God-level Xueba system

Yan Xin and Lin Hui were only five meters apart.

Lin Hui froze in place after hearing Yan Xin's words.

And Yan Xin also looked at Lin Hui expectantly and anxiously.

【Ding!Congratulations to the host for completing the task!Reward 99 roses! 】

With Yan Xin's hand behind her back, 99 roses suddenly appeared!

The two of them stared at each other awkwardly for ten seconds, and then Yan Xin gave a dry cough before Lin Hui realized it.

"I"

"You don't have to answer me in a hurry!"

Yan Xin suddenly took out a large bouquet of roses from behind her like a magic trick!

And this move also attracted the attention of the people around!
Everyone gathered together to see what this handsome man and beautiful woman were doing!
Lin Hui's face was like a summer peach, with a reddish glow, Yan Xin couldn't help but want to take a bite.

Lin An also didn't know what to say.

In the past, Lin Hui directly rejected the boys who confessed to her.

But facing Yan Xin, Lin Hui really didn't know how to deal with it!

"Uh, can you wait any longer?"

Lin Hui reached out and took the 99 roses, then looked at Yan Xin with a smile.

Yan Xin naturally understood that Lin Hui was just not ready.

"Okay! I'll wait for your answer!" Yan Xin smiled and handed the bouquet to Lin Hui.

And the people around couldn't understand Chinese at all, just watched the girl accept the boy's flower, and applauded instantly.

Under the watchful eyes of everyone, Yan Xin sent Lin Hui back to the dormitory.

Experts Apartment.

"Are you back? Didn't you live outside tonight?"

After seeing Yan Xin enter the door, Qi Wanning asked with a wicked smile.

"Shut up!" Yan Xin shook her head helplessly.

"Then you see your first love again, and your old friends reunite, so you can't have a night of singing and singing!" Qi Wanning teased deliberately.

"Huh? Let me tell you, you girl, you really want to be beaten! You are not very old, but you know a lot!" Yan Xin went up and gave Qi Wanning a headache.

"Come on, let's treat you!"

"All right!"

Qi Wanning gambled impatiently, then obediently lay down on the sofa
The next day.

Georgia Tech Center for the Arts and Sports.

Today is the same as yesterday, there are only more people, not fewer.

In order to take care of Long Xia's fans, Yan Xin started the lecture at [-] o'clock in the morning.

Yan Xinwang, who was smiling like a flower in the crowd, Lin Hui also laughed foolishly.

Seats.

"I said fen, are you still not going to tell me who gave you this bouquet of roses?"

Since last night, Annie has been nagging in front of Lin Hui like a repeater.

"You are talking! You have never accepted other people's bouquets before! Why did you suddenly become enlightened today?" Annie asked.

"Oh! I really admire you! My boyfriend gave it to me, okay?"

Lin Hui was really annoyed to death by this girl!
Looking at the serious Yan Xin on the stage, Lin Hui said this uncontrollably.

Boy friend?
What are you still hesitating about?

Looking at Yan Xin who was always smiling on the stage, Lin Hui couldn't help but also burst out laughing.

"What! Boyfriend? Lin Hui, you have a boyfriend!?"

Annie's voice caused disgust from everyone around her.

What is this silly girl doing?
Yelling in this public place is very rude!

"Keep your voice down! Everyone is watching us!" Lin Hui quickly pushed Annie, signaling the girl to shut up quickly.

"Hui, you are not lying to me, are you?! You have a boyfriend? Who is it? Where is it? Is he handsome? Is he rich? Do you have any photos? Show me!"

Lin Hui was speechless for a while.

Blame myself for talking too much!
It was unnecessary to tell Annie about it!

"Okay! I was just joking! Who told you to keep asking me!" Lin An said angrily.

"Then who gave this bouquet of roses?" Annie blinked.

Lin Hui looked at a little girl playing on the lawn outside the Art Sports Center. Lin Hui rolled her eyes and suddenly had an idea.

"Hey, let me tell you the truth! It was given to me by a little girl yesterday, and I don't know who the real owner is!"

After Annie heard what Lin Hui said, she began to have infinite reverie again.

Lin Hui sighed.

This girl finally calmed down!
I shouldn't have said it was my boyfriend just now, otherwise, with Annie's character, the whole school would know about it within a long time!
Seeing Yan Xin who was still arranging toilet paper in the stands, Lin Hui brushed her hair behind her ears, took out her notebook, sat quietly on a chair, and waited for Yan Xin to speak.

"Good morning everyone! Today we will continue what we did not finish yesterday! The last problem of the Millennium Problem: the Navel-Stokes equation!"

"Anchor Yan Xin is so caring!"

"That's right! In order for us to hear the answer, we chose to broadcast it live at seven or eight o'clock in the evening!"

"It's good, but there is no comfort red envelope from last night!"

"Hahaha! That's right! After all, it was early in the morning!"

"By the way, after the explanation of this question is completed, will the millennium problem be completely solved?"

"That's a must!"

Yan Xin looked at the crowd in the audience.

There are more viewers today than yesterday.

And in the crowd, I saw that familiar figure at a glance.

Fate is so wonderful.

Yesterday Yan Xin had been carefully looking for Lin Hui's whereabouts in the crowd, and she almost had to use clairvoyance.

But just can't find it.

Since the meeting last night, Yan Xin didn't look at her much today, and Yan Xin immediately found Lin Hui in the crowd!

Smiling at Lin Hui, Yan Xin sat down and began to explain the Navel-Stokes equation.

"What I want to say is that this is the last question of the millennium problem! Regarding the Poincaré conjecture that I haven't talked about before, if you are interested, you can also go to the files in my live broadcast room to have a look! My The steps to solve the problem are much simpler than what Perelman solved before! As usual, let me explain to you first, what is the Nawer-Stokes equation!"

The Navier-Stokes equations are Navier-Stokesequations, named after Claude-Louis Navier and Georges Gabriel-Stokes.

Of course, why did I put Yang-Mills theory and the Navel-Stokes equation at the end?

That's because these two math puzzles are different from the previous ones.

Like the Riemann Hypothesis and the BSD Conjecture, although they also involve a certain amount of physical knowledge, most of them still focus on mathematics.

The Yang-Mills theory and the Navel-Stokes equation are considered to be eternal problems in the mathematics world.

But its subject is actually physics!

Navel-Stokes equation.

To put it bluntly, it is a set of equations describing fluid substances such as liquid and air, referred to as NS equations.

The Navel-Stokes equation establishes the rate of change of particle momentum of a fluid.

What is the rate of change of particle momentum?

That's high-level language.

To put it bluntly, it is acceleration!

The rate of change of particle momentum, the change of pressure acting on the interior of the liquid and the dissipation of viscous force, these three factors, together with the influence of gravity, constitute the relationship of the Nawer-Stokes equation!

Dissipative viscous force arises from molecular interactions and tells us how viscous a liquid is.Thus, the Navier-Stokes equations describe the dynamic balance of forces acting on any given region of the liquid, which is of great significance in fluid mechanics.

So what is the use of this equation?

Because the Neville-Stokes equation relationship describes the physical processes of a large number of phenomena that are useful academically and economically.So they can be used to model weather, ocean currents, water flow in pipes, motion of stars in galaxies, airflow around airfoils.

Of course, the Neville-Stokes equation relationship can also be used in the design of aircraft and vehicles, the study of blood circulation, the design of power stations, the analysis of pollution effects, and so on.

The Navel-Stokes equation is mainly based on physics and supplemented by mathematics.

Although it lacks the substantial calculation of equation numbers, it is very applicable to real life.

It can be seen that the Navel-Stokes equation is more important than the previous six millennium problems!

After all, the Nawer-Stokes equation has been solved, and there will be different achievements in medicine, mechanics, electricity, environmental science, etc.!