Do you understand Euclid today?

Saying goodbye to Yan Kaiyue and walking out of the teaching office, Lin Qianshu saw Jiang Yizhi taking a step closer to him, and saw him open his mouth as if to speak.So Lin Qianshu took a step aside in time, and before Jiang Yizhi could say anything, he let out an imposing "hum" and turned his head to the other side.

Jiang Yizhi had a helpless look on his face, and said in a low voice, "Wu Mu, don't make trouble."

Although the voice was nice, Lin Qianshu didn't like what he said.He snorted again, and said eccentrically: "My mind is still participating in the competition, and I don't like talking to people."

After Lin Qianshu finished speaking, he waited for a long time before the person next to him answered.So he was a little anxious again, and secretly turned his head to observe Jiang Yizhi, and found that Jiang Yizhi's gaze was on the propaganda window opposite the teaching office, and he didn't pay attention to his emotions.

After doing it for a long time, I became sulking again.Lin Qianshu felt that the impact of this fist was not as good as cotton. If he was alone with such a person, he was afraid that he would not be able to help but want to beat him violently.Anyway, he couldn't stay any longer, Lin Qianshu looked down at the timetable in his hand before leaving, and found that the latest math class in class D was scheduled for 10 minutes later.

Instead of going back to the office with Jiang Yizhi, it would be better to go to class D of senior one to attend a mathematics class. Anyway, in the eyes of the students, he is the teacher who came to attend the class and should be respected.The more Lin Qianshu thought about it, the more he felt that the idea of ​​attending classes was not a bad idea. Putting away the schedule, he didn't even bother to pretend to smile at Jiang Yizhi, and said directly: "I'm going to attend classes, you can go back to the office by yourself."

Hearing the sound, Jiang Yizhi's gaze fell back on Lin Qianshu. He took out a high school math textbook from his backpack and handed it to Lin Qianshu, and asked him, "Do you have a pen with you?"

Lin Qianshu crossed his arms, instead of picking up the book Jiang Yizhi handed over, he looked at him vigilantly: "What are you doing?"

"Take notes." Jiang Yizhi said, "This is the textbook you put in my bag the day before yesterday."

It turned out to be his own book.Lin Qianshu reached out for the book suspiciously, and as expected, he saw his name on the title page.So holding the book, he was speechless again—how lazy was he before, why did he even put the book in Jiang Yizhi's bag?

If there is one, there are two. After taking the book, Lin Qianshu didn't feel too embarrassed to pick up the fountain pen Jiang Yizhi handed over. He held the book in one hand and the pen in the other, parted ways with Jiang Yizhi downstairs in the first year of high school, and set foot on the classroom where he was attending classes. Long journey.

Senior One Class D is located at the corner of the fourth floor of the Senior One teaching building, separated from Class C by a boiling water room. It is inconvenient for the teacher to enter the class on weekdays, and usually he will not come in early until the preparation bell rings.Because of this, when Lin Qianshu entered the classroom, the whole class was still noisy, and there was no sense of nervousness about the upcoming class.

When Lin Qianshu walked into the classroom, some sharp-eyed students saw him, winked at the person he was chatting with, and sent a telegram, so the students who had been chatting in small groups quickly scattered back to their seats, and the whole class fell silent .

Why do I feel that such a scene is indescribably familiar.Lin Qianshu walked towards the back of the classroom while thinking with a serious face. After thinking for a long time, he realized that these students regarded themselves as strict.

When he was about to reach the back row of the classroom, Lin Qianshu noticed two black heads who were out of place among a group of people sitting upright and looking up.

Those were two boys with their heads down. The one in the front row was almost huddled under the seat, his shoulders were shaking nervously, and the things in his hands were hidden in the desk. Lin Qianshu knew it at a glance That is the iconic action of playing with mobile phones in class.The right elbow in the back row was slightly bent, his head rested comfortably on his elbow, his back was slightly undulating, and he seemed completely undisturbed by the noise from outside.The more Lin Qianshu looked at it, the more he felt that these two heads were also indescribably familiar, but before he could get closer to take a closer look, the one sitting in the front row slapped his thigh and shouted "nice", and moved from his seat excitedly. jumped up.

After jumping up, Lin Qianshu finally saw the boy's face clearly - it was Radar who fought side by side in the Internet cafe last night!

Since this is radar, then... Lin Qianshu's gaze was on the back of the head of another boy who was still sleeping soundly.

Radar was a bit surprised when he saw Lin Qianshu suddenly appearing in front of his eyes. He called out "Brother Lin" in astonishment, and then a happy smile appeared on his face. Brother, Brother Jiang! Who do you see coming?"

Waking up from a beautiful dream, Jiang Yixing clenched his fists, slowly straightened up and looked up at Radar, with a seemingly murderous look in his eyes: "Radar, you'd better give me a reason to wake me up .”

Radar was obviously used to such strong winds and waves, so he pushed Jiang Yixing's arm excitedly, then pointed at Lin Qianshu who had stopped and walked to the table of the two of them: "Brother Lin is here!"

Jiang Yixing yawned, raised his hand to support his head and looked sideways at Lin Qianshu: "Why are you in class D? There is no math competition in our class."

As soon as the boy finished speaking, a girl wearing glasses stood up from her seat and walked over with a thick exercise book in the front row.The girl walked up to Lin Qianshu, reached out to help her glasses that had slipped off the bridge of her nose, and said respectfully to Lin Qianshu, "Mr. Lin, I have finished the training homework last night, and I need to trouble you to collect it yourself." Homework, I'm really sorry."

Lin Qianshu could see with the naked eye that the expression on Jiang Yixing's face was distorted for a second.He suppressed his laughter, took the girl's homework with a gentle attitude, glanced at the name on her school card, and said to the girl in a gentle tone: "Student Tang Lin, I have accepted the homework, but I am not here specially today. Collect homework." He smiled at the girl, and looked at Jiang Yixing with an ugly face: "Recently, I will come to class D to take math class with everyone."

Radar whistled and patted the empty seat beside him excitedly: "Brother Lin! Sit next to me! There is no one here!" He lowered his voice and continued excitedly: "Before I sat with Brother Jiang Yes, Old Dong thought it was too noisy for us to sit together, so he let us sit in front of each other. When you come, I will be at the same table again."

From the sound of the radar, Lin Qianshu could hear that he was really excited.But... Lin Qianshu glanced at the mountain of textbooks and novels on the table next to Radar, and his eyes fell behind it involuntarily.

There is nothing on the desk in the back row. Although there is no one sitting there, it can be seen that there are traces of careful cleaning, and even the dust in the corners has been wiped clean. It looks like an ideal place to sit with a bag. bit.

Lin Qianshu glanced over, Jiang Yixing straightened up alertly: "What are you going to do?"

Lin Qianshu walked up to Jiang Yixing, grinned at him, pointed to the empty seat and said, "Is there no one here?"

"Someone." Jiang Yixing stretched out his foot and hooked the stool out from under the desk, trying to move it behind him.

"No one." Lin Qianshu looked stunned, stretched out his feet to stop the stool, and pulled the stool back to the desk with all his strength, "Great, then I'll sit next to you."

Jiang Yixing probably didn't expect to have such a cunning trick, and his eyes widened in disbelief: "Hey, I mean..." Halfway through his words, the radio bell rang, completely covering up what his other half wanted to say go.When he was about to speak again, the math teacher of Class D had already wandered in from the door of the classroom with books and a thermos.

"It's time for class." The math teacher walked up to the podium, not caring about the extra personal matters in the class, put down the cup, picked up the chalk, and wrote the questions on the blackboard, "Let's learn logarithmic operations today, let's take a look at this first." question."

While everyone's attention was on the blackboard, Lin Qianshu opened the stool and sat down. He turned his head and showed a friendly and polite smile to Jiang Yixing.

Jiang Yixing choked in his throat, unable to get up or down.As a qualified school bully, Brother Jiang didn't like to disturb the classroom order, so he could only give Lin Qianshu a glare, and turned his head to play games on his mobile phone.

No one disturbed, Lin Qianshu was finally able to calm down and listen to the class.He listened patiently for a while, and tried his best to copy some content on the blackboard into the book, but after 5 minutes, he couldn't sit still—Lin Qianshu had already learned about functional equations before time travel Yes, this logarithmic operation was learned a month ago, and he didn't want to make a fool of himself.

Taking a cursory glance at the questions on the blackboard, Lin Qianshu suddenly felt confident in becoming an excellent math teacher.See, I still remember the knowledge I learned a month ago, and what I lack is the process of learning new knowledge.

Thinking about it, Lin Qianshu couldn't help but start to get distracted. He first observed the other people in class D, and found that most of the people sitting in the front row were obediently taking notes, starting from the middle to the back row, yawning, stealing There is everything for snacks.Radar, who was sitting obliquely in front of him, even put the math book up on the table, hid the phone behind the math book, and played the game openly.

Lin Qianshu glanced at Jiang Yixing who was beside him, and found that the screen displayed on his mobile phone was consistent with the radar screen, presumably the two were playing the same game.

Out of boredom, Lin Qianshu rested his chin on the radar and played for a while.He found that it was a mobile game very similar to the online game the three of them played in the Internet cafe last night. It was also a parachute jump and hit people, but the game platform was transferred from the computer to the mobile phone.So watching and watching, Lin Qianshu, who had only tasted the sweetness of the game last night, also felt itchy. He took out his phone, quietly elbowed Jiang Yixing, and asked in a low voice, "What are you playing?" What game?"

He was hit by someone unexpectedly, and the enemy in the magnifying glass that Jiang Yixing had just set up just ran away.He turned his head angrily: "Did you do it on purpose?"

Lin Qianshu blinked innocently: "Huh?"

Jiang Yixing stabilized his mind and squeezed out the answer through his teeth: "The mobile game version of Survival Battlefield."

Lin Qianshu nodded, found the game from the app store and downloaded it, and happily clicked on the icon while talking to the people around him: "Hey, let me line up with you, I feel that I have already figured out this game the way."

Before he finished speaking, the intense music sounded from Lin Qianshu's cell phone, and the sound spread to every corner of the classroom.Jiang Yixing reacted faster than Lin Qianshu, threw himself on him and snatched his cell phone, and pressed the off button in an instant.

"It's dangerous..." Jiang Yixing looked at the phone with a black screen and heaved a sigh of relief. When he propped himself up and was about to sit back, he saw Lin Qianshu's strange expression from the corner of his eye, and he had a vague premonition in his heart.He turned his head slowly, and saw the math teacher standing on the podium with a livid face and looking this way.

"Jiang Yixing!" The math teacher angrily threw the end of the chalk into the box, "Give me a mobile phone in math class, you are really getting bolder now!"

Jiang Yixing really wanted to say that the mobile phone in his hand was not his own, but thinking that he was indeed playing with the mobile phone just now, he still honestly chose to remain silent.

Radar raised his hand abruptly, and stood up without waiting for the teacher to call: "Report to Teacher Zhu! This phone is mine! Brother Jiang was repairing my phone just now!"

The reason was so blind that the whole class immediately burst into laughter.

Amidst the laughter, Teacher Zhu's face became more and more ugly. He slapped the podium vigorously with a blackboard eraser and shouted: "Quiet!"

The laughter faded away, and Teacher Zhu's eyes locked on the brave man who stood up to take the blame: "Radar, right? Very good..."

Radar grinned, unaware of the imminent crisis.

"You come to the blackboard to do the questions!" Teacher Zhu reached out and patted the blackboard. There was a thinking question written on it. "Others give me this question in the blank space of the book, do it immediately!"

The author has something to say: Hahahaha, it’s on the blackboard!