"6 meters, I won. Shen Qi stood up from the sand pit and patted the sand.

"I'm shocked, Shen Qi. Xu Rui was puzzled, "This kind of long jump that helps running is not a standing long jump, and it is difficult for ordinary high school students who have not received professional track and field training to jump more than 6 meters, unless they are born with amazing jumping power." And you are clearly not the latter, nor the former. ”

Shen Qi said: "In recent months, I have been practicing running every day. ”

"You practice aerobic low-to-medium speed running, does it have anything to do with the long jump?"

"Is it okay?"

"Is there one?"

"Didn't you?"

"Don't talk about it, I admit defeat and invite you to eat chicken steak at night. Damn, I've been poor and died lately, but don't worry, no matter how poor I am, I won't break my promise. Xu Rui sat on the ground on the edge of the bunker, unzipped the sports bag and took out two bottles of Treasure Caricato, handed one to Shen Qi, and kept one for himself.

"The track and field team eats and drinks, and also distributes nutritional products, where does your money go?" Shen Qi took the drink, unscrewed the bottle cap, and poured a few sips.

"Hey, hey, I recently met a girl, super beautiful, of course it costs money. Xu Rui smiled happily, took out his mobile phone from his sports bag, and clicked on a photo for Shen Qi to observe, this is Chi Guoguo's dog abuse behavior, proving that he is out of order.

Shen Qi admired the girl's photo with great interest, and then spit out a drink with a "poof".

"What if you study well, it's not like a single dog, hahaha. Xu Rui couldn't stop laughing, very suffocating.

"Ahem. Shen Qi choked on the water and coughed a few times.

"Are you amazed by my sister-in-law, single dog?" Xu Rui swiped the phone screen, "Look, there's, this, this, there's this." ”

Shen Qi couldn't help it: "This is your sister-in-law?"

"Yes. ”

"She's got to weigh 180 pounds, right?

Xu Rui asked rhetorically: "What's wrong with 180 pounds? She is a student of the provincial government, focusing on shot put, and we met in the provincial U19 games." ”

"Xu Rui, is there something wrong with your aesthetics?" Shen Qi couldn't understand.

"You have a problem with aesthetics!" Xu Rui was unhappy, and added: "I'm serious, Shen Qi, I believe in love again." I'll show you the picture when you're a brother, don't make me mad. ”

"Okay, good, I wish you happiness, the sea is dry and the stone is rotten and the white head is not separated. Hey, Xu Rui, do you know your parents?"

"Hide it first, and tell them when you're in college. So I have to win the national U19 100m championship and go to Tsinghua. As long as I am sent to Tsinghua University, hehe, then I can do whatever I want, just like Shen Qi. ”

"A girl changes a man's life. Shen Qi sighed that he was only more than 130 pounds, and it was difficult to accept his girlfriend who was 180 pounds.

The two chatted for a while, and when it was almost two o'clock, Shen Qi walked towards the teaching building, and Xu Rui stayed on the playground to train hard, for his Tsinghua dream and his shot put girl.

As soon as he walked to the teaching building, Shen Qi's mobile phone vibrated a little, he took out his mobile phone and took a look, hey, the editor sent a message on the buckle.

More than a week ago, Shen Qi submitted a mathematics paper to the editorial office of "Mathematical Innovation News", leaving his mobile phone number and deduction number.

The next day, an editor of the "Mathematical Innovation News" added Shen Qi as a friend and said to keep in touch.

Then a week passed without any connection.

Shen Qi even thought in frustration that his debut thesis had been clicked off and was preparing to write a new thesis.

Fortunately, the editor sent an exciting news at this time: "Shen Qi, after the preliminary review, the paper "Some Solutions of Linear Nonhomogeneous Differential Equations with Second-Order Constant Coefficients" submitted to our journal meets the requirements of our journal, and I would like to discuss some details of the paper with you in depth." Hope to reply. ”

Shen Qi immediately replied: "Okay." ”

Editor: "On page 7 of your paper, let y=vx, and substitute the equation to separate the variables, and get the solution of the variable separation and the homogeneous equation. ”

"I don't dare to agree with the method of separation of ordinary differential equations you use, you can solve high math problems with this method, but when you write a paper, it is not rigorous enough. ”

"Also, on page 12, I think you misunderstood the Ricatti equation, and I don't understand how you transform z=v+u^-1 to linear?"

"Of course, the flaws are not hidden, except for the above few minor problems, the overall conception and presentation of your paper basically meet the publication requirements. ”

"I'm talking to you today, I hope you can make errata. Shen Qi, what do you think?"

What do I think? I have so many opinions that I can't tell you in one or two sentences.

Shen Qi replied: "Please wait a moment, I will ask the school leaders to give you an answer later." ”

There are still a few minutes to go to class, and the first class in the afternoon is math class.

Shen Qi said hello to Zhang Wanbang and said that he wanted to go to the school library to check some information.

Zhang Wanbang waved his hand, go, what do you like, you don't have to ask me.

Shen Qi came to the library, which was empty with only one administrator guarding the door.

There is no need to check the information, Shen Qi can't use the information in the school library at all, he took out his mobile phone and discussed with the editor: "Sorry, I've kept you waiting." I'll start with page 7, where I introduce new variables t and v, so that equation (8) can be seen as a parametric equation of x and y with respect to v, and then I will logically calculate dy/dx and d^2y/dx^2......"

"Please turn to page 11 of my paper, I substitute equation (15) and get a second-order equation with t as a function of v, which may be a bit jumpy here, but it is closely related, I hope you can gain insight into ......"

"The discussion on page 12 is also related to the conclusion on page 14, I fixed the α of the undetermined constant, so as to eliminate the exponential factor, so that v no longer appears obviously, and then transformed z=dv/dt to reduce the second-order equation to the first order and derive a general solution formula...... Can you understand that when I explain it that way?"

The editor on the other end of the button was silent for ten minutes.

Shen Qi was a little anxious: "Are you still online?"

The editor finally replied, this time not discussing academic issues, but asked: "Shen Qi, may I ask which institution you belong to? ”

Shen Qi: "Local." ”

Although it cannot compete with Acta Mathematica Sinica, the most authoritative and longest-established mathematics journal in China, the young Journal of Mathematical Innovation is also one of the thriving professional mathematics journals in China.

When the editor of the "Mathematical Innovation News" learned that Shen Qi was local, he asked: "Which local university is we?

Shen Qi: "I'm from high school. ”

Editor: "Teacher Shen, may I ask which high school you teach in your local area?"

Shen Qi couldn't cry or laugh, and high school mathematics teachers also wrote papers and submitted them to professional journals in order to evaluate their titles.

But I'm not a teacher!

Shen Qixin said, how to explain this to the editor?