repeat students

"The above are the steps for the standard answer to this question." Jian Zixing wrote down the last number on the full calculus paper, and then said softly, "But the standard answer is very troublesome to solve. If you take the inverse function and draw a picture for this question, it is easy Clearly two steps to get the result, and then take the inverse and return it. Oh, let me explain first, the inverse function refers to..."

Zhong Chen looked at him with hazy eyes, opened his mouth wide and yawned.

The rainstorm warning has been issued at night, and there is no air-conditioning in the corridor, and a layer of oil can be suffocated on the face.Jian Zixing kept him from studying, and was worried that the lecture would affect other people's self-study, so he had to carry him to the corridor to practice alone.

Zhongchen was almost cold, leaning against the wall weakly, "Turn it over, turn it back, it's so comfortable to reverse it. I will, I really will."

Jian Zixing looked at him seriously, "No, you won't. Can you be more modest?"

"I really know it." Zhong Chen closed his eyes and leaned against the wall, holding his forehead with his hand, "Reverse the original function, f(x) is equal to ten to the power of x minus one, and the value range is the domain of the original function. That is, minus one to plus infinity..."

Jian Zixing raised his eyebrows, "I really know it."

Zhong Chen sighed deeply, "You really look down on our players with more than 190 points, aren't we idiots?"

"It's you, not you." Jian Zixing stared at him, "Our class is second to last in the college entrance examination with more than 300 points, and we are not in the same echelon as you."

Zhong Chen: "..."

In the third quarter of the evening self-study, I stood until my legs were numb.

Boss Jane took his younger brother who had just been recruited in studies to go through almost all the basic theorems of high school mathematics. Zhongchen heard that all four were empty, so that he couldn't force a wry smile when the old horse quietly came to peep.

The moment the school bell rang at 10:30, while Jian Zixing was still talking, someone jumped onto the window sill and sat on the window sill, with his papers under his buttocks, dangling his legs.

"What are you doing?" He was shocked, subconsciously turned his head to look at the doors of each class, and then turned around and said, "Provocation?"

"I'm going back to the dormitory." Zhong Chen said with a grimace, "Study must be done at a certain level, I've been studying for three hours in a row!"

Gao Ang, who just came out of the back door, supported his waist happily, "Brother Chen, all of us are serious seniors who study for twelve hours a day."

"You are not a senior, you are a dog." Zhong Chen sneered.

The students came out of the classroom one after another, bowed their heads and went around one by one, squinting at the moment when they were wrong.

Jian Zixing was speechless, "Okay, go back to the dormitory."

Only then was Zhong Chen satisfied, stretched lazily and jumped down from the window sill, pressing his arm on his shoulder, "Leave Peppa, go home".

Jian Zixing grabbed the paper indifferently and stuffed it into his schoolbag, "I will sew your mouth shut sooner or later."

Immediately after the thunderstorm, the bathing garden posted a notice that the water pipe was faulty, and I could not take a bath tonight.

The dormitory building was full of mourners, and everyone was mobilized, with shower gel and towels thrown in the basin, swarming in the bathroom to wash their arms and legs, queuing up from one end of the corridor to the other.

Zhong Chen swiftly changed into shorts and a vest, and looked out with a basin in his hand, "This team has fucking reached our door."

Jian Zixing also changed into pajama pants, picked up the basin, "Let's go."

The two of them reached the end of the line and hadn't stood still yet. The two boys in front turned their heads and saw Zhong Chen, and silently walked around them and walked to the back.

Zhong Chen glanced lazily, and jumped two places forward from Shan Ruliu.

As soon as he stood up, the person in front turned his head again, and then repeated the actions of the last two brothers.

When Jian Zixing came back to his senses, he had already been given a 20-meter-long line and marched to the front of the mighty long line.

He looked at Zhong Chen suddenly, "Am I bullying my classmates with you?"

Zhong Chen looked blank and innocent, "How can this be called bullying?"

Li Qiankun's roommate, who was about to enter in front, stretched out his hand and drew an arc in the air, and bowed gracefully, "This is called accepting everyone's kindness, Brother Chen, please."

Zhong Chen narrowed his eyes and snorted, "Thank you."

The newly vacated position was occupied by Zhong Chen. Jian Zixing wanted to go back to the end of the line and be honest, but unexpectedly he stretched out his hand and pulled him into it.

"Share one, hurry up, I have to watch the video after washing." Zhong Chen said.

Jian Zixing sighed, "Okay, I can wash it off."

There is water all over the floor, but fortunately it is not dirty.After receiving the water, Zhong Chen put the basin on the ground, first soaped his arms and legs with his hands, and then poured a basin of water down.

"Cool." He took two handfuls of towels, "I'm done."

"..." Jian Zixing was speechless, "Pigs even roll in the mud twice when taking a bath, are you just fooling around like this?"

"I don't know how." Zhong Chen smiled, "Brother get out first, let's set an example for younger brother."

"Get lost." Jian Zixing said wearily.

Jian Zixing has loved cleanliness since he was a child, so he is not obsessed with cleanliness, but simply likes cleanliness and refreshment.

He fetched water to wash his feet first, then changed a basin of water again, standing in the basin and holding water to wash a little bit, the shower gel was placed on the sink, it had a very cool mint smell.

Zhong Chen looked at it for a while, and gradually showed a puzzled expression.

"No." He was shocked, "Why are you moving so slowly?"

"I don't want to jump into the water." Jian Zixing curled his lips, "You wash your legs and splash yourself with water, and my pants also splashed."

"Ah." Zhongchen opened his mouth dryly, "So... sorry?"

Jian Zixing snorted and ignored him.

Paige is very delicate, and she also needs to use shower gel for casual washing in the bathroom of the dormitory. I am afraid that it will not be rinsed clean, so I wash it twice with clean water.

Zhong Chen leaned against the wall and waited for him. He was originally bored, but when he yawned, his eyes suddenly slipped to his waist.

Obviously very thin, but it shows a sense of strength.It's not the kind of surging that is outlined by muscles, but a low-key and rooted energy.

Zhong Chen looked at it for a while, thinking of the slender and delicate Asian models, and thinking of the thorny vines growing in the jungle.

The Adam's apple slipped, and he turned around the moment Jian Zixing straightened up, and raised his hand to turn on the faucet.

"Why are you washing your face?" Jian Zixing was speechless, "Didn't you wash it just now? I'm going to pour water."

Zhong Chen held the water in both hands and quickly rubbed it on his face twice, then raised his head suddenly, the water on his hair splashed.

"Come on, I just forgot whether I washed my face or not," he said.

Jian Zixing glared at him with a sullen face, two drops of water splashed by him just now on his cheeks.

"Oh." Zhong Chen gave in, reached out and stroked his face, "Okay, it's gone."

"I don't want to chop it up." Jian Zixing frowned and hid back in disgust. He didn't dodge, and gave him a hard look, "Sooner or later, I'll chop my hand."

"Okay, sew the mouth shut, and chop off the claws." Zhong Chen clicked his tongue, "It's terrible to make friends with you schoolmasters."

The two of them walked out, passing a few people waiting at the door, Jian Zixing heard someone muttering again.

One said, "Did I hear correctly, why did Zhongchen threaten Jian Zixing?"

"Close your mouth and chop your hands." The other said in horror: "I'll go, I'm really afraid that the top student won't survive the second college entrance examination."

Jian Zixing: "..."

He looked back in a daze to see who was talking, but he kept his head down and poked his finger at the phone as if nothing had happened.

"What are you looking at?" Zhong Chen yawned as if deaf in both ears, "Hurry up."

"Here we come." Jian Zixing said unhappily, followed up and said, "Be careful what you say, don't keep saying dangerous words."

"Yeah." Zhong Chen squinted his eyes and nodded perfunctorily, like a lazy big cat.

The two fell into bed, as usual, huddled together through the railing, and shared Zhongchen's earphones.

But for some reason, Jian Zixing slipped a little today.

He looked at a small circular water stain on Zhong Chen's pillow, which was pressed out by the water that Zhong Chen didn't wipe off when he climbed into bed just now.The dark edges are slowly spreading, blurring away soundlessly.

Suddenly, he thought of the moment when Zhong Chen's hand touched her in the bathroom and his cheek was sunken.

"Your face is so soft." Zhong Chen suddenly said next to him.

Jian Zixing was startled, "What?"

"It's nothing." Zhong Chen retracted his gaze, and poked his fingers calmly on the screen, "It feels super soft to the touch just now, similar to my mother, but my mother spends a lot of money on skin care products every year, what do you belong to? "

"What?" Jian Zixing was confused.

Zhong Chen suddenly raised the corners of his lips, "You have a juvenile face."

"..." Jian Zixing pressed his hands on his back, "Don't beg for mercy, I will push you off the bed right now."

Zhong Chen was so happy that the bed frame was shaking, he clicked on the video playback while enjoying himself.

But Jian Zixing slipped away again, and this time he simply didn't know where he slipped away, and his thoughts went blank.

Until the people around Yu Guangli seemed to froze suddenly, and before they could react, Zhong Chen raised his hand and paused the video.

The progress bar pulls back for two seconds, plays, stops at the place just now, and then pulls back.

After repeating it three times, Jian Zixing finally came back to his senses—in the clip played repeatedly by Zhong Chen, a man turned from the depths of the alley, passed the camera, and then quickly disappeared.

Everyone is swishing at high speed, but the rush of color and video acceleration are two completely different feelings, and the contrast is very obvious in the video.

It was a tall man, thin and strong, wearing an unremarkable dark gray sportswear with a coat and hat buttoned up, his side face was completely covered, and his skin was dark from the exposed hands.He bowed his head and walked quickly, even after returning to the original speed, it took only six seconds from entering the camera to walking out.

Zhong Chen's hand holding the phone trembled slightly, his eyes widened. After a while, he raised the phone to his eyes and tried to zoom in on the screen with two fingers.

The screen size remains the same, but the progress bar is dragged.Zhong Chen flicked his fingers weakly on the screen, gradually showing anxiety, and Jian Zixing grabbed him in time.

"I'll do it." He grabbed the phone, took a screenshot when the man walked to the center, and then zoomed in with two fingers.

The side face on the screen is blurry, and the facial features were originally covered by the coat and hat.

"How sure?" Jian Zixing looked at Zhong Chen.

"I don't know." Zhong Chen's voice was a little trembling, he stared at the details that were blurred by pixels, and his panting was trembling.

"It's very similar." His Adam's apple moved, and his feet were on the railing of the bed. "It's that kind of feeling... I haven't seen him for many years, but I think he is like this."

"And this person is still very secretive." Jian Zixing nodded, holding Zhong Chen's hand, "Brother Chen, don't worry, don't hope. Let's observe for two more days to see if he will appear again."

"En." Zhong Chen's lips trembled inadvertently, and it took a while to recover, his palms were full of sweat.

He held Jian Zixing tightly, "He should appear again, I think he is very similar to the back view I saw on the news before the college entrance examination. If it is a person, these two times can basically prove that he lives in this area .”

"That's right." Jian Zixing zoomed in on the photo again, pointing to the blurry pattern on the chest of the clothes and said, "Did you see this? It looks like a compass logo, starting with a brand."

Zhong Chen didn't pay attention at all, and after being reminded by him, he looked carefully for a while before he barely recognized it.

"art sorts".Jian Zixing said, "When we went to the milk tea shop to borrow Internet, we passed by it. About 300 meters away in that alley, there are several shops selling clothes of various brands, and this is one of them."

Zhongchen was stunned for a while, then turned his head and said in a hoarse voice: "Yes, you are worthy of being a top student."

There was no one else in the dormitory, and the noisy queues in the corridor made it seem that the room was too quiet.

When Jian Zixing heard Zhong Chen's panting, he didn't make much movement, but it seemed to be pulling people's hearts.

Zhong Chen held the phone in front of him, "What else do you see?"

"There is also a hat." Jian Zixing said, "Didn't you tell me that he was wearing a baseball cap in the video of the accident? In fact, most people would choose a baseball cap to hide their appearance, because the brim of the hat is long, and you can lower your head slightly. All facial features are covered."

Zhong Chen nodded numbly, and for some reason suddenly remembered that Jian Zixing also liked to wear hats, and he always lowered the brim of his hat habitually.

Jian Zixing said, "Baseball caps are the first choice, masks are the second choice, and coats and hats are the second choice. This kind of hat has a better effect on covering the side face, but it can't cover the front face at all. I guess he may really live near here, and online shopping will reveal information. , so I usually just buy clothes casually in street stores. Today’s trip should be a temporary shopping trip, so I just buttoned up a coat and hat.”

Zhong Chen didn't say a word. After a while, he tapped the screen, and the video continued to fast-forward at a high speed. After more than a minute, he reached out his hand again to pause.

——That person appeared again, completely as expected, carrying a plastic bag without any logo in his hand, which contained a transparent fast food box.

"Shun Kee Fried Rice." Jian Zixing said, "I passed by last time, and that street is full of mala tang and milk tea shops, and only Shun Kee's can use this kind of flat fast food box."

Zhong Chen silently threw the phone away, and a few seconds later, he knelt up and jumped over the railing to hug Jian Zixing forcefully.

Familiar feeling of suffocation, but more inexplicable sadness than before.

Jian Zixing didn't know what to say, after a while, he raised his hand and patted Zhong Chen's back lightly.

"Brother Chen, these are all very simple and reasonable speculations." He said softly, "It's normal for you to be confused, but I will help you check it out next to you. Let's go to that place on weekends and find an unremarkable Squat in a corner for two days, and he will definitely show up again."

"I'll go by myself." Zhong Chen's voice was low and hoarse, and after a while he said softly, "Don't you have a game on Saturday? I won't be with you for the first game, okay?"

"Of course." Jian Zixing suddenly felt a little distressed, "I'll be right back after the competition, and then I'll squat with you."

"En." Zhong Chen hugged him vigorously, took a deep breath after half a day, let go of his hands and fell back to his side, leaning against the wall in a daze.

"Brother Chen, it's good to have clues." Jian Zixing said in a low voice, "No matter what you say, let's take a step forward."

"I know." Zhong Chen lowered his eyes.

After a while, he took another deep breath, raised his hand and rubbed his cheek vigorously, "I'm just a little scared. This person is so similar to the person in the previous car accident video, I can almost be sure that it is the same person. But if it is true Find out this person, not my father—”

"That doesn't mean anything." Jian Zixing held his hand and squeezed it hard, "Before you saw the video of the car accident, did you believe that your father was still alive?"

After a long time, Zhong Chen nodded slightly.

"That's the truth." Jian Zixing said, "Trial and error are all moving forward. Brother Chen, if you think about it from a macro perspective, assuming we finally find your father, then every step now Go forward. Pull up! Don't back down!"

"Yeah." Zhong Chen stared at the hands held together by the two, and after a while he twitched the corners of his mouth in a vain manner, "The holistic method you taught several times today."

"Yes, when looking at overly complex physical processes, use the overall method first, and then the parts." Jian Zixing raised the corner of his mouth, "It's the same way of thinking as we are looking for someone. You have to admit that every step is developing in a good direction, and then I put my best effort into every little detail."

There was finally a gleam in the dark eyes on the opposite side.

Zhong Chen sighed suddenly and looked at him, "Peppa, you are the same as I thought at first."

"What's the same?" Jian Zixing was slightly taken aback.

"That's right, dare to think and dare to take." Zhong Chen met his eyes, "He has more responsibility than me."

Jian Zixing sighed, felt under the quilt, took out the Rubik's cube and threw it to him.

"Twist the Rubik's Cube if you feel confused, don't you know how to twist?" Jian Zixing said, "Distract your attention, and it will be fine soon. This matter has a big impact at the beginning, so you should straighten it out and digest it, and you will have to fight for it later."

"I know." Zhong Chen took it and threw it back, muttering: "But I don't like twisting this crap, and I can distract myself by playing with my phone."

Zhongchen said that he needed to use his mobile phone to distract his attention, so he really went to play with his mobile phone.

Jian Zixing didn't dare to lie down at first, but he was relieved when he found out that the old man was seriously posting.He lay down under the quilt, and silently clicked on the picture to look hard, wishing he could disassemble pixel by pixel, trying to catch some little clues.

In fact, he didn't say it just now, he didn't think this person was.

Can't tell the actual reason.It just feels like this person doesn't seem to be able to run fast, but why is he running fast?Does it match the inexplicable sense of stalking behind you that night?The feeling that night was originally very mysterious, most likely it was imagined.

Jian Zixing sighed, the quilt covering his head was suddenly pulled.

"Hey." Zhong Chen yelled at him, "Come and see."

Jian Zixing hastily stuffed the phone under the pillow, opened it and got out, "What are you looking at?"

"What kind of qualities are Yingzhong people?" Zhong Chen frowned, "It's okay to exaggerate and talk about my irascibility, why are you still making up a love history for me?"

Jian Zixing choked for no reason.

"Look at this passage." Zhong Chen could not wait to twitch his eyebrows together, "I heard that a certain bully with the surname Z likes physical characteristics, especially basketball players, who are high-level and can play tricks. I collected pictures on the Internet, probably This style of painting."

As he spoke, he turned the phone over, and Jian Zixing saw a photo of a female caveman on the screen.

"..."

Zhong Chen was ashamed and humiliated, "What the hell? Who would like this kind of girl? I'm afraid it's some girl who has a crush on me who is talking nonsense. What is it called? If you can't get it, you will smear it?"

Jian Zixing stared at him silently, "Then what kind of girl do you like?"

"I'm happy..." Zhong Chen suddenly choked on the words.

Jian Zixing looked at him with open eyes full of curiosity, just like when he was studying the papers of foreign great masters on robot modeling.

Full of the spirit of investigation and knowledge.

Zhong Chen choked for a long time before he muttered: "I like white ones, slender but strong, and black hair! Yes, it's best if your personality is a little volatile, yin and yang, arrogant and arrogant, and you will laugh at you suddenly The cute kind."

Jian Zixing frowned.

He pondered for a while, then asked in confusion, "... Sadako?"

Zhong Chen: "..."