After chatting with the president of the largest Internet company in China for a while, and after initially finalizing some cooperation in the field of artificial intelligence and aerospace, Xu Chuan sent the legendary little brother out of the country.

For the Penguin Group, the impression of the vast majority of people in China is basically the two major parts of communication + games.

If you are a gamer, you may have to add copycat master + krypton gold to become stronger, and playing Tencent's games is either charging money or on the way to charging money.

Coupled with the "micro" innovation and the complaints of strange parents, this company, which is actually very low-key in the circle, is always on the cusp.

However, compared to another Malaysian president, this pony is indeed much more low-key, and even the company with penguins is also relatively low-key.

On the one hand, it has something to do with this person's character, and on the other hand, it may have been educated by the tower before.

But these things aside, the Penguin Group does have what Xu Chuan needs in its hands.

At least in the area of artificial intelligence, a huge amount of Internet data + a large number of programmers will be of great help to what he will do next.

There is probably no other company in China that is more suitable than Penguin.

The day after the end of the bidding conference, Xu Chuan contacted representatives of aerospace science and industry and found the R&D personnel who demonstrated the 'satellite grabbing' technology at the meeting.

The developer of this technology is a middle-aged professor named Ji Shi.

In the café downstairs of the hotel, Xu Chuan saw him in person, shook hands warmly with a smile and said hello: "Professor Ji, hello." ”

Ji Shi had a smile on his face, held Xu Chuan's hand with both hands and shook it enthusiastically: "I have heard of Academician Xu's name for a long time, and today I finally have the opportunity to meet him, he is as young and promising as rumored." ”

Xu Chuan said with a smile: "Professor Ji is too famous, let's sit down first, let's sit and talk, I hope that inviting you over this time will not disturb your itinerary." ”

"No, no, Academician Xu, where is this." Ji Shi sat down with a smile on his face, his butt stained with half of the chair.

For him, the academician-level boss is already a ceiling-level figure, not to mention the top scholar in front of him.

The name Xu Chuan has long been familiar in his mind, and he peeked at it several times at the bidding meeting yesterday, but he didn't expect to receive an invitation from this person today.

Xu Chuan smiled and said, "What to drink?" ”

Ji Shi: "Just have a glass of boiled water." ”

Xu Chuan smiled and said, "Don't be so polite, I can still ask for a cup of coffee." ”

Ji Shi said a little embarrassedly: "That, Academician Xu, I'm allergic to coffee and can't drink coffee."

The corners of Xu Chuan's mouth twitched, a little unexpectedly, and said embarrassedly: "Ahem, I'm sorry, I didn't expect this." ”

"It's okay, it's okay, just bring me a glass of boiled water, I also drink bottled water at the institute." Ji Shi quickly shook his head and said with a smile.

"Okay, waiter, trouble with a glass of water and a cup of green tea."

Xu Chuan shouted, asked the waiter to prepare for a while, looked at Ji Shi who was sitting opposite, and continued with a smile: "I take the liberty to disturb Professor Ji, mainly because I want to ask for advice on something." ”

Ji Shi nodded as quickly as a chicken pecking rice, "Academician Xu, may I ask." ”

"That's right, yesterday at the bidding meeting, I saw the 'satellite grabbing' technology you reported on stage, and I am a little interested in this, can you please ask Professor Ji to talk to me about this aspect?"

Ji Shi nodded and said, "Of course it's no problem." ”

After pondering for a while and organizing the language, he continued: "Regarding satellite grasping technology, it refers to the technology that the satellite moves to the space orbit where the target satellite is located under the ground auxiliary guidance and autonomous guidance, and then slowly approaches the target spacecraft, and finally docks or drags the target within the given capture tolerance. ”

"Including the assembly and docking of the space station, the transportation of materials in aerospace engineering, and some of them are related to this technology."

"Compared with foreign countries, domestic rendezvous and docking technology has just started, and the environmental particularity, complexity and high cost of space rendezvous and docking technology make the research results relatively few."

"However, the importance of this technology is still quite high, whether it is used to clean up the increasing amount of space junk, decommissioned satellites, or orbit refueling, assembly of the International Space Station, space offensive and defensive confrontation and other fields, this technology is needed."

Ji Shi concisely introduced the core and future of satellite grasping technology, Xu Chuan nodded after listening, and asked: "What is the cost of this technology?" Can it be used on meteorites or asteroids? ”

Hearing this question, Ji Shi thought for a while and replied cautiously: "The cost of satellite acquisition technology is not very high, generally speaking, it is to capture another spacecraft through a robotic arm in orbit. ”

"If it's used to capture meteorites or asteroids, I'm afraid it will be more difficult."

"Because meteorites and asteroids are generally much faster than devices like spacecraft and satellites."

"If it is those meteorites and asteroids that are heading towards the earth at high speed, their speeds can even reach tens of thousands of kilometers per hour, and they can reach an exaggerated speed of 100 kilometers per second."

"And if you want to capture such an object, you need the trap to have the ability to counter the kinetic energy generated by this speed. In fact, the current satellite acquisition technology, whether in terms of kinetic energy, or from the robotic arm, materials, etc., does not have such capabilities. ”

"Even the most advanced FREND robotic arm in the United States can only be applied to most non-cooperative target satellites in space, and it is also powerless against high-speed asteroids."

Ji Shi shook his head and explained softly.

He also thought that the young national treasure-level scholar in front of him wanted to do meteorite asteroid interception technology.

But to be honest, it's just too difficult.

Rather than using satellite capture technology to change the trajectory of meteorites and asteroids rushing towards the Earth, it is more realistic to directly use missiles or nuclear bombs to smash and burn them in the atmosphere, or to change their trajectory/turn them into small pieces and so on, so as to reduce the damage to the Earth and the impact power energy.

Xu Chuan thought for a while and said, "What if it's for a meteorite or asteroid in a fixed orbit in the asteroid belt between Mars and Jupiter?" ”

After a slight pause, he continued: "In other words, if I want to pull out the meteorites or asteroids in the asteroid belt and move them to other locations, can this satellite capture technology do it?" ”

Hearing this question, Ji Shi glanced at Xu Chuan in some surprise, not quite understanding what this person meant or what he wanted to do.

But in the literal sense of the word, there is an answer to this question.

After thinking about it, he said: "This has to be based on the volume and speed of the meteorite or asteroid, and if you want to change the trajectory of an object moving in space, or make it stop completely, you must have the corresponding work. ”

"While this can be done in theory, it's a huge strain on the robotic arms typically used by satellite capture technology."

After a pause, Ji Shi made a joke and said, "Instead of doing this, it is better to learn from the wandering earth to change the trajectory of the earth by installing planetary engines on the surface of the planet." ”

"At least compared to Earth, the meteorites and asteroids in the asteroid belt between Mars and Jupiter are countless times lighter in size and mass, and it is not impossible to slowly change their orbits through the Hall propulsion unit or something."

Hearing this, Xu Chuan's eyes suddenly lit up.

That's right, why change the trajectory of an asteroid with satellite grabbing technology? Isn't it enough to think of meteorites and asteroids as a spacecraft and change its direction and motion with small engines?

This method is really good, and the theory is feasible!

After thinking for a while, he looked at Ji Shi with bright eyes, and said with a kind smile on his face: "Professor Ji, are you interested in working in the Xinghai Research Institute?" ”

"In terms of salary, I can guarantee that it is at least twice as much as you are in aerospace science and industry, what are the benefits, I think you should have heard of the reputation of the Xinghai Research Institute, and it will definitely not be bad."

"Huh?"

Hearing Xu Chuan's invitation, Ji Shi was stunned for a moment, his face dazed.

What's going on? Why did you suddenly fast-forward to invite him to the Xinghai Research Institute.

On the other side, Xu Chuan said with a smile: "How about it, Professor Ji, although the reputation and history of the Xinghai Research Institute are not as long as aerospace science and technology, it is still quite good to work there." ”

"I can guarantee that in addition to doubling your salary, you will also be able to have your own independent laboratory, or you can lead a team to continue to complete research and development on satellite acquisition technology and so on."

Hearing Xu Chuan's words, Ji Shi finally came back to his senses.

I have to say that Xu Chuan's condition is still very tempting for him.

He has naturally heard of the status of the Xinghai Research Institute in the domestic academic community, although the establishment of this scientific research institution is not very long, but it is imitated by the Princeton Institute for Advanced Study in the United States, which is absolutely unique in the domestic academic community.

As for the assessment and evaluation of scientific researchers within the Xinghai Research Institute, these are also completely different from those of the domestic academic community.

In addition, the salary and benefits of the Xinghai Research Institute can be said to be the top in China, even if it is put in the scope of the world, it can be regarded as very good.

The salary is doubled, the project is as usual, and there is its own independent laboratory.

I have to say that this condition is really tempting for him.

The only thing that made him think about it was whether the aerospace science and industry side would agree to his resignation, and some troubles that would arise from moving from the capital to Jinling to work.

After thinking for a while, Ji Shi looked up at Xu Chuan and said movingly: "If this is the condition, I am very willing to work in the Xinghai Research Institute, but regarding the transfer of work, it may be a little troublesome for me, and it may take some time." ”

Hearing this question, Xu Chuan reacted.

Aerospace science and industry is not only a state-owned enterprise, but also under the jurisdiction of the military, and its nature is quite special.

Employees like them, especially scientific researchers, have signed a confidentiality agreement or something like that when they join the company, if they want to leave, they can, but there are great considerations in terms of follow-up work and difficulty.

Smiling, Xu Chuan said: "There is nothing wrong with this, I will just let the Xinghai Research Institute say hello to the aerospace science and industry after I go back." ”

He wants a person, and he is not a person with core technologies such as launch vehicles and space missiles, so there will be no big problem, and the face of aerospace science and industry will still be given.

Hearing this, Ji Shi swallowed his saliva and said, "Then I'll prepare when I go back?" ”

Xu Chuan nodded and said with a smile: "Yes, when the time comes, you can just come to the Xinghai Research Institute to report, and I will say hello to the personnel side." ”

Ji Shi took a deep breath and said excitedly: "Trouble Academician Xu." ”

Recruited a talent from aerospace science and industry, although this was just an unexpected gain, Xu Chuan's mood was still quite good, so much so that Beihang invited him to come over to do a report meeting, and he agreed.

This refreshing answer made the leader of Beihang who invited him stunned for a moment, and then jumped three feet high in excitement, hung up the phone and quickly ran to inform the others.

The next day, standing on the stage in the auditorium of Beihang University, Xu Chuan brought a report on 'condensed matter physics' and 'the theory of the unified framework of strongly correlated electronic systems' to the students of Beihang University with a clear and steady voice.

Matter exhibits symmetry in certain states, at which point the symmetry of the relevant laws of physics is broken. A common example is crystalline matter, whose complete translational symmetry and rotational symmetry are broken. ”

"In crystalline solids, for example, these Goldstone bosons are called phonon-one-lattice vibrations of the quantized form. There are also magnons, quasi-electrons, excitons, polarons, etc., which are excited at arbitrarily low energies, i.e., Landau's meta-excitation. ”

"Symmetry breaking is a common phenomenon in condensed matter physics, and through the 'Strongly Correlated Electronic System Unified Framework Theory', we can understand the basis of changes such as symmetry breaking, high-temperature superconductivity, giant magnetoresistance, metal-insulator transition, and so on."

"Below I will focus on some of the application aspects of the 'Strongly Correlated Electronic System Unified Framework Theory'"

The audience was dark and pressing, crowded with people, not only were the seats not vacant, but even the corridors and aisles were full of people.

After hearing the report on "condensed matter physics" and "the unified framework theory of strongly correlated electronic systems", not only the students of Beihang University, but also researchers from Shuimu University and Peking University, and even some nearby materials research institutes, came to the report.

The large auditorium, which can accommodate thousands of people, will be squeezed into nearly 10,000 people.

For researchers from Beihang University, other universities such as Shuimu and Peking University, and even the nearby Institute of Materials, Xu Chuan personally explained the application of the 'Great Unified Framework Theory of Strongly Associated Electronic Systems', which can be described as a gluttonous feast.

Aside from those who were just there to watch the excitement of other departments, most of the students sitting in the auditorium listened quite carefully, and their notebooks were already full of various key notes.

For Xu Chuan, spreading his thoughts, theories and achievements to other students and researchers is also something he is happy to do.

After all, the development of a discipline, the development of a country, and the development of a civilization are far from enough to rely on him alone.

The core of condensed matter physics, the "large unified framework theory of strongly correlated electronic systems", is of great significance for the development of materials physics.

Especially for the students of Beihang University, they themselves have a large number of students and professors engaged in the field of aerospace, and for aerospace technology, the material itself is undoubtedly the most important key.

This report, not to mention how many achievements it will bring to Beihang University and other students, but at least it can make these students, researchers, and even professors go easier and farther on the road of condensed matter physics and materials physics.

For these audience scholars, the only thing that can respond to this report is the warmest applause.

Therefore, when the last sentence on the lecture platform fell, the entire auditorium was instantly filled with a tidal wave of applause, which lasted for a long time.

(End of chapter)