In the history of human science and technology, there has never been a weapon that can deal with a moving speed of Mach 23 in the atmosphere, which is even faster than the warhead of a strategic intercontinental missile when re-entering the atmosphere, if the knife angel really moves on the surface at the first cosmic speed, then human beings are likely to have no way to take it, Chen Yu had a faint bad premonition in his heart, they returned overnight after taking samples and taking pictures, drove the car on the dark road, and drove smoothly into the ditch next to the road.

The four of them reluctantly went down to repair the car, at this time it was completely dark, it was wet and cold outside, in the wilderness of 151 hundred kilometers away, contact was cut off, and the phone could not be reached, Chen Yu leaned on the car door and turned on the flashlight, dangling to the dark trees in the distance.

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"The chassis is fine, right?"

"No problem...... It's just a rubbing, and I don't think it's a big problem. A staff officer of the Intelligence Section got up and patted the dirt off his body, turned his head and asked, "How much gas is left?" ”

"Enough for us to drive back."

Chen Yu twisted the brightness of the flashlight to the maximum, and the bright pillar of light pierced into the darkness like a sword.

Strictly speaking, except for the Sichuan Basin, the whole world is a desert with no people, since the Seraphs came to the earth, the living space of human beings has been compressed to 1% of the original, and since then except for Sichuan, it is an abyss.

Chen Yu has always had this kind of imagination: no one can say what kind of changes the angel has brought to the earth, if it is not only angels who appear in this world?

"Have you ever heard of a famous American urban legend called the Mothman?" Chen Yu asked.

"I've heard that the Mothman is said to be a sign of disaster, bad luck and death, and the unlucky people who meet the Mothman will not end well." Someone knows this allusion, "Why, put a staff officer, have you seen the moth man?" ”

"I'm not sure if it's a mothman, it's on our way, behind the black bushes, a pitch-black shadow, five or six stories high, with one leg straddling this side of the road, one leg straddling the other side of the road, with a very long, very long neck, a neck like a snake." Chen Yu stared at the road when he came, "It has four red eyes and a mouthful of white teeth, and it is smiling at us. ”

Everyone turned their heads in horror and looked in the direction of the pillar of light of Chen Yu's flashlight, only to see that the dark and turbid air was filled with a thin mist, and there was nothing else.

It's hard to say whether Chen Yu really saw it or faked it, he may have really foreseen something that night, that strange shadow - maybe a creature may not be a creature, if you have to find a word to describe and describe it, then the most appropriate one is the Grim Reaper. On that dark and damp road, on the way back from contact with the traces of the presence of the Sword Angel, Chen Yu felt that he had foreseen the death of someone.

The four-person team finally stumbled back to 151 at half past one in the morning, and the four of them were so tired that they were about to break up, but they didn't have time to rest, and they were immediately pulled up by the base command and the joint command center for a meeting.

The observation of a new angel is a significant event for the entire human society, which means that there is one more enemy that human beings need to face, which means that the human world is one step closer to the end of the world. The discovery of the Knife Angel also confirms another conjecture - like the Sun and the Moon, there are also mooned angels on Earth, orbiting the Earth at the first cosmic speed, hanging high in the air above the Kármán line, and no one can detect them until the radius of their orbit is reduced to contact with the surface.

Knife Angel 093 may be the first satellite angel to make contact with the earth's surface, and it is foreseeable that since it is reducing the altitude of its orbit, then there is no reason to stop this trend, and no matter in the three-dimensional universe can stop the four-dimensional manifold, it will fall into the center of the earth along the spiral orbit and cut the earth intact.

From this point of view, it will be the sharpest knife ever seen in human history.

This is another world-destroying level angel.

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"We have speculated on the possible trajectory of angel number 093 according to the existing surface traces, a total of 31,750 situations, of course, this is only the most preliminary guess, they may not be accurate, after all, we know almost zero about it, to accurately predict the trajectory of angel number 093, we still need a lot of more accurate, more intuitive and more detailed data."

Thirty-one thousand seven hundred and fifty white spirals were densely packed around the earth, looking like a chaotic ball of yarn, and everyone's eyes were focused on the monitor, and everyone knew that more than 30,000 predicted trajectories were meaningless.

At the Joint Staff Meeting of Science City, the Joint Command Center and the 151 Command, all the remaining experts of human society were present, and it was so urgent that 151 could not even wait to go to work the next morning, it was a meeting held at half past three in the morning, and the participants were blown up from the bed by telephones.

"Is it really that fast?" Someone asked.

"If gravity is dominant, it should be so fast." The expert from the Science City on the other end of the line replied, "The orbital speed is the lowest speed that the satellite angel orbits around the earth, and it may even be faster." ”

"Is it possible for it to pass through the Sichuan Basin again?"

"If it's a celestial body, then it should run regularly." "More than 88% of the more than 30,000 trajectories we estimate will pass through the Sichuan Basin at least once," Science City replied. ”

"What would be the worst-case scenario in your predictions?" Someone asked, "Tell me about the worst." ”

The experts from the City of Science glanced at each other on the screen.

"In the current model, the worst outcome is that it has sunk into the Earth's lithosphere, and at the moment it is moving rapidly under our feet, reducing the altitude of its orbit in circles and circles, passing through the crustal mantle, and finally falling to the center of the Earth." "The matter of the three-dimensional universe is like air to angels, but there is nothing we can do with what sinks deep into the earth's crust, it can travel through the ground at a speed of Mach 23, and it takes a lot of effort for us to drill a small eye a kilometer deep." ”

"What happens if angel number 093 falls to the center of the earth?"

"We're done before it falls to the center of the earth." "It does have the ability to slice the earth in circles." ”

Most of the people present had in their minds the image of a watermelon being cut open with a knife.

Realizing that their thinking was wrong, Akademgorodok explained: "Ladies and gentlemen, the earth is a huge celestial body with a mass of 60 trillion tons, and its main structure is supported by gravity, and gravity is a very stable force in the universe, it is the natural attraction and convergence of matter, so you can't cut the earth into two halves like cutting an apple, because it will naturally converge, in fact, if you cut the earth and break it in half, the latter one may not even be able to do it."

The atmosphere in the conference room was a little relaxed, and many people were worried that the earth would become two hemispheres, the mantle and core would leak out like egg yolks, and the atmosphere would all escape.

"But just because the Earth won't be cut in half doesn't mean it's not deadly." "Don't forget that we're sitting in an earthquake zone. ”

The image on the demo screen was switched to a satellite image of the Eurasian plate, and an invisible red pen drew a circle around the location of the Sichuan Basin.

"Under our feet is a large fault tectonic belt formed by the extrusion of the Eurasian plate and the Indian Ocean plate, and to the west of us is the Qinghai-Tibet Plateau and the Himalayas, which are the result of the Himalayan orogeny, which shows that we are at the junction of several large plates, especially in the Zitong-Chengdu-Weiyuan-Guang'an area, there is a huge tensile torsional fault structure in the Sinian to Lower Triassic strata, and there may be huge stresses accumulated inside the rock mass, in case Angel 093 cuts through here......"

Animations on the big screen go deep into the earth's crust, and experts from the City of Science explain to those present that humans are crouching on a large powder keg.

"The result was 100 percent catastrophic, we estimated the lowest intensity to be 8.5 on the Richter scale, and the seismic waves would radiate across the entire Sichuan Basin, and there would be nothing left."

There was silence again in the room.

Shen Jiang raised his hand.

"Comrade Shen Jiang, what's your problem?"

The girl tilted her head, pressed the toilet paper with one hand to stop the nosebleed, and pointed to the screen with the other:

"Having said all that, it's all your guess."

"Yes, just speculation based on current observations."

"Most of the guesses are unreliable, not to mention that no one is a real angel expert, you are not professional enough, it is too early to make a conclusion." Shen Jiang straightened up, yawned, and looked around, "You don't know what Angel No. 093 looks like, no matter how much you discuss it, it's all fantasy, I suggest you go back and rest, and tomorrow transfer all seven high-altitude drones, pull a two-thousand-kilometer line, and see what it is." ”

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The 151 reconnaissance operation against Angel 093 was in full swing, and the only remaining seven Cloud Shadow high-altitude reconnaissance planes and 14 aerial tankers in the human world took off from three bases at the same time, and in groups of three or three, they pulled a 2,000-kilometer-long optical and infrared reconnaissance line in southwest China, squatting to guard the No. 093 Knife Angel that might pass under their noses.

No one knows when Angel 093 will pass by nearby again, so the drone should stay in the air for as long as possible, and of course, it is better to pray that it does not really sink into the earth's crust.

Faced with a Tuxingsun who moved at a speed of more than Mach 23, humans were helpless.

The Joint Command Center and the Base Command have been busy with this matter for several days, but Shang Lu, who is in the workshop system, is a little late-aware, Chen Yu worked overtime in the Operations Section of the Headquarters for several days in a row, and one night went back to the dormitory to get a change of clean clothes, and mentioned it to Shang Lu, and Shang Lu only knew about it.

"Newly observed angels?"

Shang Lu held the water cup and sat on the bed to sort out Shen Jiang's OPM-BCI helmet adaptability experiment report, his MEG system training with Shen Jiang had come to an end, and there were still one or two classes to end after calculating the time.

"Yes, as far as I found in the past two days, I have only caught the traces, and I have not seen the main owner."

Chen Yu opened the drawer of the wardrobe, his eyes jumped between the clumps of socks and folded panties, and chose the right one to throw into his bag.

"Don't forget to bring a few more pairs of insoles to change, it's been very wet in the tunnel lately." Shang Lu casually asked, "How many numbers is this?" That newly observed angel. ”

"I know, when do I need your little chief engineer to teach me how to live, your ability to live is zero." Chen Yu said, "As for the new angel, it is number 093. ”

“093？”

Shang Lu's heart jumped.

"Hmm, 093." Chen Yu nodded, "Tentatively named Sword Angel." ”

"Bang dang!" With a bang, the water cup in Shang Lu's hand fell to the ground.

Chen Yu turned his head in surprise, and saw that the water cup on the floor had fallen to the floor, and the hot water had been spilled on the ground, Shang Lu's face was pale, his eyes were scattered, and he stared blankly at his feet, his hands trembling uncontrollably.