February, 2521.

Deep winter, extremely cold.

Heavy snow, white fluff in the sky, like goose feathers.

Bright lights flickering.

The night is cold.

On the clean and wet roadside, fully armed disinfection vehicles occasionally drive over the cold and slippery ground with whistles, and the anti-skid chains slap on the ground and make a crackling sound.

White mist rises into the sky with the disinfection vehicles, like a giant dragon turning over.

On the balcony of the residential area beside the road, big red lanterns are hung.

It's the New Year.

Amid the hustle and bustle, thanks to the high walls and wire mesh that stretch across the continent, and the efforts of tens of thousands of night watchmen in isolation suits guarding the high walls, humanity has ushered in a rare peaceful New Year.

People have hung up lanterns that they didn't have time to hang last year.

A family of three in rubber suits adjusted their masks, held each other's hands, stood on the balcony, and lit the fireworks that they didn't have time to set off last year.

Bang!

The fireworks exploded in the air.

People began to count silently, and a few stars that belonged to them were extinguished in their hearts.

The faces that disappeared in the memories, the calls that gradually faded, the vows that were made to never give up when encouraging oneself, the repeated emotions were like fireworks in the sky, which flashed and disappeared, and in the end, only the courage to face the dark sky remained.

A song rang out from the building opposite.

It was Zhong Lei's "Bath of Fire".

In such a sad and lonely moment with no way to retreat, human beings have gained a brief peace, and they need a song like this to ignite the flames in their hearts that are about to go out but cannot be extinguished.

But on the other side of the peace, there are still countless people fighting on the front line.

The family of three walked back, passed through the fog disinfection corridor, returned to the room, and turned on the communicator.

"Family communication request, waiting for response..."

Five minutes later, the communication was connected.

The voice of a woman wrapped in a fully enclosed isolation suit appeared.

The clothes she wore looked a bit like a diving suit, with a glass cover on her head.

Although there was an automatic ventilation system, she was still sweating profusely.

She was a nurse fighting on the front line, and she had a five-minute break and communication time.

She worked at the No. 626 Central Treatment Hospital, which was built on the edge of the isolation area, 1,300 kilometers away from the city.

The hospital covers an area of ​​nearly 2,000 acres and is covered by a shielding cover of the same level as the Mars base. The protective effect is almost seamless, completely isolating the bacteria outside the shielding cover.

Tens of thousands of critically ill patients have been admitted here. Although they still cannot be cured, they can alleviate the patients' pain as much as possible and let them die relatively peacefully.

She smiled at the camera, "Dad, Mom, and little brother. Are you all right?"

The family of four started chatting, talking about their daily lives, encouraging each other, and talking about whose family has lost another person, and the nurse's department has lost another comrade, and so on.

The communication was sometimes silent and sometimes full of laughter.

Many things, after seeing too much, gradually feel numb.

But this numbness is not derogatory, but everyone's heart has become more indestructible.

Just as the family of four was chatting, a panicked shout suddenly came from behind the nurse.

The nurse turned around and listened, then turned back with a pale face.

"Mom, Dad, little brother! You are leaving now! Hurry up!"

The father of the family asked, "Where are we going?"

The nurse thought for a moment, "Go to the mainland far away from the wall of separation, as far as possible!"

The mother asked, "Then where is the end? Should we come to pick you up? What happened?"

"The S bacteria have mutated and evolved. They can use mice as carriers and spread into the air with the mice's breathing. Just now, news came from the hinterland monitoring hospital that a large number of patients suddenly broke out in a completely uninfected residential community. That monitoring hospital is deeper into the safe zone than your residence! A concentrated infection has also broken out in the accommodation area of ​​our central hospital. It was an old book that had already become sick. The leader is screening the infected data of the central air-conditioning system and the results will be out soon. I don't have time to explain in detail, you guys go quickly."

Because the incubation period of the super bacteria named S bacteria is too hidden, it is difficult to detect in the early stage, and its infectiousness is extremely terrible. The current method of screening patients is very simple and crude.

Have you been in contact with contaminated air?

If yes, then you must have been infected.

No, then it's okay.

The mother cried and shook her head, "No, we are coming to pick you up."

The nurse looked back at her family and said slowly and firmly: "It's out of control. It's out of control. There are too many rats on the earth. Although the medical conditions of the central hospital are very good, it has become an isolated island in the short term. We have no supply line. You come to me and die."

As she was speaking, the little nurse was shocked, as if she had received some news.

"What's wrong?"

Her family members asked one after another.

She shook her head, "It's okay, Dad and Mom, you should leave quickly. If you don't leave now, it will be too late. When you get to the rear, someone will definitely come up with a solution. You must survive, don't let me sacrifice in vain!"

Snap!

She turned off the communication, then turned around and walked back.

She said to the head nurse through the intercom: "Sister Lin, I have inhaled contaminated air in the dormitory area. I have been diagnosed and I have no hope of survival."

Yes, once it is confirmed that you have breathed contaminated air, it is like a death sentence. You only have two months to live.

On the other side of the intercom, the head nurse Sister Lin was silent.

Not long after, the voice of the middle-aged woman opposite rang out, "Me too."

She asked, "Sister Lin, what should we do?"

Sister Lin thought for a few minutes, then turned on the hospital broadcast and said the famous "626 Declaration."

"Nothing can be done! Continue to hold our ground! We cannot take off this isolation suit until we die! All infected medical staff will go to the disinfection area regularly to replace the isolation suit energy packs and filter chambers. Infected and uninfected personnel will eat and live separately from now on."

"As long as we don't take off the isolation suit, bacteria can't escape from the isolation suit, so no more people will be infected! We can still move, so we can still do things! Several patients in the intensive care unit have shown signs of turning into moderate symptoms, which is unprecedented."

"We must prove that our treatment can improve the survival rate of severe cases. The research results of our hospital are related to the confidence of whether mankind can hold on! Therefore, I will work until I can't move, until we use up the last bullet. I hope everyone will do the same as me! We will fight to the death!"

All the medical staff who heard this, whether infected or not, responded in unison.

"Fight to the death!"

The words of this head nurse, whose name was not recorded in history books and was only known to the world as Lin, inspired all medical staff and volunteers built on the border and in the heart of the quarantine zone, and even in the middle.

Everyone roared "Fight to the death" in their hearts.

The infected people no longer took off their clothes, but only wore battle robes and burned their last drop of blood.

Or, these people took the initiative to rush out of the hospital, relying on the weapons in their hands to kill every mammal visible to the naked eye, just to reduce the pressure at the rear as much as possible.

People who are not infected will not panic all day long, but stay quietly at their posts and do what they should do.

There was a research institute that was wiped out in an instant because of carelessness.

Everyone has a life countdown alarm clock on their head.

The amazing thing is that no one panicked, but everyone became relieved, returned to the laboratory peacefully and continued their research.

Even the originally troublesome and cautious analysis and sampling work has become simple. Just spitting out a mouthful of saliva is a large number of fresh samples.

This research institute with thousands of people witnessed everyone's last two months of life in a peaceful and quiet atmosphere, and provided a lot of research references for future generations to study why the S bacteria is so perverted.

Two months later, a fire ignited deep in the base and burned everything. It was the self-destruct button pressed by the last researcher who closed his eyes.

The war became more brutal.

The S bacteria faced by humans once again became more fierce, more cunning, and more difficult to guard against.

Later studies showed that when the S bacteria evolved this time, its carrier was not only mice, but any mammal!

What is even more deranged is that after the S bacteria infect other mammals, although they will become sick, they are not fatal at all. They will only make these animals more manic and active.

Bats can fly, mice can hide underground, whales can cross the sea, and high wall defenses have gone from being impregnable to being virtually useless.

This ghost thing seems to have wisdom, and its goal is to destroy humans.

The human line is once again losing ground.

Chaos did not come as expected. Although humans have been losing in such a tragic defeat, they have always been in order.

When everyone realized that there was no way to retreat, the infected people did not panic, but became relieved.

Batch after batch of infected people abandoned their protective measures, rushed out of the increasingly smaller safety zone, and entered the increasingly larger isolation zone.

They used the remaining embers of their lives to accomplish many things.

They dug isolation belts and built trenches manually.

They set fire to the barrier belts that burned the earth.

The infected engineers returned to the factory and re-debugged the parts of the automated operation program that had minor bugs, and then set the automatic cycle operation time to infinity.

The infected production line workers, dragging their tired bodies, returned to the company that was running automatically, replaced the half-consumed nuclear fission battery pack with a new one that could be used for another twenty years.

Or, these people are busy replacing solar panels and applying fresh oil to slightly rusty machines...

The teacher returns to the abandoned school and takes out the final exam papers that have been prepared long ago but have not yet been distributed to the students from the desk.

The traffic police return to their posts and tell the hurriedly driving cars to patrol and look for infected predators of mammals.

Then, when these people have done all the things they used to do in the past, they each take up this or that weapon, carry a simple bag, and embark on the road of killing.

Sorry, neighbors on the earth.

In the past, we protected you.

But now, we have no choice.

Humans are always selfish.

If you have to choose between the extinction of mankind and the destruction of the earth, then everyone will choose the second option without hesitation.

Countless martyrs used their last two months of life to build a life defense line in the isolation zone and the safe zone.

Another winter has passed and spring has come.

This year, mankind has lost two-fifths of its population and one-third of its territory.

Compared to before the catastrophe, mankind only has half the population and less than one-third of its territory.

But in the end, mankind still stabilized its position, relying on the high-temperature barrier that is enough to melt rocks.

The high-temperature barrier ignited the unquenchable flame of mankind.

Together with the ultra-high magnetic field shield that reaches up to the stratosphere, a new safe zone was established.

The magnetic field supports the last giant sky shield of mankind.

Accompanied by the "Morning Breeze" that never stops and resounds in people's hearts.

Humanity is still struggling in ambush, trying to fight for a new life.

But the objective situation is indeed getting more dangerous.

Nearly 8 billion people are crowded in less than one-third of the territory, and the population density has risen sharply.

The energy and materials that were originally inexhaustible are gradually becoming more scarce.

If the super bacteria undergo another stage of evolution at this time, it will really be the end of the world with the current population density of human beings.

However, after two years of hard struggle with continuous defeats, the willpower of the survivors has become particularly strong.

Humanity decided to counterattack.

It must, and can only, find a solution to the problem before the super bacteria evolve again.

Otherwise, it will be extinction!