The train driver in the courtyard

Today is the fifth day since Li Aiguo arrived at Factory 221.

There was still no news from the airport, so Li Aiguo could only continue to wait.

In the early morning, the dawn had just broken through the sky.

Zhou Xiaomeng carried a bottle of hot water and walked in briskly, opening the curtain door of the tent.

This girl often came to the tent to play these days, using the excuse of wanting to visit and have food, and Li Aiguo was too embarrassed to refuse.

Besides, it would be great if someone could bring us hot water, Li Aiguo.

The hot water poured into the basin with a "splash". Li Aiguo added some cold water and began to wash his face with a "huffing and puffing" sound.

After washing, he took the towel from Zhou Xiaomeng and wiped it casually.

"Comrade Zhou Xiaomeng, next time you come, remember to bring a can of milk powder."

"Why?" Zhou Xiaomeng felt like she was being blackmailed.

Li Aiguo smiled and pointed at Chichi in Zhou Xiaomeng's arms, explaining, "This little guy is a panda. In the Beijing Zoo, you have to spend at least 20 cents to take a look at it from afar. Now it's in your arms. Is a can of milk powder too much?"

"Ang" Chichi raised his little head proudly when he heard this.

Zhou Xiaomeng didn't know whether to laugh or cry. This man didn't have the authority of a superior at all. Instead, he made people feel like they wanted to be friends.

"That's no big deal. I'll just watch her and not hug her." Zhou Xiaomeng put Chichi on the bed and squatted beside her.

Li Aiguo: "."

Eat: “.”

The man and the bear looked at each other, and saw a hint of shock in each other's eyes.

How come this woman didn't fall for it?
As they were playing, a voice was heard from outside.

"Aiguo, are you there?"

Before Li Aiguo could respond, the curtain door was opened.

A strange comrade rushed in.

"Who are you?" Li Aiguo was surprised.

"Commissioner Li, I'm Liu Xian, the leader of the third computing group in the first department. I'm here because we encountered some difficulties in our calculations. Professor Deng asked me to invite you to take a look."

Upon hearing this, Li Aiguo put on his cotton jacket without hesitation and prepared to go to the same room with Liu Xian.

Just as he reached the door, he stopped again and turned his head to look at
"Eh? Where is the person?"

In the blink of an eye, Zhou Xiaomeng, who was just beside her, disappeared, and Chichi disappeared with her.

"This girl must have taken Chichi out to play." Li Aiguo didn't care, turned around and followed Liu Xian away.

Watching the two people's backs disappear on the road in the distance, Zhou Xiaomeng patted her chest nervously: "Why is Team Leader Liu here? I was scared to death. I was almost seen just now."

Liu Xian is the leader of Group 3 and Zhou Xiaomeng's superior.

"But Liu Xian is always serious. If you make a small mistake, he will scold you. What happened today?"

Zhou Xiaomeng was even more confused when she saw Liu Xian's unusually respectful attitude towards Li Aiguo.

This man seems to be a mystery.

Li Aiguo came to a computer room. Professor Zhou and a group of researchers had been waiting for him for a while and came to greet him immediately.

"Aiguo, come and check if there is any error in this calculation process?"

Li Aiguo took a pile of draft papers, looked at them for a while, raised his head and asked: "Has your research progressed to the 'tile' stage?"

Domestic mushroom cultivation uses the extremely difficult implosion method.

The key to realizing the "implosion" solution lies in whether a converged synchronous waveform can be obtained.

The design of the detonating element (commonly known as the "tile") is extremely important.

Professor Zhou’s lab aims to provide a theoretical calculation basis for the spherical structure of the giant mushroom.

Professor Zhou slapped his thigh suddenly and said: "I knew that Comrade Aiguo was an expert. It only took a short time for him to see it clearly."

Professor Qin explained, "According to the information provided by the Russians, the big mushroom requires 36 tiles, but we simulated the calculations using a calculator and found that 36 tiles simply cannot form that specific spherical shape."

In the past, a room would definitely check the results several times, and then try every means to find out where they were "wrong", and would never question the data provided by Big Brother.

However, after the theoretical calculations a while ago, the leaders and researchers in the room now have doubts about Big Brother's data.

After Li Aiguo figured out what was going on, he pondered for a moment and said, "Don't blindly believe in authority, and don't underestimate yourself. We have calculated and obtained the result, so we should stick to our own opinion."

"But, we have no way to confirm that there is no problem with our calculation process." Professor Zhou was a little embarrassed.

Li Aiguo looked at Professor Qin and said, "Old Qin, I remember that you are an expert in topology. Can you take a look and see if this method can be used to prove it?"

As he spoke, Li Aiguo turned around and drew a spherical shape on the blackboard. Then he quickly picked up the chalk and outlined a series of complex lines and symbols on the shape.

"We first constructed a topological model in three-dimensional space, taking the center of the sphere as the origin and establishing a Cartesian coordinate system. Starting from the structural concept of this big mushroom, each tile was abstracted into a topological unit with a specific geometric shape and spatial position."

As Li Aiguo spoke, he marked symbols of various topological properties in different areas. "By analyzing the boundaries of these topological units, we can use homology theory to study the continuous deformation relationship between them."

Professor Qin didn't care at first.

Topology is the cutting edge of mathematics these days. Anyone who knows mathematics will talk about topology, but few people can really master it. However, as the content on the blackboard gradually increased, Professor Qin's mouth gradually became wider.

The knowledge written by Li Aiguo has surpassed most experts in topology.

And also have unique insights.

After reading to the end, Professor Qin could not help but say: "If we can find that these homology classes cannot form a coherent, closed topological structure that meets the requirements of a specific sphere, it is enough to prove that the Russians' data is wrong."

Li Aiguo nodded: "Not only that, we can also assume that the way the edge of each tile is connected to the edge of the adjacent tile corresponds to a homotopy equivalence class. In this way, we can calculate how many tiles are needed."

"Yes, yes, that's how it came about. That's what I thought too." Professor Qin was as excited as a child at this moment.

The researchers nearby were stunned when they saw this scene.

Although they couldn't understand the knowledge on the blackboard, they knew from Professor Qin's expression that Commissioner Li was also a great mathematician?

Professor Zhou breathed a sigh of relief: "Lao Qin, this job is handed over to you. You will cooperate with Commissioner Li to complete the demonstration and calculation work."

Li Aiguo: "."

Good guy, on a whim, he actually found himself a job.

However, Li Aiguo had no intention of shirking the responsibility. After all, this was a big mushroom that concerned the safety of more than one billion people in China.

Theoretical research is complex in itself, and the demonstration and calculation process is extremely cumbersome.

Even though Li Aiguo was a time traveler and had a general idea in his mind and the assistance of a system, it was still not easy to complete this arduous task.

Fortunately, Professor Zhou carefully selected seven or eight researchers and professors who were proficient in topology and prepared to form a task force to work together to overcome this difficulty.

When Zhou Xiaomeng was notified, Li Aiguo had already returned to the tent.

She handed Chichi to Li Aiguo, smoothed her hair, and said solemnly: "Comrade Aiguo, I have received a notice to complete a glorious and arduous task. Although the content of the task is not clear yet, it is said that a great mathematician has been sent from above, and this task is definitely related to the success or failure of the entire project."

She patted her chest and said, "I am the assistant of the great mathematician."

Her smug look is like saying, "I'm great, come and praise me."

Li Aiguo rubbed his lips and gave Zhou Xiaomeng a thumbs up: "Congratulations, Comrade Zhou Xiaomeng, you have just arrived at Factory 221 and you can participate in the battle. I wish you success."

Zhou Xiaomeng felt so sweet after receiving the praise that she walked out of the tent happily and headed towards a room.

"I have also made some achievements now, and the distance between me and Commissioner Li has narrowed a little bit."

Zhou Xiaomeng felt that the sunshine today was particularly bright.

In the afternoon, Zhou Xiaomeng successfully passed Professor Qin’s “interview” and officially joined the project team as a backup computer.

Although she was only a backup computer and was not qualified to participate in core discussions and could only stand at the back of the conference room, Zhou Xiaomeng was still very excited.

She is the youngest among all the team members.

"Everyone, please be quiet. Our discussion will begin soon."

Professor Qin walked into the conference room with the materials, scanned the crowd, and finally landed on Zhou Xiaomeng: "Comrade Zhou Xiaomeng, your blackboard writing is good, come up and write these contents on the blackboard."

"Yes!" Zhou Xiaomeng answered crisply.

She became even more excited.

This is writing on the blackboard in front of so many great professors.

If Li Aiguo knew about this, he would definitely praise her for her progress.

Zhou Xiaomeng took cheerful steps, picked up the chalk, and started writing on the blackboard.

The content on the blackboard was densely packed, and she couldn't understand many of the professional terms, but it was not an easy task to ensure that there were no mistakes in the writing.

When Zhou Xiaomeng finished writing on an entire blackboard, her forehead was covered with sweat and she was panting from exhaustion.

Just as she was about to step down, a familiar figure appeared at the door of the conference room.

"It's Li Aiguo. What's he doing here? Is he checking the confidentiality measures? Yes, that must be it."

'But this is good, because it allows him to see that I wrote the blackboard.'

Zhou Xiaomeng couldn't help but slow down her pace as she thought about this.

At this moment, Professor Qin came up to him enthusiastically and took Li Aiguo's arm: "Aiguo, you are here. The meeting is about to start. I am waiting for you."

As he spoke, Professor Qin handed the pointer to Li Aiguo.

Zhou Xiaomeng was so shocked that her eyes could hardly close.

"Li Aiguo is in charge of confidentiality work. Although he is a good person, does he know what topology is?"

'Hey, how come he really took over the teaching position?'

"It's over, it's over, he's going to be embarrassed."

"Zhou Xiaomeng, think of a solution quickly."

At this moment, Li Aiguo had already tightly grasped the teaching stick and turned to look at the blackboard: "Comrades, now I will explain the specific idea of ​​using topology to prove the number of tiles."

In an instant, Zhou Xiaomeng only heard a loud "bang" in her ears.

He... He is actually the great mathematician specially invited by the breakthrough team? !
(End of this chapter)