The old earth, the land ravaged by the large-scale nuclear war, is no longer the same as it used to be, and the sea has been eroded by serious pollution. After the "doomsday" crisis, the planet has changed irreversibly.

More than 50% of the land has turned into deserts, and the color of the ocean has changed, purple, black Regions with different pollution levels have different performances. There are almost no living creatures in the shallow sea, and the cut-off ecological chain has led to a certain degree of variation in deep-sea organisms. The species that survive well and fail to adapt to environmental changes will also be extinct.

As many scientists in the 21st century predicted, the polar ice caps eventually melted. After that, the Ohio Valley was flooded, Australia was submerged, and New York was a bog

War brings death, death stops war.

When the last people look at their devastated homes and find that the second "sun" disappears in the sky, it is hot, thirsty, painful, regretful and desperate All these things come to mind and will accompany them until death comes.

Intense radiation has polluted the fertile land near the equator, and the city's ruins have been shining in the dark for a hundred years. Some species have disappeared, others have changed and evolved.

As time flies, dark clouds begin to gather on some barren and desolate land. Heavy rain pours down, cooling the toxic sea water boiling on the earth's surface, dispersing the dirty air, and healing the earth's gaping wounds.

When the warm rain washed away, it showed a dead land.

There will always be people who will survive. Human life is as fragile as a mole ant, and certainly as tenacious as a mole ant.

The survivors climbed out of the ruins of civilization and embarked on the road of survival. They found that the temperature was hotter than in the past. In non desert areas, the water vapor in the air was thicker than before. Above the head was an orange sky, and the sun was shining brightly.

Among the ruins, some strange plants began to sprout, even when no one was watering them, even when they were exposed to the scorching sun. These wild plants with strange colors and shapes are also growing wildly, covering land after land.

For the vicissitudes of the earth, this climate change is not the first time In the ice age, changes in the earth's crust and volcanic eruptions all left traces, but did not change the trajectory of the earth's movement. Now, like the past three billion years, it is still moving in space. Orbit around the sun.

Technology has become the yellow flower of yesterday, and people who have survived the afterlife have returned to their original living conditions. Forming a tribal like social structure, wandering on the surface of the earth, searching for food And a safe haven.

In those non desert areas, there are poisonous swamps, deep canyons, muddy depressions and desolate mountains. But in addition, on such a large earth, there are still one or two pure lands like a paradise

There is such a place in one of the canyons of North America. It's a huge underground cave like a city. It's pocket shaped and covered with thick vegetation like a canopy. Withstanding most of the scorching sun. It has comfortable temperature, land and environment suitable for normal crop growth, clean and abundant underground water Most importantly, there is the wreckage of the "half" starship.

No one knows why this spaceship is here. Maybe it was a secret research base of some country. Maybe it was a spaceship that fell down after a war.

In a word, a tribe finally found this place. The environment gave them the support to survive. The wreckage of the Starship made them recover the kindling of civilization. Once again, life flourished and a new human society was established.

Nearly three centuries have passed. It has become the only human gathering place on the earth. People living in it call it Shenyou village.

…………

Crystal lake underground laboratory.

At the end of the road, he searched all the turnovers and came down the corridor. Now. In front of him, there is an upward step, just like the zigzag fire stairs usually used in residential buildings. Next to them are iron railings, and the treading board is also metal. You can see the situation above through the gap under your feet.

He took out his weapon and approached carefully. The light here was not good. It was hard to see if there was an ambush from below.

"Two people in the Jianghu, don't hide. I see you all!" The last attack is obviously bluff. He is not afraid to expose his whereabouts, because he knows that this is the end of the laboratory. There is no doubt that the top is the exit. If you want to ambush, you can only choose this last place. For the two people who are lying in ambush, their whereabouts must have been found long ago.

"The grenade trick is brilliant, huh?" The doomsday attack said: "crazy trace sword shadow, do you have this ability? You turtles in the Jianghu can play tricks. " He swears and fights as much as possible without being blocked and forbidden. He wants to motivate the other party to show up. After all, it's not very beneficial for the enemy to be in the dark and he is in the bright at the moment.

"What's the matter? Still afraid to come out? " "You are two to one, aren't you afraid of it?"

In response to his only echo.

"Hum You have to think about it. " Doomsday attack: "under the effect of undifferentiated reduction of survival value, the consumption of both of you is twice as high as that of me. If you are afraid to fight when you are dominant, you will only waste your survival value in vain." After a pause, he added: "I don't mind turning around and leaving. The farther away I am from you, the better. Then we'll see who consumes the survival supplements first. Even if I lose, you will waste at least twice as much medicine as I do."

The doomsday attack seems reasonable, but since he is here at the moment, it shows that he did not choose that strategy.

If the doomsday force feels that it has no chance to win in the face-to-face confrontation, it is impossible to continue to approach the opponent. When the final attack is killed, he should run in the opposite direction. Find a favorable terrain to ambush, wait for the other side to find him. If he can kill one person directly if he is successful in sneaking attack, there will be a winner.

So There is only one reason why the doomsday attack will come here, that is, he has confidence that he can win with one enemy and two, and this confidence is obviously based on some powerful skills or props.

For a while. There was still no response at the top of the stairs, which embarrassed the doomsday attack. He couldn't help thinking: is there another floor in the laboratory from the stairs? Which layer is as big as the bottom?

Thinking of this, he carefully touched the stairs and slowly walked up. He can only do so, for one thing, if the other party does not show up, he can not. Either go up or leave. If there is a layer above, he can't hear each other for an hour.

He turned back and forth, picked up the steps and went up, but he didn't really hit the ambush, and even couldn't detect any sign of a trap. But I dare not be careless in the last attack. The previous grenade incident is fresh in my memory. My teammates died because they were too close, and he was almost killed. I'm afraid this lesson will not be forgotten in his whole career or even in his whole life.

The stairs, about three stories high, went back and forth four times, and he walked for five minutes. When we got to the upper floor, we were stunned by the last attack. In front of him is a corridor, empty corridor, the end of which is ten meters ahead. The whole wall there is a gate. The gate is divided into left and right parts. The gap between them is zigzag. The thickness of the gate is no less than that of any bank's vault. And the switch beside the door has been destroyed

"What about people?" This was the first reaction to the doomsday assault.

He and the final attack have explored the end of the other side of the laboratory, and the end of this side is the exit. All the way here, he saw the trace left by the blind and the crazy trace sword shadow, also fell into the trap they arranged, and went to search every fork road. He must have gone the right way, but why No one here?

"Are they out?" The idea flashed in the mind of the doomsday attack, but he immediately denied the speculation: "impossible According to the script, the external environment is more severe than the internal environment, and the survival value may be reduced faster. Besides, the switch is broken How can they get out? " He turned to think again: "don't you say They go to the outside to start the door closing switch. Before the door is closed, they destroy the inside switch and want to close me inside? "

"I don't know It's no good going out. " After a while, he finally came up with a conjecture that he thought was right: "yes! It must be! " His mind was suddenly enlightened, but his face and tone were still the same: "they came to the end of the corridor, broke the switch of the exit, created the illusion that they had escaped from the laboratory, and then turned back They must have slipped away from the main channel and missed each other when I went to search on a fork in the road At the moment, I'm afraid they're hiding at the end of the other side of the laboratory. "

…………

At the same time, outside the lab.

Under the yellow sky, there is a sea of sand. There was a strong wind in the air, and the black sand storm swept around. If you stand in this environment without protection, it's very difficult to open your eyes. As long as you open your mouth and talk, you must eat a mouthful of sand, and the sound can't even be heard five meters away.

A "sand fish cabin" is floating in the sand sea. The cabin is 20 meters long, 6 meters wide and more than 4 meters high. The exterior shape looks like a giant armored shark. However, there is no "fin" in the sand fish cabin, and the streamlined and smooth design is on the top. The cabin is painted the same color as the desert in khaki. There is no windshield or visual device directly in front of it. It is completely driven by the internal detection radar and navigation device.

The air in the sardines is treated. Although the two players don't wear protective clothing, their survival loss status has stopped.

At this time, Feng is resting his hands on his head and sitting leisurely in the main driver's seat. It didn't take him too long to learn how to open the sand fish cabin. The operation interface of these devices is not complicated, and the navigation coordinates of the destination have already been input, so it's OK to choose the automatic mode.

When Feng could not feel out of the lab and saw the outside environment, he knew that on this planet, manual driving was basically meaningless, because