The new shelters can no longer be built underground, and since there’s no need for air defense anymore, the plan to dig deeper has naturally been abandoned.

Nowadays, the new shelters adopt the same dome design as the research base of Chen Xin. After all, it’s rare for meteors to fall anymore, and the glass dome poses no safety risks.

Moreover, the new shelters with this architectural style are more comfortable to live in compared to the traditional rib-like structures, and they also allow for a larger internal space.

Apart from the shelters themselves, related facilities such as greenhouse farms, factories, power plants, and water plants are also under construction.

In a short time, although the entire city is still in ruins, it has nevertheless regained its vitality.

Chen Xin originally wanted to stay to help with disaster reconstruction. After all, with the system at his disposal, Chen Xin could greatly accelerate the speed of reconstruction in many areas.

However, this idea of Chen Xin fell through.

As the railway line was urgently repaired and opened, a nuclear train entered the disaster area. While it was responsible for relocating the evacuees to other places, it also brought orders for Chen Xin to return.

"What’s going on? Why am I being called back so suddenly?" On the train, Chen Xin asked an officer who came to deliver the orders.

This also puzzled Chen Xin. Even if the higher-ups had some requests, they could send a government official or contact him through communication devices. Why specifically send an officer to deliver the message and particularly arrange for him to return by train?

"This involves national secrets." The officer glanced at Qin Lan, who was sitting beside Chen Xin, and did not explain the reason.

Qin Lan was returning with Chen Xin. Her Titan was now also loaded onto the train to be transported back together, so naturally, she accompanied Chen Xin.

However, after hearing the officer say this, Qin Lan immediately stood up proactively, said to Chen Xin, "You two have a talk," and then walked out voluntarily.

After Qin Lan left, the officer placed the briefcase that had been handcuffed to his wrist in front of Chen Xin, opened it, and took out a document to hand to Chen Xin.

"This was brought back by comrades who went to aid Lucia." The officer’s expression was very serious, and after handing the document to Chen Xin, he finally spoke: "The country has urgently organized experts to analyze this, but there are almost no clues, so the leadership thought of you, Academician Chen, hoping you could help with this matter."

Chen Xin listened to the officer’s seriousness, took the document, and began to read it carefully. But just after turning the first page, he was surprised, looked up at the officer: "Are you joking with me?"

"Certainly not." The officer still maintained a serious and earnest expression, nodding affirmatively: "When we first got the information, we also thought it was a colossal joke, but Lucia repeatedly assured the authenticity of the data.

Moreover, the comrades who went there also saw the original documents; they are indeed old materials from the Suyia era. Unless they started faking it during the Suyia era, the authenticity of the data shouldn’t be doubted."

"This is simply the most absurd thing I have ever heard!" Chen Xin threw the documents onto the table, with disbelief written all over his face.

But after rubbing his nose, he picked up the documents again and started leafing through them carefully, page by page.

Chen Xin read slowly, and the officer did not rush him, waiting patiently until he finished and even skimmed through again, only then did he ask: "Academician Chen, what do you think about this matter?"

"What can I think?" Chen Xin gave a wry smile, somewhat amused yet helpless: "Unless I can see it on site, with just this document alone, I’ll just think you’re joking, or it’s a setting for some science fiction game."

After saying that, Chen Xin flipped through the documents on the table and revealed the picture that made him both laugh and cry.

It was a scanned copy of a somewhat blurry black-and-white photo, but what was captured in the photo was relatively clear.

Yet it was precisely this clarity that made Chen Xin think the possibility of this thing actually existing was quite low.

But the officer’s serious demeanor and his mentioning of Lucia’s guarantees made Chen Xin somewhat skeptical yet curious about its existence.

Mentioning Suyia, everyone would remember the era when it competed with the Federation, and the most representative aspect was that series of mind-boggling Soviet-era tech marvels.

Whether it was the Caspian Monster Ground Effect Vehicle, the Mig-105 Space Fighter, the DON-2N Radar Array, the SVL High-speed Train, or the K7 Heavy Bomber...

or the seemingly inconspicuous but humiliating to the Federation Truman Bus Card, all were glories created by that former red giant bear.

After the disintegration of Suyia, many former secret documents leaked out, mentioning several brainstorming technology projects conceived by former Suyia’s high-level leadership during the Cold War with the Federation.

These projects were either whimsical or too avant-garde, though abandoned for various reasons, some were actually feasible, merely shelved due to high costs or lack of practicality.

For instance, the ball-shaped tank, LPL Flying Submarine, 1K17 Laser Tank all had considerable practical value and were actually feasible, but abandoned for various reasons. When the Flame Country sent people to Lucia this time, these precious materials were obtained.

But amidst these documents were also things like the one placed in front of Chen Xin, appearing overly fanciful and unrealistic at first glance.

For example, passenger-carrying rockets, gigantic hydrofoil cruise ships meant to cross the Atlantic Ocean...

And the thing exactly placed right in front of Chen Xin.

Chen Xin scratched his forehead and asked the officer: "Where is this thing now? Did they really build it?"

"The thing is in Siberia, back then Suyia built two prototypes, and conducted several experiments on them in Siberia, after the final designing they built one finished product, and all three are currently in the experimental base built by Suyia in Siberia." The officer explained to Chen Xin, though these details were already in the document, since Chen Xin asked, he had to answer.

Chen Xin nodded, then asked the officer: "So the real mission of this train, besides transferring evacuees, is to take me to Siberia to check on this thing?"

"Yes, we will first transfer the evacuees to nearby cities for settlement, then follow the railway northward to send you to Siberia." The officer nodded affirmatively.