Doomsday Bunker Upgrade

In the garage of the city police station, Qin Lan and other special police officers are sorting out equipment. They have a field mission today to go to the railway station to receive a batch of equipment that has arrived in the city by rail.

"Li Tou, what equipment are we going to receive today?" While Qin Lan was checking the gun in his hand, his teammates asked the leader curiously, "Usually receiving supplies, it's not always the city. Is it someone from the government? Why do you want our SWAT team to receive the equipment today?"

"You didn't listen carefully when Team D and the political commissar gave a briefing just now? Didn't you say it? It's a batch of important supplies that are vital to the shelter's life and death, so this time it's an armed escort, and we need our SWAT team to receive it." The leader of Zuo Li was also in field equipment, and he answered questions from his subordinates while checking the ammunition.

Just hearing Li Tou's answer, Qin Lan had some doubts. She asked Li Tou, "Li Tou, shouldn't the armed police be involved in escorting and escorting? Why should we let the special police be involved?"

In the Yan Kingdom, the armed forces controlled by the state are divided into three parts: the army, the police and the armed police.

Among them, the army is responsible for external operations and safeguarding national territorial sovereignty, the police is responsible for maintaining social order and fighting crime internally, while the armed police is between the police and the army. Local security and handling emergencies.

According to the function, the matter of escorting important materials should really be the work of the armed police.

Li Tou himself was a little puzzled about this issue, but now that the task has been assigned, it is impossible for them to say that they will go to the task after they figure it out.

So Li Tou could only say to Qin Lan: "Maybe the city government is doing something wrong. It's different now. I'm afraid some things are not according to the rules."

Qin Lan didn't know what to say about Li Tou's words. She just wanted to ask why it was not the armed police escort but their special police, but what Li Tou said was involved in the careful thinking of some people in the city government, which was inevitable Qin Lan felt helpless for a while.

Although the country is still there and government agencies are still functioning normally, the end of the world is the end of the world. Although many things look the same as before, they are actually different.

Li Tou may also feel that what he said is a bit inappropriate, so he patted Qin Lan on the shoulder and said to her: "Don't think so much, maybe it's just that the armed police can't recruit people? It's not like this has never happened before. Carry out the mission first, and think about it when you come back.”

Hearing what Li Tou said, Qin Lan also suppressed the messy thoughts in his mind and focused on the task.

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The disaster brought about by the meteorite impact destroyed the original human civilization. Although there are many survivors now, these humans have only survived.

For these survivors, the most important thing is to survive. As for rebuilding human civilization, although the country is rebuilding after the disaster, it is progressing very slowly. It is still a very long thing to truly rebuild human civilization.

This apocalyptic natural disaster brought darkness and cold, although on the surface everything seems to be okay now, it seems that it will not be long before people will be able to leave the shelter and start post-disaster reconstruction.

But in fact, the real test brought by the meteorite impact has yet to come.

Anyone who has studied biology in junior high school knows that all things depend on the sun to grow. Without sunlight, most of the life on earth would not be able to survive.

Now, the dust from the meteorite has covered the sky and lost sunlight, not only the drop in temperature, but also the complete ecology that could have been gradually restored.

The previous global fires have burned more than 90% of the vegetation on the earth, and a large amount of carbon dioxide has been released into the air, which has maintained the temperature drop for a short time, but without sunlight, the temperature will still cool down quickly.

Many people may have no concept of this, but just think that the four seasons on the earth can cause temperature fluctuations of tens of degrees just because of the change of the direct sunlight point, and then you can understand what the loss of sunlight means to the earth.

And there is a more critical problem here, that is, without light, photosynthesis cannot proceed. Without photosynthesis, carbon dioxide in the air will not be able to be converted into oxygen.

Oxygen is a very critical existence for life. The bigger the life is, the more dependent it is on oxygen. Only some anaerobic bacteria can survive on the earth without oxygen. Other organisms, whether they are plants or animals, are Oxygen is needed to sustain life.

A fire burns not only the forest vegetation that can convert carbon dioxide into oxygen, but also consumes a considerable part of the oxygen and emits a large amount of carbon dioxide.

Although marine ecology still exists, marine plants such as seaweed can still convert some carbon dioxide, but without sunlight, even seaweed cannot perform photosynthesis, and soon the ocean will fall into a crisis of hypoxia before the land.

Without oxygen, the fish in the ocean will die in large numbers, and the marine ecology will collapse.

As for land, the previous global fires had already wiped out a considerable part of terrestrial life and burned most of the plants, and the terrestrial ecology had collapsed by then.

After the double collapse of the marine and terrestrial ecosystems, the oxygen cycle in the atmosphere will cease to exist, and the oxygen content in the atmosphere will be further reduced.

Under normal circumstances, the oxygen content in the atmosphere is 20.9%, and when the oxygen content is lower than 18%, the human body will begin to experience hypoxia.

It's like altitude sickness. At first, the breathing may be a little faster, and the heart rate and blood pressure will rise. It is easy to feel tired, and people who are stronger may not even feel at all.

However, as the oxygen content decreases further, there will be obvious fatigue, attention will begin to decline, thinking will become confused, and even lose consciousness and fall into a coma.

If the oxygen content continues to decrease, the human body will experience symptoms such as headache, tinnitus, vertigo, nausea, vomiting, and even death.

Originally, there were a large number of plants on the earth for photosynthesis, and the oxygen content in the atmosphere was maintained at a relatively stable level.

But now that the ecosystem has collapsed, it is impossible for the ecosystem to self-regulate to restore the oxygen content in the atmosphere until the sun shines again.

But fortunately, before the disaster occurs, human beings have three months to prepare. Although the main energy of the governments during that time was on how to prevent the meteorite from falling, this does not mean that the countries did not prepare for the disaster. plan for how to deal with it.