Giving the technology of manufacturing isotope temperature difference batteries to the state is not something difficult for Chen Xin to accept.

Of course, he knows how beneficial isotope temperature difference batteries are for the country and what role they can play in post-disaster reconstruction.

Imagine that a small isotope thermoelectric battery can achieve a power output of hundreds of kilowatts, and if the technology is applied to a small nuclear reactor to increase the output power of a small nuclear reactor, what an amazing effect it would have.

It can be said that if the technology of manufacturing isotope temperature difference batteries can be thoroughly understood and extended as a whole, it is enough to change the existing energy application status of Yanguo, change the entire national energy structure system, and even affect the entire national development strategy and national situation!

Even before a disaster, this is a core strategic technology that can change a country.

Although Chen Xin is not the kind of person who can dedicate everything he has to the country for free, he will not say that he holds such technology in his hands and still wants to hide it in his own hands, and is unwilling to help the country for his own selfish interests.

It's just that the problem is that although the isotope temperature difference battery on Chen's novice hand is made by himself, it is something that can only be made by relying on the system, and it is not something that he can understand the technical principles and be able to explain clearly, explain clearly, or be able to reproduce it without the system.

In other words, Chen Xin can make a finished product, and he can also improve it to make it something more powerful, but he can't tell him how it is made and what principle it is based on.

He was able to sell only finished isotope temperature difference batteries to the state, but could not provide the relevant technology.

This is the fundamental reason for his hesitation and hesitation, because he does not provide technology, only provides finished products, which from some perspectives, Chen Xin is still cherishing himself and unwilling to provide technology.

Maybe you can provide your own drawings? Chen Xin scratched his head, but he had a new idea.

His workbench can record the drawings of the items he has made, so he can record the drawings of the isotope temperature difference battery, and provide the finished products and drawings when the time comes, so that those scientists can use them for reverse research, which can save a lot of work.

As for the related technology, this one is really gone, and we can only count on those scientists to do reverse cracking.

After figuring out this matter, Chen Xin's whole person was also much more relaxed, and sensing the change in his mood, Zhang Chengguang and the other two astronauts couldn't help but feel a little more expectation and hope in their hearts.

Although Chen Xin did not agree or say anything, Zhang Chengguang could still see that Chen Xin had already made a decision about his proposal.

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Driven by Zhang Yao, Chen Xin's car came to the seat of the provincial capital of Hubei Province.

The astronauts' affairs are too important, and in the current environment, they can only contact the provincial government to ensure the security of the important data in the data storage they carry.

For the arrival of the astronauts and the important data they carried, the provincial government of Hubei Province also attached great importance to it after being surprised.

However, the provincial government itself does not have the ability to process these data, so after meeting with the three astronauts, the high-level officials of Hubei Province sent armed police to escort them to the Optics Valley in the three towns.

The three astronauts did not object to the decision of the provincial government.

The provincial government is an administrative agency, so it is naturally impossible to deal with this kind of data related to scientific research, but Optics Valley is different.

It is an important high-tech industrial area in the central region of Yanguo, where more than 40 universities and more than 50 national and high-level scientific research institutes gathered before the disaster, and there is also the largest and most complex underground complex in Asia, the Optics Valley Underground City.

As for the Optics Valley dungeon, Chen Xin only learned about this dungeon known as the world's largest single underground structure from TV shows, and he didn't really come here.

However, when Chen Xin drove to this place under the escort of two armed police armored vehicles, he was obviously shocked by this huge underground structure.

"Why did you build such a big dungeon here in the first place? Is it for disaster prevention and preparedness? Driving slowly into this huge underground city, Chen Xin was quite surprised and asked the staff sent by the provincial government of Hubei Province about the purpose of the original construction here.

The Optics Valley Dungeon is a huge disk-shaped building, and just by looking through the entrance, you can feel the enormity of its internal space, which is almost as exaggerated as the terminal building of a large airport.

This also made Chen Xin very curious, why did the high-rise leaders of the three towns and Hubei Province build such an exaggerated building in the center of the city, especially underground.

"It's so big here, mainly because of the actual use needs." Of course, the staff of the provincial government of Hubei Province have a deep understanding of this huge underground city, after all, it was not only the largest underground complex in Asia in the past, but also the largest underground shelter in Hubei Province, or a veritable underground city.

"Usage?" Chen Xin became more and more curious, what kind of use needs need to build such a large underground building: "Is this a subway station?" But the subway station doesn't need to be built so big, right? ”

Regarding Chen Xin's speculation, the staff smiled and explained: "Five years ago, the Optics Valley Underground City was still the most congested intersection in the three towns, and the city government hoped to improve the traffic at that time, so as to speed up the development of the Optics Valley, so it planned such an underground complex, which was used as an underground transportation hub."

Here, three subway lines and two highways from the three towns converge here, and 80,000 people per hour need to pass during peak hours. ”

After listening to the introduction of the staff, Chen Xin realized that this huge underground city was not an underground shopping mall or a simple underground building as he originally thought, but a transportation hub or a huge subway station.

Chen Xin believes that when it was first built, those engineering designers must have spent countless efforts here to build it to meet all the needs of use, and at the same time, it is spacious, bright and beautiful.

Only now, this once beautiful underground complex has been transformed into a huge underground city.

The roof of the entire complex has been remodeled and reinforced, and the top of the glass structure, which would have allowed sunlight to penetrate the interior of the complex, has been visibly sealed to protect and insulate the complex.

And when Chen Xin looked up at a subway line running through the complex, a train just pulled into the platform.

"The transportation lines here are still running, and the subway is not as dense as it used to be, but it is still running, but many of the stations along the subway line have also been converted into underground shelters, and their supplies depend on the subway." Seeing Chen Xin looking at the train, the staff also hurriedly introduced.

Chen Xin didn't feel strange about this, he just asked the staff: "Are scientific research institutions also concentrated here?" ”

"No, the schools and scientific research institutions in Optics Valley are still in their original locations, because they actually have underground bunkers or underground parking lots and civil air defense projects, so the scientific research institutions are basically just abandoning some of the buildings above ground and transferring the research facilities to the underground." The staff seemed to talk about Chen Xinhui's problem, guiding Chen Xin through the road inside the complex, and at the same time introducing the situation here: "Various scientific research institutions and schools have been transferred underground, and the three towns and municipal governments have dug underground passages connected to these scientific research institutions and schools, connecting the entire Optics Valley area, and its core is here."

It can be said that the entire Optics Valley area is a veritable underground city, and where we are now is only the core part of this underground city. The research institute you're going to isn't far from here, and it's only a five-minute walk away. ”

According to the instructions of the staff, Chen Xin turned the car into a tunnel, and the two armed police armored vehicles following them were still close behind.

Such a configuration looks a little scary, but the people on the side of the road see three armored vehicles driving over, but they don't say anything special, as if they have become commonplace.

After driving into the tunnel, Chen Xin continued to ask: "It seems that I didn't see any residents just now, aren't there many survivors here in Optics Valley?" ”

"Before the disaster, there were 400,000 students in the Optics Valley area alone, and the permanent population reached more than 1 million, and there were more than 100,000 students stranded after the disaster, and there were more than 800,000 other survivors, how could there be not many people!" The staff smiled wryly, but he still answered Chen Xin's question: "It's just that the Optics Valley complex is not used to live a large number of people, it is mainly used as a transportation hub and regional center, and the surviving population is mainly distributed in other underground shelters in this area." ”

Such a large underground space has not been transformed into a living space? This made Chen Xin feel very surprised, even the three astronauts in the car were a little puzzled, it stands to reason that such a large underground space as the Optics Valley Complex, if it is transformed into a living space, I dare not say that there is no problem at all to accommodate tens of thousands of people to survive.

After all, according to the introduction of the staff just now, the area of the entire Optics Valley underground complex is almost the size of 32 football fields, and it is not reluctant to live tens of thousands of people.

However, in the face of Chen Xin's question, the staff could only smile bitterly: "The Optics Valley underground complex is mainly used as a transportation hub, although the underground public space is huge, but it is very transparent. ”

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