My next year A is a little trickster?

As soon as Xia Qingzhe got home, he collapsed on the sofa and called Yang Yan.

"I will substitute for you in the future, without your compensation."

Yang Yan's exclaimed voice came from the mobile phone, "Damn! Is there such a good thing?"

Fortunately, Xia Qingzhe held the phone away from his ears in advance, otherwise he would have been knocked out.

"Only for two days on weekends."

"Tch, let me just say, you're not chasing people, you value sex over friends!"

"Whether love promises or not—"

"Promise! Weekends are weekends, I can sleep too late—"

Before Yang Yan could finish speaking, there was a beep from the phone, and Xia Qingzhe hung up the phone.

Yang Yan: "..."

Just as he was about to go upstairs, Dai Feize came back with a lot of lunch boxes.

Xia Qingzhe sat back on the sofa again, crossing his legs like an old man, "It's just in time for you to come back, I'll have dinner with you."

"Didn't you go out to find your future partner? Didn't you even eat together?"

Dai Feize opened all the lunch boxes. Fortunately, he ordered a few more dishes today, which is enough for two people.

Xia Qingzhe stuffed a piece of pork ribs into his mouth. It was quite delicious, but not as delicious as his cooking.

Spit out the bones, and replied lightly, "I refuse."

Dai Feize was surprised, "Why?"

"He made me feel wronged."

Dai Feize: "..."

"Everyone has spoken and you still refuse? You should do your best! Be careful that they won't invite you in the future."

Xia Qingzhe rolled his eyes at Dai Feize, "If he doesn't invite me, I can invite him, stupid!"

Dai Feize said again: "..."

"Do you have class tomorrow morning?"

Xia Qingzhe looked disgusted, "Why are you smiling so stupidly?"

Dai Feize immediately put a chicken leg into his bowl, and smiled more and more flatteringly, "That means it's gone, give me a math class!"

Xia Qingzhe took two bites of the chicken leg and gnawed, "Why should I substitute for you? Go by yourself!"

"Just pretend I'm begging you, okay?"

"What class is it?"

Seeing that Xia Qingzhe agreed, Dai Feize quickly picked up a piece of ribs for him, "Three or four classes!"

Every time Dai Feize asked Xia Qingzhe to do him a little favor, Xia Qingzhe said he didn't like it, but in fact he would agree. Who made him live under someone else's roof now?

When he rushed to the classroom the next day, the teacher was already calling the roll, and the name "Dai Feize" seemed to have already been called.

The professor picked up the list of students, with a kind face on his face, "Dai Feize hasn't arrived yet? Raise your hand when you arrive!"

"It's here! It's here! Here it is!"

Xia Qingzhe hurried into the classroom, luckily he caught up.

"Find a seat when you arrive."

"So let's start today with the 'Convergence Principle' section."

At first Xia Qingzhe thought that the professor would be an old man, but he was quite young. Even if there were a little wrinkle, it would only make people sigh: the charm of a man.

He spoke vividly on the podium, but there were still some students playing with their mobile phones below. As a sophomore student, Xia Qingzhe expressed sympathy for their freshman students from the Department of Mathematics.

Basically every day is full of classes, otherwise Dai Feize wouldn't be complaining to him every day.

He was originally a substitute for Dai Feize, and he was in a hurry to go out. He didn't bring anything, so someone came.

"Hey classmate, can you share the textbook?"

"Yes." The girl next to him saw that he was a handsome guy, and shyly pushed the book to the middle.

"Have any students got up and answered 'What conditions can be added to the bounded sequence to ensure that it will converge?'"

As soon as the professor asked to answer questions, each and every student immediately lowered their heads and pretended to read a book, fearing that they would be drawn out to answer the questions if they looked at each other for just a second.

"Since no one took the initiative to answer the question, then I will call names at random?"

The moment the professor picked up the student list, the students didn't even dare to kick the air. The air in the entire classroom seemed to stop flowing, and there was an inexplicable suffocation.

"Dai Feize, get up and answer."

When the professor called out the name "Dai Feize", the other students collectively breathed a sigh of relief.

Xia Qingzhe stood up uncertainly, "Shall I answer?"

Naturally, the professor asked, "Otherwise?"

Xia Qingzhe cleared his throat, "As long as monotonicity is added to the bounded sequence, it will converge, and the limit is the supremum (when the sequence increases monotonically) or the infimum ( When the series decreases monotonically), so the monotonically bounded series must converge.”

"Student Dai Feize answered very well. I believe many of you can, but you are just too embarrassed to get up and answer. I hope you will be more active next time when people get up to answer questions."

The professor continued with the lecture.

Xia Qingzhe acted as if nothing had happened, and lowered his head to send a message to Dai Feize.

——You are finished, your score teacher may have an impression of you.

——? ? ?what have you done in my name