In the communication room of the police station.
The police officer and Song Yu looked at each other in bewilderment.
The police officer held a pen and smiled faintly. "Why is it you again?"
Song Yu replied slowly, "Probably because I'm born with a strong sense of responsibility and like to call the police when I encounter injustice."
The police officer was amused. "No, I'm asking why you're always the one being beaten up."
Song Yu was speechless.
Xie Sui laughed out loud.
The gangsters were actually more seriously injured than them, but Hong Mao's group had already been recorded by the police and had countless criminal records. The police considered it legitimate self-defense, so they only recorded it briefly and let them go. They were supposed to contact their parents, but Song Yu took the initiative to talk about Xie Sui's family situation. His words were emotional and reasonable, so this part of the process was canceled.
They left the police station again and went to the small clinic again.
There were only a few people in the clinic, and the lights were bright.
The male doctor in the clinic still had an impression of them.
The doctor said, "Last time, it was a leg injury. This time, it's a hand injury. Young man, you're quite wild. "
Xie Sui sat on the chair, her eyes slightly curved, and said modestly with a smile, "It's okay."
The doctor was so angry that he almost tore the pen on the paper. "I said that you're wild, and you're so proud of yourself? Have you thought about how worried your family is? You're so young, yet you're studying obediently. Why do you have to hang out with a group of gangsters who don't do proper work? If something happens, your parents will be the ones who will be sad. "
Song Yu sucked on his mint candy and spoke up for Xie Sui. "Uncle, you misunderstood. You can't just look at the surface."
The doctor rolled his eyes at him. "I haven't scolded you yet. You're his friend, right? So you just watched him fight? Didn't you try to persuade him? "
Song Yu choked and scratched his head awkwardly. "We're not talking about the same thing."
The doctor put the medicine into a bag and sneered. "Fine. If you don't look at the surface, are you going to fight aliens and leave scars? Do aliens also use such down-to-earth cold weapons? "
Song Yu: "…"
The TV on the wall was playing Di Jia Ao Teman. When the doctor's two-year-old son heard this, he clapped his hands and turned his head. His big clear eyes curved as he laughed in a childish voice, "Crooked Star Silver."
Xie Sui paid and took the medicine. "Thank you."
The doctor was exasperated. "My son will grow up in the future. If he gets himself injured all over like you, I'll break his legs first. "
Song Yu chewed on the candy and shouted, "I already said that you can't judge a book by its cover. Uncle, what's wrong with you? My friend was injured while ridding the evil and pacifying the good. He just fought one against a hundred street bullies. They protected the personal safety and property safety of all the junior high and high school students in the north, south, and north of Lianyun Street. These are the scars of a hero. "
The doctor was speechless.
The child sitting on the chair clapped his hands while drooling. "Hero."
Song Yu was amused. "Hey, little kid, you're so smart. Say that again."
The child who was praised smiled very sweetly and said in a childish voice, "Brother, hero."
Seeing that he was teaching his child bad things, the doctor angrily chased them away with a feather duster. "Go, go, go. You fought against the street bullies. I think you're the biggest bully on Lianyun Street."
"Hahaha."
Song Yu, who had been promoted as a street bully, couldn't stop laughing. He pulled Xie Sui out.
A few moths gathered on a street lamp outside the clinic. In the quiet summer night, the whispers of insects could be heard from the bushes.
It was already very late. Song Yu stood under the street lamp and called Uncle Ma, asking him to pick him up at the usual place.
After hanging up the phone, Song Yu turned to Xie Sui and said, "I won't come here much in the future. I'll see you at school during the summer break."
Those hooligans had criminal records. This time, they would probably stay in the police station for a few days. Xie Sui should be safe in July and August.
It solved the most dangerous thing he would encounter during the summer break.
Song Yu felt that there was no need to come here anymore.
Xie Sui's nose was still filled with the smell of mint.
She couldn't help but think about how much Song Yu liked peppermint.
He retracted his fingers and smiled. "Okay, see you at school."
Song Yu stared at him and thought of the fierce young man in the deep alley. He was speechless for a moment.
For a moment, he felt that he didn't understand Xie Sui anymore. But it seemed that he never really understood her.
He got into the car. The car left the remote residential area and headed towards the bustling city center.
The neon lights shone on Song Yu's thoughtful face.
Uncle Ma asked, "Young Master, are you still here to look for your old friend?"
Song Yu came back to his senses. "Yes."
Uncle Ma said, "You come here every day. Old Madam is suspicious. I think if you come a few more times, she will meet your classmate. "
Song Yu laughed. "I'm not coming, I'm not coming."
Actually, it wasn't a big deal for Grandmother Meng to meet Xie Sui.
It was just that he promised 008 that he couldn't appear by Xie Sui's side as the third young master of the Song family. In the future, he planned to fabricate an identity as a "distant and poor relative of the Meng family". If he met Grandmother Meng, it would be easy for him to be exposed.
Song Yu added very few people on QQ. He lay in bed and played with his phone. Looking at the black profile picture of the period, he inexplicably felt a little itchy to send something.
But today, he racked his brains to come up with bad reviews and ran around the street in the middle of the night. It took a lot of mental and physical energy. He was already very tired.
He didn't know when he fell asleep.
When he woke up the next day, it was already nine in the morning.
When he went downstairs for breakfast, Song Yu received Ma Xiaoding's bombardment.
[Sadako doesn't forget the well-digger: Hahahahaha]
[Sadako doesn't forget the well-digger: Brother Yu, are you the one who is crazily giving bad reviews? I deliberately went to his place to eat today. When I saw Zhu Zhixing's mother's face turned green, I guess she was about to die of anger.]
[Sadako doesn't forget the well-digger: Hahahaha, you're so talented. I also asked my underlings to follow in your footsteps and give you a few good reviews. This vicious woman is going to die of anger!]
Song Yu was too lazy to care about Zhu Zhixing. When he thought of Grandmother Meng's expectant eyes and the stack of papers on the table, he suddenly had a headache.
He drank the milk and sent a message to Ma Xiaoding.
[Your husband Brother Yu: How are your grades?]
[Sadako doesn't forget the well-digger:???]
[Sadako doesn't forget the well-digger: Why are you asking this? It's okay … right?]
If you can get into Jing City First High School, your grades are not bad.
Song Yu curled his lower lip and began to type.
[Your husband Brother Yu: Good grades in junior high school don't necessarily mean good grades in senior high school. Don't think that you can relax during the summer vacation after the middle school exams. Other people are crazily signing up for cram schools now. The competition in First High School is very strong. Every year, there are cases of students jumping off buildings. It's lucky that the government didn't close down the schools. You can't lose at the starting line in the first year of senior high school.]
Ma Xiaoding was stunned by his speech, which was the same as his father's.
[Sadako doesn't forget the well-digger: … Brother Yu, what are you trying to say?]
Song Yu had already returned to his room. He pulled out a chair and sat in front of the table, looking at the mountain of papers.
[Your husband Brother Yu: Come to me, I'll share some knowledge with you. Good brother, let's do the papers together.]
[Sadako doesn't forget the well-digger: …]
Let's not be good brothers, okay?
After giving half of the papers to Ma Xiaoding, Song Yu felt much better.
Grandmother Meng had given him a lot of information. During the transition period of junior high school, most of it was to consolidate and revise junior high school knowledge bit by bit. There were even college entrance examination questions, just to give him a rough idea of the difficulty.
Except for the first paper, Song Yu didn't prepare to write at all, but he slowly got the hang of it.
He casually grabbed a paper at the bottom of a book. It was very difficult and didn't require him to do it. Song Yu flipped to the last question out of boredom and was stunned.
It was a very classic function problem, e to the x power and e multiplied by x.
He didn't plan to try the last question yet, but he vaguely felt that it was familiar. A very vague concept even appeared in his mind. He bit the pen and thought for a long time before finally remembering.
Wasn't this a typical example of Lagrange's mean value theorem?!
The reason why he remembered this question so clearly was probably because his high school teacher had mentioned the name of this theorem when he was expanding the way to solve the problem.
The theorem given on Baidu was very difficult to understand without a specific example. Song Yu just wanted to finish his first conversation with Xie Sui.
So he took a picture of this question and sent him a message.
For the shame of Yixue's A66, he bit the pen and thought.
He pretended to be profound.
[Do you know what Lagrange's mean value theorem is?]
Xie Sui was leaning against the bed, tapping on the computer with his fingers. He hacked into Linshui's intranet and pulled up the surveillance records.
After doing all this, he went to get the glass of water next to him and caught a glimpse of a bright message on his phone.
[Song Yu: Do you know what Lagrange's mean value theorem is?]
Xie Sui: "…"
He should be glad that he didn't drink water.
Xie Sui's grades had always been outstanding when he was a student, and he had a cold personality. He didn't have any contact with normal students.
Therefore, he couldn't understand the brain circuit of a poor student like Song Yu who relied on perseverance to solve problems.
You even have to rely on numbers to permute combinations. Why are you asking about Lagrange?
Of course, Xie Sui didn't say this question that hurt his self-esteem. Because he could see that Song Yu seemed to be very enthusiastic about learning, and he didn't want to discourage him.
Xie Sui took out a pen and a piece of paper. Taking into account Song Yu's knowledge reserve, he wrote down the standard solution to the question in detail, then took a picture and sent it over.
[Xie Sui: [Picture]]
[Xie Sui: You don't need that.]
Song Yu waited for a long time for this sentence and a picture with clear ideas and beautiful handwriting.
It was even easier to understand than the answer.
Amazing. As expected of the protagonist, the pride of the heavens.
However, when Song Yu reached a dead end, he persevered and continued to ask questions.
[Song Yu: How do you solve it with that?]
He also sent a few emoticons.
[[Scratching Head Question Mark]]
[[Ballballyou]]
Xie Sui's fingers paused on the yellow bean. He seemed to have seen Song Yu's troubled look on the other side of the phone. He was a little lost in thought, then his thin lips curled up.
[Xie Sui: You want to know that much?]
[Song Yu: Yes.]
[Xie Sui: Cross out the big paragraph from the third to the fifth line and change it to "Know from Lagrange's Mean Value Theorem".]
“？？？”
After Song Yu did as he said, she let out a sigh of regret that she was a bad student.
[Song Yu: There is a number that makes them equal in the interval.]
Xie Sui didn't want to tell him that it was a theorem. He thought for a while, then lowered his eyelashes and smiled mischievously.
[Xie Sui: Didn't I give you a interval? You can go through them one by one. You'll find that number.]
Song Yu: "…"
Song Yu: "…"
Your f * cking interval is infinite!
Why did he feel that Xie Sui was mocking him?
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