My Post-Apocalyptic Shelter Levels Up Infinitely!

"Just a biological virus completely penetrated the sky barrier, causing the defense line that humans thought to be indestructible to collapse."

"But judging from the time when humans moved to the New World, the biological virus only struck in the ninth year."

"Now I have a complete viral vector and so much time, biological viruses"

“Nothing to worry about!!”

Somo felt lucky when he thought that he had not been bitten or scratched directly in the two previous encounters with the black dog Mad Cow when he entered this ruins. Google search reading

At the same time, thinking about the other mutated creatures that were still trapped in the core of the ruins, Sumo couldn't help but clenched his fists and pounded the ground, feeling lucky that he had come directly to Ma Fei's refuge before.

These living mutated creatures cannot die so easily.

In the face of biological virus disasters in the future, this is a "treasure" that can be dissected and analyzed in advance!

As long as a complete biological laboratory is established, the corresponding virus template is extracted, and the serum antidote is developed.

Biological viruses, can that still be a problem?

Even if the biological virus mutates to a few levels, it is not impossible for Sumo to believe that nine years later, Sumo has already established a complete prevention and control mechanism, and even goes directly to the "heaven" to turn these creatures running on the ground into idiots.

"Looking at it this way, the most important point of this seventeenth-level core is the sky defense system and the virus biological template."

"As long as we can build a sky dome in the real world, or imitate it, it will be enough to withstand ordinary disasters."

"I have a system that can completely integrate other technologies to completely improve the design concept of the sky."

After solemnly putting away the mayor's manual, which recorded the operation of Liangfang Town, and placing it in a location that did not need to be moved in the storage space, Somo stood up and began to carefully look at the room where treasures might be hidden.

The control system of Tianqiong is in the mayor's room.

Judging from the furniture arrangement on the first floor, this should be the place where Ma Fei usually handles government affairs. He occasionally meets with other people here to discuss matters related to the development of Liangfang Town, so the mayor's manual is placed on the first floor.

But Somo did not let go of any place where information might remain in the mayor's room. Starting from the floor on the first floor, Somo insisted on "scraping the ground three feet away" in every place.

Of course, the harvest was not without success. Among them, Sumo once again found two letters used for material handover and extracted an important piece of information.

The coordinates of Hanwu City and Yangliu City that were traded in Liangfang Town.

"Currently, for some unknown reason, the core of Liangfang Town can manifest ruins in my depression."

"But its real prototype should be at the wasteland coordinates prompted by the system."

"If I can locate the true coordinates of Liangfang Town, and find a way to mark it, I may be able to trace the location of these two cities after I go to the New World."

Similarly, after putting the two letters recording the coordinates back into the storage space and calling Moore to the iron gate from the first to the second floor, the first challenge was finally placed in front of Sumo.

No matter how weak Ma Fei is, he is still a level 17 boss. No matter how crooked Yanguo's technology tree is, he has developed a sky barrier, a good means specifically for avoiding disasters.

If the first floor is the reception room, which seems defenseless, then the thick iron door on the second floor is a necessary step to open the "treasure".

He tried to knock on it, but when he heard the thick sound that did not convey the sound at all, Somo felt a little confused.

This sounding iron door is even more difficult to open than the stone door of the underground shelter. It is expected to be at least ten meters thick. It is a physical method of stacking materials to avoid disasters.

Without qualified instruments, or corresponding attack methods, this door alone can stump countless people.

Using such a simple and crude method to serve as the first line of defense in the shelter, I have to say that this Ma Fei is also an old man.

As for the periphery of the small building, blast and break through.

Thinking like this, Sumo walked out of the first floor and began to carefully look at the main structure of the entire small building.

Four floors, not high, only about twelve meters, which is the height of three shelter cores stacked together.

But this small building has an extremely buggy place

According to the standard of a one-story building, the thickness of the outer wall of this small building should be about ten to fifteen meters, which is within the range that is difficult to demolish even with blasting.

And even if it can be bombed, if there is a punishment of one hundred and eighty days, and it is charged with charging the mayor, it will be a big deal.

"Why don't we try to blast it directly from inside the house?"

Unable to bombard the outside, he walked back into the house and looked at the time currency he had left. Somo quickly eliminated this dangerous idea.

It is impossible to leave.

But if you don’t take it, this trip will be in vain.

The promised computer is gone, so I need to get some other things this time, or learn some other information.

This does not mean entering the treasure mountain in vain and losing blood!

"Is there any good way to break through this iron door directly and enter the second floor in the normal way?"

"Chemical?"

"drill?"

Taking advantage of the fact that there were still twenty hours left, Sumo simply sat in front of the window. After looking at the burning sky for a few times, he began to close his eyes and think about how to break through.

It is not impossible to chemically corrode iron, but the most important raw material is not available at hand.

Drills are even less reliable, and it is more realistic to replace them with fixed-point blasting.

Starting from the thinking of a modern person, facing a pure iron security door that is more than ten meters thick and does not have a key.

Sumo is a little helpless!

Moore on the side also discovered Somo's and the iron door.

For the thinking of the Thunder Bear Warriors, they don't think about how to enter through tricks.

After spitting and rubbing his hands, Moore sat in front of the iron gate and started shoveling with a three-pointed two-edged knife.

It's a pity that every time it is shoveled, except for the sparks of friction, the iron door remains unchanged!

"Moore, stop shoveling. Even if you dig, you can't dig."

"Damn it, I've fallen into a misunderstanding!"

"I can use magic to fight magic!"

The thick iron door seemed impossible to break through with ordinary tools, but with a thought in Sumo's mind, and a flashing high-quality iron pickaxe appeared in his hand, everything seemed to become simpler.

The quality of iron is 3.

The special effect of a sophisticated iron pickaxe is a material with a value below 5. As long as it hits a critical hit, there is a certain chance of producing a shattering special effect.

Once triggered, the surrounding iron blocks will shatter like tofu. As long as the knock is continued, let alone ten meters.

Even if it's fifty or sixty meters, Sumo is confident that he can dig through it today!

"Moore, Moore, you are such a clever little kid!"

After patting Moore on the back and looking at the confused expression on his face, Sumo laughed loudly and went to the wall next to him to try it out first.

Sure enough, the material grade of the wall was judged to be above 5. Even if the special effect was triggered by the iron pickaxe, the wall would not move at all except for the dust falling down.

"It seems that it's impossible to get the bug stuck, so we can only dig it step by step!"

It takes five minutes to knock a pickaxe on the wall, and twenty minutes to knock it on an iron door.

A day's time currency can leave 72 pickaxes on the iron gate.

In order to save money, Sumo simply took out a unit of iron blocks from the storage space and began to knock slowly.

The critical strike of the iron pickaxe has a very obvious light. In addition to the burst of bright light from the pickaxe, the hand holding the pickaxe can also feel a unique power.

Whenever a critical strike was triggered, Somo would raise his hand and hit the iron door with a pickaxe, bringing down an iron block about the size of a human head.

This is a patient job. There is still plenty of time now, so Sumo is not in a hurry. When he is tired, he sits down to rest for a while, drink water and eat dry food.

After resting, it was time to work vigorously again.

"As expected of Lao Gou, a two-meter-thick iron door weighs at least twenty or thirty tons."

"An ordinary residential building cannot bear such a weight. With so many corridors built, looking at the width of the wall outside, there are only nearly ten corridors. You are worthy of being a member of the same community!"

I don’t know what material the main body of the shelter is made of, and the load-bearing capacity is extremely terrifying.

Seeing that it had taken him a day and a half to knock down two doors with a thickness of more than two meters, and another door appeared, Sumo admired and had a basic understanding of level seventeen.

The 2-meter-high floor created by the system provides enough space for playing with flowers.

The height of the first floor is 4m, and the iron gate adopts a corridor-style design. After digging through two tunnels, Somo found that he had only risen half a meter in height.

At this point, not to mention how harsh the upgrade conditions are, the awareness of life-saving alone is worth learning.

This time I went back, not to mention anything else. After I went to the New World, I directly upgraded all the materials of the underground shelter, and the entrance door was also made so thick!

After another two or three hours of tapping, he opened the panel and found that there were only twelve hours left. Somo did not take a break, so he took out the mountain and sea scroll card to regain his strength and continued digging forward.

In ancient times, there was a foolish old man who moved mountains.

Now there is Somo chiseling the door.

Countless pieces of broken iron were dug out, and then Oreo pushed a homemade cart and dumped them in the courtyard.

Doudou, the old lady, saw the same kind of Oreo, and she kept lying next to it and kept talking.

What was an extremely dangerous ruin in the eyes of others turned into a unique labor meeting in Somo's place.

Keep digging, and whenever a critical hit triggers, Soma will swing at the iron gate next to him.

The repetitive mechanical work that lasts for more than ten hours is extremely labor-intensive.

Fortunately, after living in the wasteland for a month, Somo's endurance was no longer what it used to be and he managed to survive.

Boom!

Buzz

Another skillful critical strike hit the side with a pickaxe, but this time, a smile finally appeared on Somo's already gray-black face.

The iron gate finally has a sound!

The sound means that the back is no longer a passage, but an open space, producing an echo!

At this level, it only takes more than an hour of digging before the passage can be dug!

With his goal in mind, Somo felt as if there was a steady flow of power coming from all directions in his body, and his silent brain seemed to be injected with a spring of life.

Half-crouching, the iron pickaxe in Somo's hand suddenly accelerated, and sparks even appeared on the deformed iron block.

Boom!

Boom!

Boom!

With pickaxe after pickaxe, iron filings fell off the iron door and were dug out by Moore with both hands, leaving the maximum space for Somo to dig.

Finding a spot, Somo covered his head and waved wildly.

Finally, with six hours left in the countdown to the ruins, there was a crash.

Door

Collapsed!

Countless amounts of dust were raised at this moment, and as the iron pieces fell to the ground, the dull echoing sound continued to spread.

Despite the countless joys in his heart, Sumo still cautiously rested for half an hour as he looked into the dark room. After making sure that his mental and physical conditions were restored to his prime, he summoned the Tibetan Mastiff Doudou.

"Go inside later, be careful, and if there is danger, get back in time!"

After touching the silly dog's head and looking at its well-behaved appearance, Somo bent slightly and was ready to run away at any time.

There are hundreds of engineering robots on the first floor. If there are the expected attack robots on the second floor, it will give Sumo a hundred courages and he will not dare to use the mysterious side technology to attack the future head-on.

Fortunately, the expected attack did not break out. When Doudou stepped onto the second floor, a strong light suddenly erupted from the ceiling of the second floor, illuminating the entire darkness.

Having been accustomed to darkness for a long time, this sudden light made Somo close his eyes involuntarily.

But just when Somo had just reacted and had no time to retreat, a rich male voice sounded slowly in the shelter.

"Welcome, Future People"

"Welcome to my sanctuary!"

"Come in, since you can pass my first test, you are qualified to know something!"

This male voice seemed to have endless charm. The first moment it sounded, Sumo couldn't help but stop in his tracks.

Humanity?

No, is this Ma Fei?

Is this Ma Fei, the mayor of Liangfang Town?

Out of curiosity, Sumo tried to stick his head out of the iron door. Then, Sumo saw the most shocking scene from the earth to the present:

On the second floor, there are not only the high-end desktop computers that you have been dreaming about, but they are piled in the corner like debris.

There are also transparent pipes with a diameter of one meter, which are densely spread on the ground like blood vessels, transporting water-like energy that has been transformed into a faint blue.

At the end of the line of sight, there is an entire wall made up of small robots that I have seen before.

Unlike the previous construction machinery, these villains do not have anything in their hands. They seem to be in a dormant state, allowing energy to hit them, emitting mysterious phenomena like water ripples.

But all this could not attract Somo's attention.

Because, in the center of the room, there is a large square box, at least 4m*4m in size.

Sumo was no stranger to this thing, and he had seen it in his dream recently, and had coveted it in his dream.

"Very good, vertical missile launcher. I admit, I was really tempted this time!"