“......."

Return to the interior of the Steel Vault.

After a simple breakfast, Zhao Chen began to prepare for the expansion of the shelter.

Braving the ultra-low temperatures.

Didn't you run out to shovel snow so that you could open up the second basement floor of the shelter today?

"Determine the additional attribute – capacity expansion. "

[Ding, Steel Shelter, Additional Capacity Expansion Attribute, Survival Point -3000]

[Remaining survival points: 240]

【.......】

Zhao Chen's survival point that he had finally accumulated.

In an instant, it was deducted seventy-seven eighty-eight, and it almost fell to the lowest value in history!

The next second.

The entire steel vault began to shake.

As if some great change was about to take place, all the members were aware of the change, and those who didn't know thought it was an earthquake.

This change.

It lasted about five minutes or so.

"What's going on?!"

"Won't there be another earthquake, this time the shaking is so bad?913!"

"Obviously, the last meteorite shock wave comparable to a six-magnitude earthquake didn't have much impact, could there be a seven- or eight-magnitude earthquake outside?!"

"Woohoo!"

“......."

Such a violent tremor made the unsuspecting members of the shelter suddenly vigilant.

The magnitude of the shock.

Even.

It's even worse than the upgrade from a rock shelter to a steel shelter.

After all, the upgrade had only changed the environment of the basement level, replacing the rock structure with a five-meter-thick piece of steel.

Now the second basement floor has been added.

The steel structure also expanded, covering two floors.

As a result, it is expected that there will be a vibration that will be more than the previous upgrade.

"Don't be nervous, it's just normal. "

"Sir, why does your shelter shake every now and then, I'm really afraid that one day it will collapse and bury us here alive on the spot. "

"You're worrying too much. Zhao Chen waved his hand and said, "This situation is not possible at all (ajfc)." "

On defensive capabilities.

Zhao Chen didn't think that the steel shelter he built would be weaker than the national shelter in Hangcheng.

It may not be as good as the National Shelter in the Nine Cities of the Dragon Country.

After all, in every big city, hundreds of thousands of troops are stationed.

There are also many high-tech talents, and with their concerted efforts, they can build an impregnable super shelter in a month, which is the power of the state machine!

"Okay, I'll go out and take a look at the situation, and you guys will wait here for a while. "

Zhao Chen stood up from his position.

Putting on a thick winter coat, I was ready to walk in the direction of the large garage.

The central air-conditioning does not lead to the large garage, so you still need to be prepared to keep warm when you want to go to this shelter building.

"Stump, Tread, Tread—"

Straight through a door, Zhao Chen came to the garage.

Looking up ahead, in the corner, I don't know when there was an elevator.

This is an add-on attribute – a bonus to capacity expansion.

You can go from the first basement to the second basement directly, connect the two territories, and directly double the volume of the entire steel shelter!

"Drip-"

A slight tap of the finger on the elevator.

Soon, the iron door slowly opened.

Zhao Chen walked into the elevator and came to the territory on the second floor of the basement.

It is still a wide space of 50 meters long, 40 meters wide, and 4 meters high, and the system also comes with ten light bulbs this time, so as not to plunge the second underground floor into a state of darkness. (If you read a violent novel, go to Feilu Novel Network!)

Of course.

This is true for power systems that are on the verge of limits.

It is undoubtedly another challenge.

"Empty patches. "

"It's like building this place like a basement. "

"I'm afraid, it will take a lot of effort and survival points. "

“......."

Looking at the empty front, Zhao Chen thought silently.

However, as long as you have enough space, you will be able to redirect the development of the Steel Refuge on the right track.

A brief inspection of his territory.

Since there is no heating here.

So the temperature was still a little cold, and Zhao Chen didn't stay for too long, and soon took the elevator back to the basement floor and walked into the main living room.

"What's going on, Brother Chen?"

"Our shelter has just undergone an expansion. "

"Expansion?"

"Well, on the second basement floor, the area is about the same size as ours. "

“???"

“???"

Ying Mengyao and Qiao Qian slowly put a question mark.

Expanding the space by 8,000 cubic meters is no small project, and it is still in the shelter.

There is no construction team of several hundred people.

After a few more months of excavation, it would have been impossible to complete the project.

Because, this is not simply to dig a space, you also have to take into account various factors, so as not to collapse directly after digging.

"Alright, it's almost time for a meeting. "

"There is something about the future development of our shelter. "

"Since I'm only a novice, the first time I built it, it was full of flaws, and I needed the two of you to help me fill in the gaps. "

"Survival buildings, defense buildings, are the most important things. "

“......."

Sitting on the soft sofa, Zhao Chen said seriously.

The capacity of the Steel Vault has been expanded to accommodate more buildings, and since the horror rat plague is still in sight, the construction of defensive buildings is also urgent.

Survival points are needed everywhere.

You have to get a construction plan as soon as possible, and then start a drastic transformation of the steel shelter!

PS: New books are on the shelves, ask for a wave of automatic subscriptions.......。

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