How many weeks are you going to confess?

Jiang Lesheng was terrified, his old love finally defeated his new love for once.He asked Bian Jin to play games after school today, and the other party agreed.

Lu Xu snatched the last piece of chicken in his bowl, "I don't have any backbone. If he finds a new love, you can find one too."

Jiang Lesheng was only thinking about the piece of chicken, and he didn't hear what Lu Xu was saying at all, so he snatched the braised pork from Lu Xu's bowl without showing any weakness.

Lu Xu didn't care, "You ordered the meat for me."

Jiang Lesheng came to his senses, "Fuck! Then I'm at a loss!"

He glanced at Lu Xu's dinner plate again, frowned and said, "Why do you only eat vegetables every day?"

Lu Xu: "Why don't I cook every day?"

Jiang Lesheng was taken aback for a moment, thinking that what Lu Xu said seemed to be right, and finally realized after going around for a long time, "Go! You are so confused! I mean, why do you only eat vegetables every day?"

"Didn't your elementary school teacher tell you to eat more vegetables?"

"Then haven't you heard what is called 'Extreme things must be reversed'?"

Lu Xu was surprised: "Not bad, now I have learned to ask questions."

Jiang Lesheng snorted twice, "Forget it if you don't want to say it, I'll treat you as someone who buys high imitations every day and has no money to eat."

***

When the bell rang after school on Friday afternoon, Lian Li was not in a hurry and packed up his things bit by bit.

Jiang Lesheng and Lu Xu came to find Bian Jin, and the three of them discussed what game they would play later.

When he was leaving, Bian Jin said to him, "Be careful on the road."

Jiang Lesheng smiled brighter than the sun outside, "Goodbye Xinhuan, see you on Monday."

Lian Li: "...See you on Monday."

Lian Li's footsteps were heavy, he didn't want to go, he wanted to try his best to delay the time, hoping that there would be traffic jams on the road, or the Education Bureau would leave work early.

But he still arrived at the Education Bureau 5 minutes earlier.

It's already in the middle of the registration period, and almost no one has registered, and the staff are all sitting there bored playing with their phones.

The staff member who reviewed him last week was not there, and an older man was replaced, talking and laughing with the young girl next to him.

Seeing Lian Li, the little girl hurriedly asked, "Hi, are you here to sign up?"

Lian Li wanted to leave subconsciously, but Zhou Sijie's voice flashed in his mind, "Yunyun has already registered the day before yesterday."

"Yes." Lian Li took out the registration form and certificate again, and said proactively, "I saw in the announcement that your registration deadline is September 9th. I was a minor during the registration period but I became an adult during the competition. Can I register?" ?”

The man narrowed his eyes and glanced at Lian Li disdainfully, his tone was full of impatience, "It's impossible even if you think about it yourself, the game must be based on the game time."

"But you didn't write it clearly in the announcement..."

The man said "tsk" speechlessly, "This kind of thing still needs to be written in the announcement? Isn't this a matter of common sense? Why don't you come to participate in the Mathematical Olympiad if you don't understand this?"

The little girl next to him couldn't stand it anymore, and whispered: "Teacher Liu, please stop saying a few words, he just wants to sign up."

The man snorted coldly, and greeted the people next to him, "It's 2 minutes before I get off work, I invite everyone to dinner, what do you want to eat?"

"hot pot!"

"Barbecue!"

A group of people chatted happily, only the little girl came out and said to Lian Li: "I'm sorry, my classmates, we really can't do anything about it, you'd better go back, we're going to close the door too."

"Sorry to bother you." Lian Li turned and went out after speaking.

The air conditioner in the room was fully turned on, the air seemed to be stagnant, and it was very stuffy. He thought it would be better when he came out, but it was even worse.

Lian Li had never drowned before, but now he really experienced the suffocation of drowning.

His limbs were swollen and numb, his eyes were sore and painful, it was as if there was a huge exhaust fan in his body, drawing oxygen out, and he became heavier and heavier.

"Lian Li!"

When he felt that his toes were about to touch the bottom of the sea, there was a voice in his ear, which was very familiar, and he could hear this voice calling himself every day.

"Lian Li, good morning."

"Lian Li, are you going to eat?"

"Lian Li, be careful on the road."

"Bian Jin." The outlines in the line of sight gradually become clear, and the one rushing to the front is also the most conspicuous, tallest and with the brightest hair.

Lian Li suddenly thought inopportunely that he would never be lost in the crowd, he would always be the first one to be seen.

***

Chu Zihao and Chu Junhao were kept by the teacher because they didn't hand in their homework, and Bian Jin and the others could only play games in the classroom and wait for them.

Jiang Lesheng was amazed that he actually endorsed it there.

Bian Jin: "Did the sun set from the east today?"

No matter how stupid Jiang Lesheng was, he knew that he was hurting himself, so he slumped on the table, "I don't want to memorize...but it's the 17th, and the monthly exam is about to come. I didn't memorize comprehensive essays at all, and I didn't do well in the exam. My mother will beat me."

As soon as the words fell, Bian Jin stood up abruptly, startling Jiang Lesheng, "What's wrong? An earthquake?"

"I'm going to find Lian Li." Bian Jin strode out without packing his schoolbag.

Jiang Lesheng blinked, "...huh?"

Lu Xu gloated and patted him on the shoulder: "It seems that your old love is still not worth your new love."

Bian Jin stopped a taxi casually, and Jiang Lesheng also followed, running out of breath, he couldn't help but get into the taxi too.

"Go to the Education Bureau." Bian Jin said.

Jiang Lesheng swallowed hard, "Education Bureau? Aren't you going to find Lian Li?"

"He's right there." Bian Jin looked at the time, it was already 55:[-], and he hoped it would be in time.

***

Lian Li collected his emotions, "Why are you here?"

Bian Jin asked without answering, "Didn't you name it?"

Lian Li was surprised, but then relieved, "Well, the ages don't match."

Bian Jin comforted and said, "It's okay, come back next Friday, and I will definitely be able to report."

Lian Li smiled casually, "They said that this matter is stipulated and cannot be changed."

"Fart! They didn't write clearly in the announcement. It took so long for me to sign up, and you were underage when you signed up!"

Of course Lian Li knew all this, but what could he do?

Jiang Lesheng, who was standing next to the two of them, looked confused, "Wait, wait! What kind of charades are you two playing?"

Bian Jin tried his best to explain the situation to him patiently, "Lian Li is going to participate in a Mathematical Olympiad competition. The registration deadline for the competition is at the end of this month. It is only for minors. Lian Li will come of age in October, and the person in charge will not allow him to register."

Jiang Lesheng was even more confused, "No, brother Jin, how do you know so clearly?"

"Did you take my Mathematics Olympiad training class for nothing?"

"So you signed up too?"

"No."

Jiang Lesheng: "..." What exactly is he expecting.

Bian Jin went around behind Lian Li and patted him on the back tentatively. Seeing that the other party didn't resist, he patted him twice more.

"I will accompany you next Friday, and I will definitely let you report."

Lian Li knew that he was just comforting himself, and smiled at him, "Thank you."

The two accompanied him home and parted ways with him at the bus stop.

Before leaving, Bian Jin said to him: "The monthly exam is coming, can I ask you a question on Monday? Study committee member."

Jiang Lesheng yelled: "I want it too! Take me one!"

Bian Jin slapped him on the back, "You want a stick, he's not your study committee member."

"Learning is endless! Learning has no boundaries, and of course the study committee has no boundaries! Yours, mine, and others belong to everyone!"

"It's not easy for your Chinese teacher not to be mad at you..."

Lian Li was amused by the two, "I have no problem, I can also review while tutoring you, the things that benefit myself and others."

Jiang Lesheng arched his nose to Bianjin, "Look at Renxueba, how generous he is!"

Bian Jin ignored him lazily, and said to Lian Li, "See you on Monday."

This is the second 'see you on Monday' today.

"meet on Monday."

When Lian Li got home, he found that the door was not closed tightly, leaving a gap.

"Mom?" He opened the door suspiciously, the door was quiet, and as he spoke, there was a sudden "嗙唱——" sound, which was the sound of a glass breaking.

Lian Li hurriedly heard the sound and walked over, seeing Zhou Sijie inside, Lian Li heaved a sigh of relief.

Zhou Sijie looked very flustered, and kept tucking into her jacket pocket, as if she was hiding something.

"Mom, what's wrong with you?"

Zhou Sijie straightened her hair, "It's okay, I just lost my mind and accidentally broke a cup. How is it? Have you registered?"

She asked casually, but Lian Li felt that he had entered the cold winter instantly.

"No."

Zhou Sijie's face changed instantly, her chest heaved back and forth a few times, the corners of her mouth were tightly pursed, and the veins on her neck burst out.

But her voice was very low, "I don't want to hear any reason, I just want to hear the news from the Chenggong newspaper before the registration deadline."

Lian Li was actually thinking that he still had thirteen days to breathe.

***

The second 'see you on Monday' flag is still broken.

Teacher Wang went back to his hometown this weekend to take care of his sick mother. Lian Li didn't need to make up lessons, but he still left the house at [-]:[-] am to study in the library, and returned home at [-]:[-] pm, just to stagger the time with Zhou Sijie.

At noon on Sunday, when he went out for lunch, he "coincidentally" met Bian Jin and Jiang Lesheng.

Both of them were carrying schoolbags, Jiang Lesheng's eyes widened when he saw Lian Li, and exclaimed: "Grass! Brother Jin, you are amazing! Lian Li is really here!"

Bian Jin smiled at Lian Li, "You said before that you like the library here very much, there are few people and it is quiet."

Lian Li did say this, but he didn't understand why he could guess that he would be here today just based on this sentence.

Jiang Lesheng leaned over and said, "Lian Xueba, are you going to have lunch? We didn't eat, so let's go together? Can you teach me math in the afternoon? Just teach me and pass!"

Lian Li will not refuse the water that is poured out when he speaks out.

Naturally, they couldn't teach them homework in the library study room. The three of them could only gather in the corner of the library hall, pull a few paper mats and sit on the floor, using the chair as a table.

"So for the p-score discussion, the first is when p is less than minus one, the second is greater than or equal to minus one and less than zero, and the third is greater than or equal to zero. Just bring the value of mn into it."

Lian Li was talking to Jiang Lesheng about the last question of his homework.

Jiang Lesheng was suddenly enlightened when he heard that, "Crap! This feels like I finally got out of constipation after more than ten days."

Bian Jin slapped him, "Is it disgusting?"

Lian Li smiled and asked Bian Jin: "Do you have any questions to ask?"

Bian Jin squeezed Jiang Lesheng away, "Yes! I have to ask about these two pages."

Jiang Lesheng held back his mouth, "Brother Jin, you are too greedy, I only asked one question, you ask two pages."

"I call it studious and inquiring."

"Line 8." Jiang Lesheng huddled into a ball aggrievedly, counting three categories there.

Lian Li took a glance at the exercise booklet, "Calculus? Have we assigned homework this week?"

"No, but I think it's very interesting and I want to do it, but I can't do it."

Jiang Lesheng hurriedly said: "I know, I know! This is called don't do porcelain work without diamonds!"

Bian Jin squeezed out for him directly, "Get lost, you are the only one who can shake your wit."

Lian Li took a look at the first question, which was a question about derivation of implicit functions. He just learned it last week, but the teacher said that the college entrance examination is not an exam, so he just talked about it roughly.

The title is the square of x + the square of y = the square of r, find the square of dy divided by the square of dx.

Lian Li calculated it silently in his mind, and then quickly came up with the answer and said.

"This question is a question of derivation of higher-order derivatives. The difficulty lies in taking the derivative of x and the second-order derivative at the same time. First, the derivative of the square of x is 2x, and r is a constant, so the derivative is 0." Lian Li asked, " Are there any problems getting here?"

Bian Jin shook his head, "What about y's guidance?"

Jiang Lesheng also poked his head curiously to listen together.

"Because we treat x as an unknown number and take derivatives of x, the square of y is dy divided by dx of 2y." Lian Li stopped again, "Do you understand this?"

Jiang Lesheng was already reading the heavenly book, and silently shrank his head back.

Bian Jin nodded firmly, "Understood!"

Jiang Lesheng turned his head in shock, "You understand all this?! Are you still the Brother Jin I know!"

"You treat me like a rocket class for a month in vain?" Bian Jin glared at him.

Lian Li continued: "Let's sort out the formula, dy divided by dx is equal to x divided by negative y. At this time, let's look at the question, which is a second-order derivative, and we need to take another derivative of the first-order derivative. The formula Is such that."

Lian Li wrote down the formula for the second-order derivative of fractions at the top of the homework book, "You can try to formulate it yourself."

Bian Jin recited while listing the formulas, and finally wrote down the correct answer.

Lian Li was even happier than Bian Jin who wrote the answer himself, "That's right! You should understand the following, right? The unknown conditions have been transformed into known conditions, and the answer can be obtained by substituting them in."

Jiang Lesheng opened his mouth wide enough to stuff an egg in surprise, and watched Bian Jin write the last step stroke by stroke without blinking his eyes.

[=-y cubic divided by r square]

He raised his head and asked Lian Li, "Is that right?"

Lian Li reassured: "It's absolutely correct."

Jiang Lesheng: "The rocket team is really awesome..."