Doomsday Bunker Upgrade

In the bedroom, Chen Xin was leaning on the bed and using the CAD drawing software on his laptop to design the door of the shelter.

When the system upgrades items or the shelter, it can be modified according to Chen Xin's ideas, so Chen Xin decided to add some of his own ideas to the door of the shelter.

As the first door of the refuge to resist outside invasion, it is also the strongest defense, the door of the refuge is not just a gate in Chen Xin's vision.

Before the disaster, when everyone in the survival group discussed how to build a doomsday shelter, everyone had put forward many plans for this issue.

The original plan was proposed by the big man who made water purifier equipment. He borrowed from the federal plan to rebuild a shelter with an abandoned missile silo, and proposed to buy an abandoned air raid shelter and then transform it into a small shelter. Let’s all work together. Live in and form a small community.

In this plan, the gate of the shelter is designed as a protective screen door of the same level as the civil air defense project built by the country. The reinforced concrete structure weighing more than three tons is wrapped with steel plates, plus ancillary equipment such as virus filtering and air purification. .

According to the standard, such a gate structure is sufficient to resist the attack of nuclear bomb shock waves, biological and chemical weapons and poisonous gas in wartime, giving people an incomparable sense of security.

It's just that this plan was scrapped when it was first proposed.

Without him, Yan Guo would not sell abandoned civil air defense facilities, especially at this critical moment when the end was approaching.

So later, everyone could only follow the construction plan proposed by Chen Xin, find a hill to dig a hole in the ground, and then bury the specially customized container house to build a shelter.

Of course, the shelter built in this way is not as strong and reliable as the abandoned civil air defense project, but considering that everyone is not facing a terrifying thing like nuclear war, this shelter is enough.

After all, what everyone has to face is the extremely cold low temperature and severe air pollution, which are much easier to deal with than nuclear radiation.

And the door of the shelter was replaced by the three-proof door that everyone can buy, not the protective screen door as expected.

Originally, Chen Xin didn't have much thought about this. The three-proof door he installed was 20 cm thick. If the two doors were locked from the inside, it would be difficult for a tank to remove the two doors. .

But now that the system has been upgraded, Chen Xin feels that he can still make his door stronger and more reliable, and improve his defense a little bit.

In Chen Xin's conception, he will add the current two three defense gates to three, and renovate the corridors that enter the shelter.

The first door is naturally the outermost door of the shelter. After entering, it should be a washroom that can be cleaned and disinfected to clean and disinfect personnel and vehicles entering the shelter from the outside world.

Although there is no such terrible thing as nuclear radiation in the outside world, since knowing that the chemical factory has exploded, Chen Xin knows that the air outside is no less deadly than a nuclear bomb exploded in front of his house.

The toilet is absolutely necessary. Those toxic and harmful substances that have now diffused into the air may not be as deadly as nuclear radiation, but if they are accidentally contaminated, in today’s era of medical conditions far less than before the apocalypse, the degree of death is terrifying. I'm afraid it's still on top of nuclear radiation.

If nothing else, if you are drenched in acid rain, with today's medical conditions, unless Chen Xin can create a medical cabin that can repair body tissue, it will be better than death.

The acid rain now is not the same as before the disaster. Before the disaster, the body was red and itchy at most, causing allergies or lung diseases that required medical attention.

But the acid-rain acid-base concentration is now much higher than before the disaster, and if it gets drenched, it will really corrode the skin.

After the cleaning room, Chen Xin was going to build a preparation room.

The so-called preparation room is a place used to prepare travel equipment.

Chen Xin intends to put all the protective equipment that may be used when going out here, and move the garage up.

In this way, you can do the conditioning here, and after you have everything ready, you can start from the conditioning room without needing to thread the protective equipment into the interior of the shelter.

This both frees up space inside the now somewhat crowded shelter and reduces the possibility of outside harmful substances being brought into the shelter.

Between the cleaning room and the preparation room, Chen Xin also plans to install another partition door to block harmful substances from entering the shelter through the air. At the same time, defensive weapons can be installed between the preparation room and the cleaning room.

Although Chen Xin did not intend to harm anyone, he still had to take precautions.

He is no different than the various defense facilities of the official refuge, and the gate outside is not as strong as the official refuge. If the gate is opened, he must have some means of self-protection that can kill the enemy.

The most ideal way is of course to make the kind of laser corridor in the "Resident Evil" movie, no matter how many people come, one will die.

But Chen Xin just thinks about this kind of thing. Actually, it's not that it can't be done, but it's not cost-effective.

Therefore, Chen Xin's plan is to get a heavy machine gun facing the direction of the gate of the shelter. When an unidentified person or an enemy comes in, he can shoot directly, which is convenient and quick.

However, there is no heavy machine gun at hand, and Chen Xin plans to use bows and arrows to transform into bed crossbows instead.

In a sense, using a crossbow is even more powerful than a machine gun, and the effect is better.

Even if it is transformed into a repeating crossbow, the lethality is equally unremarkable, and the arrows can also be recycled and reused, which is efficient, energy-saving and environmentally friendly.

Thinking about it like this, the design drawings in Chen Xinxin are almost the same.

The first three-defense door is used as the door. After entering, there is a cleaning room. The cleaning room is connected to the preparation room. The middle is connected by a short corridor. Two partition doors are installed. It is the enemy, then shoot him a string of candied haws.

After entering the preparation room through the two partition doors, it is necessary to pass through a three-defense door to officially pass through and enter the corridor connecting the shelter.

At the bottom of the corridor is the last three defense gate.

With such protection, Chen Xin felt that the safety of his shelter could be improved a lot.

In addition to protection, Chen Xin also intends to adjust the short-wave antenna and air vents inside the shelter, so as to avoid dangers such as the enemy cutting off his own communication and poisoning the interior of the shelter through ventilation pipes.

Would you like to adjust the structure of the corridor as well? Make a floor concealed door and add another defense?

Chen Xin thought about it carefully, but finally gave up on the idea. It's not that it can't be done, it's just unnecessary.

It's been three years since I wrote the book, and it's the first time I have an alliance leader, so I'm a little excited!