"Go, go!" Lao Lu couldn't hold it anymore, "Our master and apprentice are chatting, what's the matter with you!" ”

"What else do you say?" Speaking of this, Lao Liu was even more angry, and scolded angrily: "You Lao Lu is also our retired professor of Aurora, how can you turn your elbow out!" ”

"Xiao Ran is a student of Aurora High School, and you are a retired professor of Aurora, you don't want to turn Xiao Ran to our Aurora, just forget it, and inform Yan Dahuaqing's Lao Tian Boss Yan as soon as possible, do you still have Aurora in your heart!"

She has been in Aurora for so many years, and she is simply unorganized and undisciplined!

If you kidnap Xiao Ran to our Aurora, then I won't be the first to get the moon near the water, and I can accept Xiao Ran as a student...... Ahem!

In short, in the final analysis, this matter is all because Lao Lu, an old thing, only has himself in his heart, and does not have the big family of Aurora.

Aurora rebel Lu Mingzhe, out of the ranks!

"Let my students go to Aurora? Xiao Ran's talent is so high, did he go to Aurora to bury his talents! Lao Lu blew his beard and glared.

Lao Liu was heartbroken: "Don't forget that you yourself used to be a professor of Aurora!" ”

Lao Lu took it for granted: "Now I'm Yanda!" ”

Lao Liu: ......

"What's wrong with Yan Da, Yan Da is amazing!" Lao Liu's face flushed, green tendons bloomed on his forehead, and he argued, "Qingbei is just taking advantage of the dividends of the times, what Top2, university...... Can things between universities be measured simply by rankings? ”

One after another is difficult to understand, what "the times are developing", what "latecomers may not be able to catch up" and so on.

Lao Lu: ......

Xiao Ran: ......

"Don't worry about him, Lao Liu is just a relapse of his old illness." Lao Lu pursed his lips and set his eyes on Xiao Ran.

"By the way, why do you have time to come and see me today, a bad old man?"

Xiao Ran smiled a little embarrassedly: "It's a little ashamed to say it, the teacher has given me so much help in the past six months, but I haven't come to visit you once, now that the college entrance examination has ended, if I don't know how to thank you, then I will really become a wolf-hearted person." ”

"Come less!" Lao Lu scolded with a smile: "I think it's because you kid has no clue what problems he encountered, so he remembered that I was an old man." ”

Belch..... Xiao Ran held back for a moment before smiling wryly: "The teacher is wise." ”

"What's wise or not, don't pat me on the back." Lao Lu chuckled, then put away his smile and admonished: "What you did was right, and this is what I admire about you." ”

"Pure, hard-working, unmoved by external objects, I see in you your love for mathematics and that stubborn energy, which is also the spirit that the younger generation of academic researchers lack now."

Xiao Ran was praised by Lao Lu and blushed.

I...... Is it pure?

Xiao Ran couldn't help but ask in his heart, and then thought of his own absurdity recently, and nodded solemnly.

Well!

Pure without a doubt!

Xiao Ran gave himself an affirmative answer!

Although he has recently been obsessed with women, he has no intention of studying.

But who's to say that this isn't a kind of purity?

Pure old color batch is also pure!

"As an academic researcher, you should be pure, if you only think about studying the world, and focus on how to pat the leader and pat the mentor's ass, this kind of person may live well, but he will definitely not achieve much in the academic field!"

Lao Lu looked at Xiao Ran earnestly: "Do you understand?" ”

Xiao Ran was silent for a moment, then met Lao Lu's gaze with a smile, and nodded solemnly: "I understand, teacher." ”

"Hahaha, it's good to understand, you are my most proud student, if you don't understand any questions in the future, just come to me, an old man, don't fix those vain heads."

Good!

Lao Deng, I stopped the ghost fire downstairs of your house, is it safe?

Lao Lu said this, is that what he meant?

Xiao Ran: ...... Damn, why the hell did I suddenly think of this?

He had a strange look on his face, and he almost wanted to slap himself.

The Internet is really harmful, and he, a good student with five stresses and four beauties, has become a cyber gentleman after a few years of mixing on the Internet.

Hurry up and filial piety, it's really a win!

"Ahem, Xiao Ran, actually, if you don't understand anything, you can also come and ask me, I promise to teach better than Lao Lu." At this time, Lao Liu cheekily interjected.

Lao Lu glared at him when he heard this, and said, "Go, go, the exchange between our Yan teachers and students, what kind of excitement are you making for an Aurora!" ”

Lao Liu was instantly anxious, and said angrily: "Lao Lu, you haven't entered the door of Yanda yet, you think of yourself as Yanda when you open and close your mouth, do you still want to be shameless?" ”

Lao Lu glanced at him obliquely and said, "It's better than someone shamelessly robbing other people's students." ”

"This ...... How about this thing... How can it be said that it is robbing students......" Lao Liu blushed and said, "Robbing students...... Can it be said that the matter of education is robbing! ”

"It's insulting!"

"Whether it's or not, you know in your own heart."

"Spend the belly of a gentleman with the heart of a villain, Lao Lu, you are too narrow-minded!"

"Others rob your students in front of you, and you have a big heart to show me?"

"It's all said, cultivating students is our duty as teachers, what does it have to do with robbing students?"

"You're just breaking the sky, this is also robbing students, phew!"

“......”

"Alright, I said you two can stop it!" At this time, the master walked in with three cups of hot tea, and after serving Xiao Ran a cup, she glared at the two of them angrily.

Shuluo said: "Just the way you two look now, you are embarrassed to be a teacher of Xiao Ran, you see how you have a little bit of a teacher!" ”

Being glared at by his wife like this, Lao Lu instantly felt a chill in his back, and hurriedly subconsciously defended: "What, I was joking with Lao Liu, you said yes, Lao Liu." ”

"That's right, sister-in-law, the two of us didn't quarrel, but we just spoke a little louder." Lao Liu also smiled and said.

"It's better to be like this." The master gave the two of them a blank look, put down two cups of hot tea, and threw down a sentence: "The meal will be ready soon, and I will come down to eat later." ”

It wasn't until after the master and wife left that the two unconsciously breathed a sigh of relief, looked at each other, and neither of them spoke.

The air seemed quiet at this moment.

In order to avoid embarrassment, Xiao Ran had to find a target to divert his attention, and at this moment, he happened to notice the scattered mathematical formulas on the desktop and a problem about solving a system of sparse linear equations.

"Given a matrix of real variables A of n×n and an n-dimensional vector b, we calculate A^{-1} b, where we assume that A is sparse, i.e., the number of non-zero elements of A does not exceed O⁻(n), and the number of conditions of A does not exceed )n^{O(1)}, and the error of the output answer is required to be no more than )n^{-O(1)}"

This seems to be the topic that the teacher just discussed?

Xiao Ran rubbed his chin and became interested.