Defend Namsan Park

Seven drone teams pulled a 5000-kilometer transect at an altitude of 48 meters, from the sky over Gansu to the border of Guangdong. Each cloud shadow reconnaissance aircraft is equipped with a sensitive optical and infrared sensor The remote sensing platform, the Institute of Optics and Mechanics, brags that this thing can see someone smoking on the lunar crater in the state of ultra-narrow field of view-the strongest detection power currently possessed by mankind is here, and the seven big eyes are in the ultra-wide-angle state An average of 100 hours can complete an area scan of nearly [-] million square kilometers. If suspicious traces are found, the field of view can be narrowed immediately and tracked in real time.

In order to catch the No. 093 Sword Angel, the best human beings tried their best.

But Angel 093 never thought of hiding.

When everyone thought it would be as hidden, tiny, and lurking in the night as the Lighthouse Angel, the Sword Angel burst into the room like an elephant, shocking everyone—how big is the Sword Angel? Woolen cloth?The Yunying UAV flying at an altitude of 5000 meters has to look up at this behemoth. The white cumulonimbus clouds are no higher than its waist height.

Fuck - that's the first thought that pops into any drone operator's mind.

"This angel is too fucking big, isn't it?"

This is the second thought that pops up in people's minds.

No. 093 Knife Angel, instead of calling it a Knife Angel, it is more vivid to call it a Spinning Angel. It is like an elegant ballet dancer who lands on one foot and touches the ground with a single foot like a needle point. It began to inflate after a few meters, and the black shell tended to be stable during the high-speed rotation. While rotating, it flew close to the ground at an ultra-high speed of Mach 23, orbiting the earth.

Obviously, people lack an intuitive concept of the super high speed of 23 times the speed of sound. It is difficult for them to imagine what it would be like to move at such a speed in the atmosphere. A drone at an altitude of 5000 meters can see the horizon 60 kilometers away, and it took less than [-] seconds from when people discovered that the knife angel appeared at the end of their sight to when the knife angel crossed the drone's reconnaissance array.

At first it was just a vague black shadow, only the size of a grain of rice, like a slight bump on the horizon. People were excited when they found it, and a big stone in their hearts finally fell to the ground, because the worst prediction did not come true. Before the Sword Angel could sink into the ground, its outline and edges gradually became clear after ten seconds, and people became astonished after 20 seconds. On the top of the stratosphere where the curvature of the edge of the earth can be clearly seen, all landform features were blurred. The undulating mountains and valleys have been flattened into a large sheet of paper, but the Sword Angel is spinning on the paper like a spinning top, casting thousands of square kilometers of triangular black shadows on the ground.

After 30 seconds, panic began to spread, because people found a reference point-compared with the mountains, lakes, rivers and cities at its feet, the Sword Angel is a huge sky fortress, it is at least [-] meters high, and the clouds are as high as the waist , Its top width is also [-] meters, but the toe at the bottom is as sharp as a needle.

After 40 seconds, everyone was dumbfounded. The big rock that landed in their hearts sank into the unfathomable abyss again, and it sank down into the center of the earth. Over the shoulder, it only takes an instant to cross this line, and the camera cannot capture it.

After all, human beings are creatures living in a low-speed world. The action potential conduction speed of nerve cells does not exceed 100 meters per second, and the speed of chemical synapses to transmit information is even slower. The brain itself is a slow organ. In the limited and scarce imagination of the brain, a high-speed moving object should roar past, create a strong wind, rub against the atmosphere, become red and hot, and generate shock waves, but the sword angel subverts these inherent impressions. Atmospheric friction, this giant, unimaginable to ordinary people, traveled through the Central China and North China Plains at a speed 23 times faster than sound, without any movement.

No wonder it can cross the Sichuan Basin silently.

"Such a big angel can still exist stably? Has it not exceeded its own P-Yang limit?"

"Can you lock it?"

"I can't catch it... this damn thing is so fucking fast, fuck me fuck me."

The extreme high speed has brought huge troubles, and everyone finds it tricky. As long as you zoom in a little, no lens can catch up with the sword angel, and even its trajectory cannot be determined.

"Our previous guess was correct! It should pass near the Sichuan Basin! Great! There is a chance! Get ready for image collection! Attention all units, get ready for collection!"

"Is there anything around 151 that can be mobilized?"

"Take a picture! Take a picture!"

"All data from visible light to infrared bands are being collected! The X-ray and gamma-ray analyzers have been activated, the observation axes are aligned, and the video signals of the second and third units are cut! We need high-speed cameras! Super high-speed camera!"

"Joint Center, which camera is the fastest in our hands? How many frames per second?"

"There is one with 100 million frames, but it may not be able to capture it."

"Up, up, up, up! As much as you can catch, don't let it escape! The data collection window is only 2 minutes, and it will be difficult to catch it when it slips away from our noses."

"Fucking Mach 23."

The location of Knife Angel is a small crimson circle on the big screen of the Joint Index Center, which is at the junction of Shaanxi Province and Hubei Province, but its possible direction is a huge area enough to cover the entire Sichuan Basin, and the intelligence agencies are still trying their best. Try to narrow down the forecast horizon.

But their shrinking speed is not as fast as the sword angel's own moving speed.

The Joint Index Center is as busy as a vegetable market, everyone is holding on to the phone and yelling, as a brand new angel that has never been observed, No. The speed is too fast, the observation window of human beings may only be less than 093 minutes, this is an extremely precious opportunity to collect data and intelligence, everyone is very excited, visible light, infrared, X-ray , γ-ray, atmospheric, and geomagnetic field, various task teams ran back and forth in the main control hall.

Until the sharp siren silenced the noisy voices in the hall, all the people holding the phones raised their heads blankly.

"What's going on?" Someone shouted angrily.

Someone at the innermost side of the hall slowly raised his hand. It was the intelligence team doing trajectory calculations.

They finally came to the result and narrowed down the possible moving direction of the Sword Angel to an acceptable level. The intelligence team cautiously projected the final result on the largest screen, which was a narrow corridor, and everyone present could see it. My heart skipped a beat—it abruptly intersects the slender mountains of the 151 Nanshan Security Base.

People held their breath, their eyes wandered, subconsciously backtracking along the trajectory to confirm the current location of the Sword Angel, but their eyes immediately bumped into the terrible crimson eye of the storm—it had already arrived at the door, and the countdown showed 27 seconds left .

26 seconds.

25 seconds.

my day.

One of the phones dropped to the floor, breaking the plastic casing.

The shrill whistle of the wind conch siren sounded over the entire city of Chongqing.

From the first time humans saw the true face of the sword angel to the 151 catastrophe when the alarm was sounded, there was only an interval of 7 minutes.