Doomsday Bunker Upgrade

"Ordinary Shelter Entrance"

"Upgrade plan 1: Increase the thickness of the protective door, improve the entrance defense of the shelter, add a biochemical radiation cleaning room, and upgrade the required survival points 1500"

"Upgrade plan 2: add screen doors, add partition doors, add new equipment rooms, upgrade the air intakes of the shelter ventilation system, and upgrade the required survival points 1350"

Looking at these two upgrade plans, Chen Xin, who had already obtained enough supplies from the SWAT team, did not consider which plan was more suitable, so he chose to upgrade all.

For Chen Xin, who can now get 15 survival points per day, when he has sufficient materials to reduce the consumption of survival points to 10%, the consumption brought by the upgrade method of selecting all of the two plans is already within his tolerance. within the range.

It's just that Chen Xin himself didn't expect that a mere oxygen generator box that didn't consume a few survival points could provide him with two survival points every day, which was beyond Chen Xin's expectations.

But this is not difficult to understand. After all, his upgraded algae oxygen generator not only produces oxygen, but also uses the generated biomass to ferment to produce biogas, which is used for fuel cell power generation.

It means that this device is equivalent to the functions of the oxygen generator, biomass incubator and fuel cell. It has greatly improved Chen Xin's current living conditions, so he can obtain more survival points. It is also understandable.

After choosing all the upgrades, the gate of the Refuge was upgraded to what he had drawn on the design drawing according to Chen Xin's ideas under the power of the system.

Sturdy and heavy protective doors, a washing room that can be used for radiation and biochemical cleaning, a maintenance room that can park cars and organize equipment, and a defensive corridor with heavy crossbows...

The current shelter is what a real doomsday shelter should look like, with a solid and reliable defense.

Driving up the car that was originally parked below and parked in the equipment room, Chen Xin also brought up the equipment that he might use when going out.

Hanging the heavy protective clothing in the wardrobe of the preparation room, all the equipment and the materials that need to be carried when going out are also neatly stacked. Chen Xin looked at the neat and tidy everything in front of him, and felt a sense of satisfaction and pride in his heart.

It's like the sense of accomplishment that you get when you finally build a cabin that makes you feel safe and secure when you play Minecraft.

And unlike the game, this is the real world, this is a real refuge, this is a real refuge that can protect Chen Xin's safety.

Through the renovation and upgrade of the entrance of the shelter, Chen Xin also moved the air vent and short-wave antenna that originally led to the mountainside to the top of the entrance and placed it in a small bunker made of thick reinforced concrete.

This bunker is not big, just a small space above the sanctuary's entrance to the sanctuary, somewhat similar to a machine gun bunker in a war game.

This is not a machine gun bunker, although in a sense, as long as Chen Xin puts a machine gun on it, it can indeed be used as a machine gun bunker.

However, the actual function of this small bunker is to protect the short-wave antenna and vents that have been moved here. It is not really that Chen Xin wants to build a machine gun bunker here.

Although in future upgrades, it is likely to become a defensive facility, but now it is only a bunker for shortwave antennas, and at most serves as a ventilation function.

The outside of the bunker is covered by the dirt of the mountain itself, leaving only a gap about the width of a palm. It is impossible to enter the bunker from the outside. It can only be entered through the passage reserved inside the shelter.

Compared with the short-wave antenna that was only covered by a camouflage cloth and placed directly in the open air, the short-wave antenna under the protection of such a small bunker is undoubtedly much safer. Antennas in solid shelter.

As for the influence of the bunker on the antenna signal, it is not without, but it is not serious. At least Chen Xin tried it, and he can still receive external signals smoothly and communicate with others.

The original vents have also undergone new changes after being transferred to the interior of the shelter. Not only are there protective covers and grille filters, but also an overpressure automatic exhaust valve has been added to the ventilation pipes after entering the shelter.

This is the ventilation equipment used in civil air defense projects. The principle is to use the air pressure difference between the inside and outside of the shelter to form a seal, block the intrusion of toxic and harmful air from the outside, and discharge the air inside the shelter to ensure ventilation and circulation. .

Although it sounds a bit complicated, the structure of this thing is very simple. With it, there is no need to worry about the external toxic and harmful substances entering the shelter through the ventilation pipe.

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At the gate of an original shopping mall in the urban area, Qin Lan and several SWAT team members are guarding here with guns.

This is the original large shopping mall in the city, with an underground supermarket and parking lot. Before the disaster, it was planned as a small shelter, which houses about 5,000 people from the surrounding communities.

The planning of this small shelter was originally intended to allow some people to escape the doomsday disaster here, and connect other shelters with passages after the disaster to be used as an underground settlement.

However, due to the deterioration of the environment and the temporary inability to supply oxygen production equipment to small shelters, the city government can only transfer people to other medium-sized shelters and temporarily seal this small shelter.

It is planned to wait until the passage connecting the medium-sized shelter here is opened in the later stage, and the oxygen production equipment has surplus, and then restart it.

Qin Lan and the others are here to help these people transfer. In addition to them, there are also city government staff responsible for the transfer.

The second batch of oxygen generators came in not long ago, but this batch is much smaller than the previous batch, with only four small biological oxygen generators.

Two of them were naturally transported to Binhu Community and the Polytechnic Institute, two medium-sized shelters that had not been allocated oxygen equipment before, while the remaining two were given to the shelter where the armed police force was located, and the other One was distributed to the factory.

It is precisely because of the lack of oxygen production equipment that the city government decided to temporarily abandon all small shelters and divert all population to medium-sized shelters.

Although there are not many people in the small shelter, there are only a few thousand people, but the transfer and resettlement of thousands of people is not an easy job. The staff sent by the city government are already overwhelmed. deal with.

Qin Lan stood in the shooting position on the roof of the armored car with his sniper rifle, and his eyes were constantly patrolling the crowd, searching for possible dangers.

In this situation, anything can happen. Qin Lan and the others must put an end to any possible criminal behavior and prevent it from turning into a mass incident.