Zhang Xinyuan picked up the book "Friends of Mathematics" and asked curiously, he had never seen this book in a bookstore, and just looking at the cover, he felt very emotional, giving people a small and fresh feeling, making it difficult for a literary girl like her to resist.

By the time Xu Sichen reacted and wanted to stop Zhang Xinyuan from reading, he couldn't fall in love anymore, because Zhang Xinyuan had already taken the book and began to look at it.

"Oh no!" Xu Sichen's heart tightened, not only because Tao Li told them not to let the students in other classes see it, but also because there were almost no secrets between her and Zhang Xinyuan, and any reference book used was the same, no matter who found a new reference book, they would share it with each other as soon as possible, but he had not told Zhang Xinyuan for so long.

What's more, this "Friends of Mathematics" is still compiled by Tao Li Tao, and this kind of behavior is even more unforgivable for Zhang Xinyuan, a fanatical fan of Tao Li!

It's no different from betrayal!

Sure enough, when Zhang Xinyuan looked inside, he found that this was actually a mathematics reference book, and he was immediately a little unhappy, "Si Chen, why didn't you tell me earlier if you have this reference book! I said why didn't you buy a mathematics reference book that day! It turns out that you have a better choice!"

Zhang Xinyuan's voice sounded extremely aggrieved, she had always regarded Xu Sichen as her best friend and shared everything with her, but Xu Sichen encountered such a good math reference book, and he actually bought it secretly and read it alone, and he didn't tell her, Zhang Xinyuan naturally felt sad in his heart.

Zhang Xinyuan is not the stupid girl who didn't like to learn before, whether the teaching aid book is good or not, although it can't be known at a glance, but after all, she has used the teaching aid book for so many years, when she just turned to the first chapter, the knowledge architecture diagram that caught her eye immediately attracted her attention!

When I came to use Wang Houxiong as a reference book, there were a few things I didn't understand very well, but after reading that picture, Zhang Xinyuan seemed to be suddenly opened, and he understood it all of a sudden!

Xu Sichen didn't tell her such good information, was he afraid that his grades would surpass her?

"Yuanyuan, listen to me first......" Xu Sichen was about to explain, but found that Zhang Xinyuan's eyes widened and he was staring at the cover of the reference book.

Zhang Xinyuan didn't notice who the editor-in-chief of the book was at first, but she casually flipped to the first page of the text and looked at it, but just now, she suddenly found that behind the name of the editor-in-chief on the cover, it was Tao Li's name!!

At first, Zhang Xinyuan still didn't believe that this Tao Li was the Tao teacher she thought she was, but when she looked back, she also saw the familiar names of Chen Tianxiang and Yang Zhongming on the first page, and the back of the preface said,

"Tao Li, XX year, XX month, XX day, written in Jinling Middle School"

At this time, Zhang Xinyuan was 100% sure that this Tao Li was the math teacher of their class, Mr. Tao!

This is no longer a grievance that can be described, Zhang Xinyuan felt betrayed and even angry at this moment!

said that the things about Teacher Tao should be communicated with each other, how did Teacher Tao compile the book, she didn't tell me!!

And on the first day of school, I asked her if she had anything fun about Teacher Tao, and she actually said no!

So, what is this book?!

"Si Chen, you lied to me!" Zhang Xinyuan's aggrieved tears were about to fall, and his voice was crying.

"No, Yuan Yuan, are you okay to listen to my explanation!" Xu Sichen also panicked, she didn't want to lose her best friend because of this kind of thing!

"What is there to explain! This book is the best proof of this! When did Mr. Tao publish the book, why didn't you tell me, and you still secretly bought it and read it alone! I will never believe you again. Zhang Xinyuan still felt very aggrieved.

"It's not that I don't want to tell you! It's that Mr. Tao told us not to talk about this matter easily! Actually, this book was not bought at all, Mr. Tao paid for it to be printed for us to try, and you can't buy it in a bookstore at all. Xu Sichen had no choice but to recruit all of this.

"Don't let you tell anyone else?, and pay for it to be printed for you to use, do you mean everyone in your class has it?" Zhang Xinyuan hurriedly asked.

"Well, it was sent to us on the first day of school. Xu Sichen nodded and said.

"Why is Teacher Tao so partial! A few days ago, he said that he would not treat our class and your class differently, and would treat everyone equally, but I didn't expect to secretly print materials for you, but I didn't let our class know!" Zhang Xinyuan pouted and said.

"This is not a matter of whether Mr. Tao is partial or not, and Mr. Tao Li also has his own difficulties. Xu Sichen sighed, and then explained the truth of the matter to Zhang Xinyuan in detail.

"Mr. Tao was worried that if he rashly sold this book in a bookstore, wouldn't he be sorry for us if there were any shortcomings? So he chose four classes to try it, and if the response was good, it would be printed and sold in batches. And don't ask why you don't choose your class, then Teacher Tao must have his own plans, Teacher Tao is afraid that you will misunderstand, so let us pay attention to confidentiality. ”

Xu Sichen finally said.

"So that's the case! I said, how can Teacher Tao Li be biased!" After listening to Xu Sichen's explanation, Zhang Xinyuan looked thoughtful.

"Now you should know why I didn't tell you! I don't want to hide it from you! So don't be angry!" Seeing that Zhang Xinyuan was no longer angry, Xu Sichen secretly breathed a sigh of relief, and then said with a smile.

"Hmph, if Teacher Tao doesn't let you say it, you won't say it, you can tell me secretly! Between me and Teacher Tao, who do you choose?" Zhang Xinyuan said to Xu Sichen angrily.

"Do you need to say this? It must be Teacher Tao! Teacher Tao is so handsome! Why should I choose you!" Xu Sichen replied without thinking about it. After finishing speaking, even she couldn't hold back herself, and laughed directly.

"Hmph! I have no conscience! If I were you, I would definitely choose Teacher Tao, hahahaha!" Zhang Xinyuan also said with a happy smile.

The two girls who were a little crazy, after looking at each other, couldn't help but laugh again, and they couldn't do it tacitly.

"Okay, now that you know everything, let's hurry up and read the book! Let's relax for a while tonight, just study for an hour, and then spend the rest of the time going to read Mr. Tao's MOOC, this week's MOOC must have been updated!" Xu Sichen said excitedly.

"But I really want this book, I don't need to read it to know that it must be very useful. Zhang Xinyuan was a little reluctant to pick up the book "Friends of Mathematics" and said.

"Or, you can borrow the book and let me make a copy of it secretly!"