"Knock knock!"

There was a knock on the door of Chen Zhou's room.

The knock on the door temporarily pulled Chen Zhou back to reality from the world of mathematics.

Frowning slightly, Chen Zhou got up and went to open the door.

This feeling of being interrupted is the last thing he likes.

Otherwise, he wouldn't have turned off his phone.

When the door was opened, it was Dean Sun and his party standing at the door.

Seeing Chen Zhou appear at the door, Dean Sun was completely relieved.

Immediately, Dean Sun said: "You kid, don't say a word when you come back, it's easy for us to find it!"

Chen Zhou suddenly wondered, didn't you leave me when you entered the venue?

And you didn't say you wanted me to wait for you together?

"Well, I ran into Professor Zhang Shouwu and Professor Zhang Yitang, chatted with them for a few words, and then came back. Chen Zhou thought so, but he still said truthfully.

When Dean Sun heard this, he said, "When you are abroad, remember to say it wherever you go. ”

Chen Zhou nodded honestly.

After a pause, Dean Sun said again: "You haven't eaten yet, right? Let's go, let's eat together." ”

Chen Zhou thought for a while and nodded again: "Okay." ”

During the meal, he learned the whole thing from Zeng Zigu and Liu Maosheng.

Chen Zhou couldn't help crying and laughing, but he felt a trace of warmth in his heart.

When he goes abroad, Dean Sun, the "captain", is very responsible.

After finishing lunch, Chen Zhou was ready to go back to his room and continue the research just now.

Originally, he wasn't going to have lunch, but if he remembered, he would still eat it.

"There were two nice presentations in the afternoon, both of which should not be missed. Dean Sun remembered the schedule of the afternoon meeting and immediately reminded.

Chen Zhou, Liu Maosheng and others all responded, and then Chen Zhou was about to leave.

Looking at Chen Zhou in a hurry, Dean Sun couldn't help but wonder, "You want to take a nap?"

Chen Zhou shook his head: "No. ”

Dean Sun asked, "Then what are you going to do?"

Chen Zhou replied, "Retreat!"

After saying that, everyone who was left with a stunned face walked quickly back to the room.

"What did he just say?" Dean Sun asked uncertainly.

"Dean, he said retreat!" Liu Maosheng also looked at the direction in which Chen Zhou disappeared.

"Hasn't he already finished his thesis? What else is he retreating?" Zou Minwang said subconsciously.

But Dean Sun didn't speak again, and had already walked towards his room.

Countless thoughts flashed through Dean Sun's heart, but he couldn't determine where Chen Zhou had come.

Judging from the papers that have been submitted to MIT, it should not be so fast.

But, it's hard to say......

After returning to the room, Chen Zhou, who was sitting at the table, took a deep breath.

He took out a new stack of scratch paper from his backpack and replaced the empty refills.

Immerse yourself in the world in front of you again.

This time, no one bothered him again.

His mind was filled with thoughts about prime intervals.

His mind revolved around the Kramel conjecture.

Through the discussion with Zhang Yitang, Chen Zhou got the inspiration of that moment.

Zhang Yitang's paper "Bounded Distances Between Prime Numbers" has been peeled off by him.

And the ultimate effect of this inspiration is reflected in the distributive deconstruction method.

The problem of the interval of prime numbers is a big proposition.

It contains the Kramel conjecture, the twin prime conjecture, the Jebov conjecture, and so on.

But the way to solve this proposition is always a little bit different.

Chen Zhou's distribution deconstruction method itself gradually evolved from the sieve method, the circle method and the consistent distribution.

Although there were times when he walked into a dead end in thinking, fortunately, Chen Zhou finally walked out.

Coupled with the clever use of the problem set, Chen Zhou can always ensure his direction.

This kind of experience is also something that Chen Zhou did not expect.

Because the experience comes too fast and is too intensive.

It can be said that this is an explosion of thinking.

He had previously experienced it when he proved the hail conjecture, and he also experienced it when he invented the method of distribution deconstruction and completed the extension of the Crummel conjecture.

However, this is only a few short months.

Since returning to the room after lunch that day, Chen Zhou has never stepped out of the door again.

He locked himself in his room in this hotel.

He even lost track of time, that he had a briefing that he had already adjusted.

Even the meal was specially arranged by Dean Sun to be brought to him by the waiter of the hotel.

Otherwise, Chen Zhou would probably be starved by himself.

And Yang Yiyi also said it briefly because Chen Zhou only said it briefly, except for sending him a message in the past few days, she didn't bother Chen Zhou at all.

The tacit understanding between the two has long been formed.

Chen Zhou made full use of his time and really devoted himself to research.

Immersed in it, Chen Zhou is like a person lost in the desert, trying his best to find the oasis in his vague impression.

Now, through the pursuit of inspiration, Chen Zhou has successfully grasped this fleeting light.

The use of distributive deconstruction was once again perfected by him.

The result of Cramell's conjecture is finally approaching the final step.

However, he is only one step away, and he has not yet fully proved the Kramel conjecture.

Finally, after habitually taking a pen and clicking on some scratch paper, Chen Zhou put down the pen.

Perhaps, now is not the time to lift the last veil of Cramell's conjecture......

Chen Zhou stretched his waist and sat for a long time, which made his body very tired.

Glancing at the time, it was 1 p.m. on the 20th of Yanjing time.

That is, it is 1 a.m. in Boston, and today is the last day of the briefing.

He didn't miss his briefing.

Just missed the report of so many big bulls......

"Okay, I originally had the mentality of coming to learn, but I ended up immersed in my own research......" Chen Zhou was a little speechless.

He didn't know if Dean Sun would feel sorry for the travel expenses this time......

Getting up and walking into the bathroom, Chen Zhou took a shower.

Seeing himself in the mirror, he couldn't help but shake his head: "Why do you have such big bags under your eyes? How can this work? Today's report meeting, you must perfectly show your handsome temperament!"

So Chen Zhou decided to have a good rest in the morning, since he missed it, it was not bad for the morning......

After taking a bath, Chen Zhou, who was lying on the bed, unexpectedly heard the voice of protest in his five internal organs temple.

I had to get up again and walk over to the food brought by the waiter.

That's right, it was food delivered in the evening, and he hadn't eaten it yet.

After taking a bite, Chen Zhou immediately spit it out again.

This thing is already cold and hard, how can you eat it?

There's no way, if you don't eat well, you will definitely not sleep well.

This is the philosophy that Yang Yiyi tells him every time he eats ice cream.

Chen Zhou thinks it makes sense!

So, Chen Zhou went to the front desk with a plate to see if he could change some hot ones.

No matter how bad it is, it's okay to heat it up.

The hotel arranged by MIT is not bad, at least the foreign lady at the front desk is very good when she smiles.

After politely inquiring about Chen Zhou's needs, the young lady couldn't help but smile kindly.

"Please wait. ”

Chen Zhou saw the young lady take the dinner plate away, he frowned slightly, this person shouldn't bring it back to me, right?

Retracting his thoughts, Chen Zhou couldn't help but laugh dumbly, what kind of mess was he thinking?

While waiting, Chen Zhou looked at the hotel's building.

The style is modernist, at least from Chen Zhou's aesthetics, there is nothing special about it.

But it's a 4 star hotel......

As his gaze shifted, Chen Zhou couldn't help but focus his gaze on the clock hanging in the hotel lobby.

The only thing that is a little different from the style here is a classical wall clock.

Looking at the moving second hand, Chen Zhou was stunned.

Immediately, the corners of his mouth hooked up a curvature, and he, who had been catching up with the footsteps of the earth's movement, did not expect to find the "key" of the last step from the clock in front of him.

Ignoring the young lady at the front desk who had not yet appeared, Chen Zhou trotted all the way back to the room.

By the time the young lady at the front desk came back, Chen Zhou's figure had already disappeared.

Looking at the newly baked delicious food in her hand, the young lady at the front desk couldn't bear to waste it, so she had to take it back again......