebellious mentality, and it would be bad if nothing happened. So Lanjie simply turned the topic to the high school entrance examination: "I heard from your teacher Yuan, are you planning to take the high school entrance examination normally?"

Qiao Yu nodded and replied, "Yes."

"Are you confident?" Ranjie asked.

"At least I think it's okay to pass the general high line." Qiao Yu said conservatively.

Lanjie nodded without comment, and then said calmly: "Qiao Yu, you have talent. As long as you are willing to show it, I believe that no matter where you go in the future, you will be discovered. But I still hope you can stay in Iron No. 1 Middle School.

This is not only for your consideration, but I also have selfish intentions. But one thing is that only at Tieyi Middle School can I guarantee that all the promises I gave you before will be implemented. To be honest, based on your situation, I personally think that taking the high school entrance examination this year is still risky. Are you sure you must take the high school entrance examination this year?"

Qiao Yu raised his head and smiled confidently, saying, "Let's do it seriously next time I will add my previous scores in sports and birthplaces, and the score is not 620, I will all follow your arrangements."

Ranger hesitated for a moment and said, "Then... OK."

"Then I'll leave first?"

"Well, don't forget classroom at 4:302 tomorrow afternoon."

"Okay, goodbye to the teacher."

"Wait, add WeChat."

"Uh, I'm sorry, Teacher Lan, I didn't bring my cell phone today."

At this moment, Qiao Yu thought of Xia Keke. Look, it was all bad things for the little girl.

"Ah?" Ranjie glanced at Qiao Yu: "Okay, 13XXXXXXXXX, please write down my phone number and add me when you go home."
Chapter completed!