“…… From another point of view, since the human characteristics of prehistoric civilizations are similar to those of modern humans, most of the mechanical design and scientific ideas have places that can be borrowed from each other. On the other hand, this also leads to the uselessness of a lot of information, such as the algorithm of the linkage system of the six-legged spider that the Privy Cavalry made public in 2175, which is not much better than the human-made algorithm......"

-- The article "Prehistoric Civilization is Technology, Not Religion" in the Allied Science Bulletin, "Nutshell" (This article is blocked for religious reasons in many places that recognize the Privy Hermitage as a legitimate prohibition and the True God Cult as a legitimate religious belief.) ）

****

"Warning, a huge obstacle has been detected on the running track, change the track immediately, countdown to the collision, 73, 72 ......"

"I want to!"

Calm down! Calm down! Ling Yu gritted his teeth, fortunately, the great fear did not make this third-rate TF lose his mind at the last moment, and pressed the urge to squander the propellant, Ling Yu did not make any movement for a full ten seconds, just to calm himself down.

The footage from the camera had lost its meaning due to the rapid tumbling, Ling Yu turned off the picture with his gaze, and placed the virtual three-dimensional image of the computer on the main window, the computer was faithfully and indifferently drawing a road map of the impact through the guò radar, and the countdown was ruthlessly calculating the remaining time that Ling Yu would turn into a tomato that fell against the wall.

Is there nothing that can be done...... Just when the tremendous pressure of death caused Ling Yu to almost crush his teeth, he suddenly noticed a detail on the three-dimensional imaging.

"Jeunse! What is the accuracy of 3D mapping? ”

"More than 99%!"

At this moment, Jiesi exerted the qualities that a professional soldier should have, and there was no nonsense at the critical moment, but only provided the information that Ling Yu needed most.

That's enough!

"Start mapping obstacles right away."

"Obstacle mapping...... Done, imaging. ”

Glancing at the countdown, there were still more than twenty seconds left, Ling Yu glanced at the obstacle that had been mapped - it was a huge, almost undulating frisbee-like object, if Jiesi was right, the mapping accuracy rate was 99%, this obstacle with a smooth surface might be his only chance to live!

"Then let's take a gamble and see if my Ling Yu's life is so hard!"

When there were still a full twenty seconds before the impact, Ling Yu turned on a highest-speed jet, this time the jet that consumed almost 20% of the propellant only changed the frequency of his rotation, but for the TF who was engrossed, the strengthened reflex nerve was enough to judge his attitude at the time of impact.

Just with your legs on the target!

"Turn on the sight device!"

Ling Yu turned on the camera, at this distance he could already clearly see the obstacle in front of him in the gap between the tumbling, it was an extremely huge man-made structure, or something like a spaceship, and the results of the survey, the black shell did not have too many potholes, and Ling Yu's landing point was the side of the circular spaceship.

"I--you-mom-!!!!"

The young man who uttered a national curse at the moment of life and death had already turned on the overclocking state - although the increase in physical speed was meaningless at this time, all Ling Yu asked was for his reflex nerves and brain to reach the highest power!

The young man who was spinning quickly opened the jet to the maximum at the last moment of contact with the obstacle - after a precise calculation like a computer, Ling Yu made sure that the nozzles of the main jets of his feet were facing the smooth spaceship shell at the last moment when he touched the outer shell of the spaceship!

The last 30% of the fuel was quickly burned out, but the kinetic energy was not completely dissolved, Ling Yu's legs hit the outer shell of the spaceship heavily, but the young man immediately leaned forward, and rolled against the outer shell of the spaceship in the previous tumbling position!

In the same way that falling from a height can be reduced by rolling over the damage, Ling Yu's tumbling on the outer shell of the spaceship significantly reduces the kinetic energy carried by himself, but Ling Yu overlooks a problem - an almost smooth shell does not mean completely smooth!

The tumbling youth mercilessly hit a bulge that I don't know what it was, although the TF's strong bones and muscles far beyond ordinary people withstood the impact, but the rolling action was instantly destroyed, and the tumbling instantly turned into a horizontal roll.

And what was even more terrifying was that Ling Yu, who had come to his senses, found that he would soon roll off the outer wall of the spaceship and become a piece of garbage floating in the universe forever!

"Tsk-"

Without hesitation, Ling Yu slammed his elbow on the ship's hull, and although it didn't leave any scars, it made him change his posture again—from rolling sideways to flying upside down, like a guy sliding down a huge dome.

Without a hint, Ling Yu could only visually measure the time when he turned into space junk, but fortunately, the helmet camera also had a camera on the back of his head, giving Ling Yu the approximate time of death like a reversing mirror.

Ling Yu, who had no choice but to tug at the shell with both hands, hoping for something to grab at the end, but this time, there was no longer any protrusion on the smooth outer wall.

The young man still hasn't given up his dying throes, but fate has pronounced his death sentence - unless he turns into Spider-Man at this moment, there is absolutely no chance of surviving.

"Ling Yu, if you need it, my electric heating knife is in the mezzanine of the umbrella bag behind you!"

At the last moment, a voice like a heavenly sound came from the headset, Ling Yu couldn't care about complaining, he subconsciously put his hand behind his back, and after two seconds of fumbling, the young man didn't hesitate to pull out the dagger and pierce it on the shell of the spaceship!

Probably because of the age being too old, the artificial electric heating knife, which could not penetrate the metal of the prehistoric civilization at all, miraculously pierced into the shell of the spaceship, drawing a deep ravine, and Ling Yu, who was lying on the spaceship, could even faintly hear the tooth-aching sound of metal being rubbed from the shell of the spaceship.

However, at the current speed of deceleration, it seemed that it was no longer enough to stop before Ling Yu flew out.

Thirty-five seconds is as long as thirty-five years, and thirty-five seconds have passed since Jessie shouted the prompt.

"Jeunese ......"

Finally, Ling Yu's voice came out of the headphones.

"Huh?"

"Next time...... Tell me what ...... I have before I go."

Ling Yu, who was floating in the universe, glanced at the helmet mask that was already covered with sweat - the sweat like a waterfall brought by extreme nervousness and fear had exceeded the power of the washer.

"Uh...... I'm sorry...... You okay. ”

Ling Yu still held the dagger tightly, he raised his head, and the helmet display clearly showed that the blade was only five centimeters away from the edge of the ship's shell, that is, even if he advanced another five centimeters, the young man who had exhausted all the propellants would become a dry corpse floating in space forever.

"Anyway, thank you for the knife."

Although Ling Yu had already slipped off his shell and was suspended outside the spaceship, he had finally stopped.

***

"This is Airlock Fifteen."

Ling Yu raised his head, and not long after he passed the photo, Jiesi's voice came from the earphones, "It seems that this is what we are looking for." ”

"I see the door." Ling Yu tightened the electric knife in his hand - considering that the probability of any weapon on Earth hurting something here was not very high, this was also the only weapon in his hand,

"But I don't think there's electricity here." Ling Yu held the knife across his chest in his right hand, and in his left hand he held the flashlight he had taken off his helmet and placed it on his right hand, observing the surroundings and making additions.

"There should be a mechanical control device for the members to escape," Jiesi's prompt always came in time, "There are similar devices on the 'Ark', and it seems that prehistoric civilizations also took into account that electronic devices may not be so reliable." ”

"I'll look for it." Ling Yu took a careful step, it seemed that because of the previous impact, the gravity boot could only exert 40% of its power, which meant that Ling Yu could only maintain less than half of the gravity to walk on the spaceship.

"Usually on the right side of the door, there will be a device like a distribution box, of course, only for the general compartment door, the airlock door should not be able to open from the outside......"

"Thanks for the meteorite and the explosion." Ling Yu mastered his strength, and lightly tiptoed over a crack of more than ten meters, landing in front of the door he had seen earlier. The young man glanced at it, hooked the corners of his mouth, and knocked off the lid of the manual operation device with a knife, "The airlock has been completely broken, this one in front of me should be an ordinary airtight door, you see." ”

"See, Lucky, it's the same model as the one on the Ark, and the opening method is being uploaded to you." Ling Yu took pictures, and Jiesi brought good news.

"Speaking of which, I was just thinking." Waiting for the download is always boring, considering that Ling Yu did not receive a special education in the mechanics of prehistoric civilization, Jiesi sent a detailed illustration of the operation method, glanced at the progress bar of the turtle crawl, Ling Yu turned on the chat mode, "Actually, the situation I was in just now is not dangerous, right, even if I can't stay on the shell of the spaceship, I think I can teleport back to Earth, and then come back next time." ”

"Theoretically, it's fine." Jessy's voice was not ashamed of an afterthought, and the knight girl, who was as bold as her boss, smacked her lips, "It seems that our IQ just now has gone to zero." ”

Ding Dong's prompt sounded, Ling Yu turned on the projector, projected the operation diagram in the air next to him, and continued to chat while starting the boring operation, "I tried to call the coat of arms on the back of my hand just now, at least the energy transmitted back is still there, this thing seems to turn blue only when it is full of energy to go back and forth." ”

"Can you make sure you come home?"

"What, you're afraid I'll teleport to the Knights?"

"I'm not afraid," Jessie chuckled on the other side of the headset, "It's a big deal if you strictly follow the customs of the East." ”

"What do you mean?"

"It's nothing, the door is about to open."

"Hmm." Ling Yu nodded, and after disarming a few safety devices as illustrated, his hand grasped the joystick, and took a breath, Ling Yu pushed the joystick in, and then rotated it half a circle.

"Be careful."

There was a reminder from Jiesi in the earphones, Ling Yu didn't answer, but she was already in good spirits.

After hundreds of thousands of years - at least 120,000 years since Homo sapiens came out of Africa, perhaps even longer, the mechanical device of this door still faithfully carried out the order, and the violent air flow drilled out of the crack in the door, causing Ling Yu to subconsciously take a step back and grasp the door frame next to him.

The door was completely opened, and there were some debris floating out with the airflow, Ling Yu patiently waited for the airflow to completely stabilize before entering the dark corridor, and closed the door without forgetting it.

"I went in, and there was no light."

"Roger."

Ling Yu walked slowly, and in a vacuum, only the sound of his own footsteps coming back from the floor, dull and lifeless.

After walking in the vacuum trail for about ten minutes, just as Ling Yu felt that his bones were about to be frozen by the endless darkness and silence, the light of the flashlight reflected another door.

"I'm in trouble."

"What's wrong?"

"A door, no manual switch," Ling Yu looked around carefully, and did not find the same manual switch as before.

"Take a picture of me."

"Wait."

Just as Ling Yu stepped back to take a picture, in the light of the shaking flashlight, he suddenly noticed a tiny blue dot.

In order to confirm that it was not his own dazzle, Ling Yu turned off the flashlight, and after a brief period of pitch darkness, his eyes finally caught a faint blue light.

Ling Yu stepped forward, the source of the light came from a small platform slanted at the door, reaching out to wipe the thick dust on it, Ling Yu saw a familiar pattern emitting a blue light.

It was the same pattern as the one on the back of his hand.

"What's wrong, what's the situation?"

"Wait a minute."

Ignoring Jiesi on the other side of the headset, Ling Yu stretched out his hand and pressed it on the small platform, and in an instant, he felt the nanomachine under the skin of the back of his hand become active again, and then, without warning, the light made him almost blind again.

"Click-click-click-click-"

Ling Yu, who had subconsciously made a defensive move, quickly realized what was happening—the intense light came from the light overhead, and the slight vibration under his feet was more like the vibration of the generator he was familiar with.

"This is the place of the ...... Is there even electricity? ”

Ling Yu muttered to himself, but the next second, when his eyesight returned, through the door that had been opened, he saw a scene that he would never forget for the rest of his life.

It was the inside of the spaceship, and under the light of the lights that had survived for more than 100,000 years but were still faithful, it was a space larger than the entire 47th city.