In the video screen in front of Lu Qingliang, the operator of the asteroid warning center is operating quickly.

With his operation, a bright spot appeared on the big screen, about 150 million kilometers away from the earth.

That bright spot represents the Grim Reaper, which had just brushed shoulders with Earth before. Its location is the first time it has been observed by the human world.

It floated there silently, motionless. After that, it turned into one

The apex of the "light cone" is like someone turning on a flashlight there. by this

The "flashlight" was released

The "light" begins to diffuse at an angle and rapidly extends in the direction of the Earth. The magnitude of this angle depends on the data obtained by the previous side, that is, the orbital error rate of Death since its discovery, which is 3.62 per 100,000.

This one

The "cone of light" stretches all the way to this point of the earth and then stops. At the top of the light cone, a huge circle with a radius of about 820 kilometers appeared.

This is the set of all possible points at the time of the observation distance when Death Star has just appeared at the observed distance, and theoretically at the time of reaching the closest point to Earth.

That is, its final orbit must be within this circle. Lu Ming saw that a small part of this circle, about 3,000 square kilometers or so, overlapped the earth.

This means that there is a real probability that it will hit the Earth in the first place. Because the Earth is a sphere, the 3,000 square kilometers that overlap the Earth project a total area of about 10,000 square kilometers.

This 10,000 square kilometers is probably located near an archipelago in the Pacific Ocean. The operator pointed, "This is it." "If the Grim Reaper really hit the earth, then its landing point must be within this 10,000 square kilometers.

All these calculations are simple for an asteroid warning center with a well-developed simulation model.

But such calculations will never be possible until the Grim Reaper finally passes by Earth. The reason is simple, because if the Grim Reaper does not eventually pass the Earth, we will not be able to accurately obtain its orbital data, and we will not know what its error rate is.

Without the error rate, the most important data would be missing for subsequent calculations and would not be possible at all. Now, of course, everything is different.

Lu Qingliang was in high spirits at the moment. He knew that the impact point of the Grim Reaper predicted by the Doomsday Organization must also be within this 10,000 square kilometers.

Lu Ming's entire logical system does not deny the accuracy of the doomsday prophecy. On the contrary, Lu Ming's attitude towards this is appropriatory.

He agrees that the doomsday prophecy is correct, but disagrees only that he believes that the doomsday prophecy is not accurate enough.

At this moment, this circle, which is located at the apex of the light cone, has a radius of about 820 kilometers and a total area of 2,112,400 square kilometers, but only 0.14% of the area overlaps with the earth, which further verifies this speculation.

Because of the error, the Grim Reaper passed by Earth. At this moment, knowing the result of the error, knowing the error rate, people deduce the original result of the prophecy.

Compared to the Grim Reaper, which is only a few kilometers at its longest, the area of 10,000 square kilometers at this moment is certainly still not accurate enough.

It's just a general description of the scope. But it doesn't matter, it's not precise enough, but it's accurate enough for the rest of the work.

"Let's simulate it again." Lu Qingliang gave an order.

"Yes." This time, the simulation needed was to simulate where the least affected area of the entire Earth would be after the impact of the Death Star within this 10,000 square kilometer area.

After tens of millions of simulations before, the people at the asteroid warning base are already familiar with this kind of thing.

At this moment, with the input of several commands, it was only a dozen seconds, and the results were already there.

"Depending on the subtle differences in the impact points, the extent of the least affected areas on the planet also varies. But it's all here. The operator swiped his finger across the screen, and the huge image of the earth rotated, finally presenting an area marked red in front of Lu Qingliang.

It is a desolate area at the confluence of the desert, the Gobi and the grassland, and there is a small hill called Hongyu Mountain nearby, with a total area of about 1,000 square kilometers.

It is deserted, and it is more than 100 kilometers away from the nearest city, Hongyu City. Hongyu Mountain is located in the suburbs of Hongyu Mountain, which is twenty or thirty kilometers away from the suburbs, and is one of the few places with more beautiful scenery around Hongyu City.

In fact, it is still a scenic spot, and in their spare time, the residents of Hongyu City will also come here to play.

There are also developers who have developed properties here. Of course, they are all villas and manor types, and only rich people can afford to buy them.

"This is it! The Ark base of the Doomsday Organization must be here! ”

"Good!" Lu Qingliang got the data, immediately cut off contact with the asteroid warning center, and then landed in the video conference room of the second operation team.

"The Ark base is here!" Lu Ming took a look at it and found that the place was more than 2,000 kilometers away from the city where he was located, and it was impossible for him to arrive in a short time.

"I'm close, I'll go first." He Wei stood up. Her city is only about 600 kilometers away.

By plane, it takes less than an hour to get there. It's just that there is no airport. If you switch to a helicopter in between, the total time is expected to increase to about an hour and a half.

But it's still the fastest speed.

"Qingliang, you immediately contact the nearest armed force there, and ask them to immediately arrange for manpower to carry out shock detection and lock the detailed location of the Ark base. Pay attention, you have to measure little by little, find it little by little, and dig three feet into the ground to find out the base of the ark! ”

"Yes!"

"After He Wei arrives, he will command on the spot, there is no need to wait for me and Lu Ming, you can make a decision on emergencies in advance."

"Yes."

"Lu Ming, the two of us will also set off as soon as possible."

"Yes." After a brief conversation, the meeting ended immediately. Lu Qingliang called up a document, and after checking for a while, he directly dialed a number.

"Hello, I'm Lu Qingliang, the sergeant of the Ministry of Public Security. Now there is an urgent task that you need to carry out immediately, and I will send you the relevant documents immediately. Lu Qingliang took out the documents, drafted the contents, and came directly to Li Wenhua's office.

Li Wenhua did not hesitate and immediately stamped it. After that, Lu Qingliang faxed the document over.

In less than ten minutes, the sound of heavy but neat footsteps was instant, and many security officers got into the car separately, and dozens of cars started immediately.

This is just the scenario of an armed force station. And at this moment, around the area, there are dozens of places like this happening at the same time.

In addition to this, there is the roar of helicopters and the overwhelming swarm of drones. The highest armed forces, such as missiles and fighter jets, have also raised the warning level to the highest level, and can be dispatched at any time to deal with any unexpected situation.

Through satellite tracking and control technology, this plot with a total area of up to 1,000 square kilometers has been accurately divided into 100 areas, and according to the accuracy of the shock detection equipment, the location of shock detection is accurately marked in each area.

For 100 zones, there are 100 helicopters. In addition to the overall planning, command, reserve, logistics, etc., more than 150 helicopters have been dispatched at the moment.

Although it doesn't take much time to detect the shock, even if there is only one group of people, moving back and forth, it doesn't take much time to test all the places.

However, at this time, the second team of operations directly mobilized sufficient manpower to complete all the tests in the shortest possible time.

The so-called soldier is fast. After almost certainly falling into a certain degree of civil strife in the Ark base because the end had not come, Zhang Dingshan was unwilling to delay any time.

Who knows if there is a delay, something important or clue in the Ark base will be destroyed.

Less than half an hour after Lu Qingliang's order was issued, the first shock detectors to take a helicopter had already landed at their respective testing locations.

Construction and installation of the equipment began immediately, and it was detonated within a few minutes.

"Report to Command, Plot 7 is non-anomalous."

"There is no anomaly in Lot 65!"

"Underground cavities were detected on plot 33. However, according to expert analysis, the maximum diameter of the cavity does not exceed 60 meters, which can rule out suspicion. ”

"Lot 52 is non-anomalous."

"Report to Command! A large underground cavity has been detected on plot 75! And the echo is relatively messy, which proves that the internal structure of the cavity is complex! At this moment, the plane He Wei was on had already entered the descent process.

She paid no attention to the weightlessness caused by the plane's rapid descent. She just stared at the laptop in her hand.

When Lot 75 was marked red, He Wei swiped her finger, and immediately, the rest of the plot turned gray, only Lot 75 was magnified to the extent that the surface of the land could be undulated.

She saw the undulating sand dunes on the surface, the sparse weeds, and the numerous rocks.

It's desolate and deadly. Only a few tenacious species survive here. Normally, even trekkers don't come here.

And it's not just now. This has been the case for decades, centuries, and millennia.

It was only about 6,000 years ago that there was a large-scale human settlement in this area because the climate was different from what it is now, when it was still a grassland with abundant water and grass.

To some extent, large-scale underground construction here is indeed hidden enough if you find a way to hide from aerial observation methods such as satellites and aerial photography.

"Helicopter brigades and drone brigades launched aerial searches to find possible entrances and exits. After the 1st to 7th teams were in place, they launched a ground search. Eight to ten teams, dig for me as soon as you are in place! The plane roared down to the airport.

When the plane stopped, He Wei immediately rushed off the plane, got on the helicopter that had been waiting next to him, and went straight to Lot 75.

When she arrived at the front headquarters, nearly a thousand vehicles of various types carrying thousands of armed men also arrived at the same time.

Armed men with loaded guns carried out a dragnet search on the ground, searching for everything that could be abnormal.

According to the results of the previous shock detection, the huge engineering team also immediately started construction.

The data shows that the highest part of this underground cavity is also a full 16.3 meters above the ground. At current engineering capacity, it would take about an hour to dig. He Wei nodded and gave an order: "The robot team prepares, the commando team prepares." At this moment, the robot team is moving out hundreds of armed robot dogs, tracked unmanned armed vehicles, unmanned blasting vehicles, unmanned communication relay vehicles, etc., and starting debugging on site.

The machines were refueled with fuel and weapons. The best of the 100 armed men who were selected formed the assault team.

Once the passage is opened, they will follow the robots into the Ark base. At this moment, a large number of full-body protective clothing has also been transported.

This kind of protective clothing not only carries its own oxygen, has excellent sealing, can protect against toxic gases, viruses, bacteria, etc., but also has performance comparable to body armor and explosion-proof clothing.

Ordinary bullets can't penetrate it at all. Even a lower-energy explosion could not harm the human body under its protection.

It even has some radiation protection. Such a set of full-body protective clothing, each one is sky-high.

But now it's like a worthless cabbage, with a set of hands. Everything is in full swing.

At this time, a message came from the construction site: "Report to the command!" At a depth of 16.3 meters, a concrete layer was found! ”

"Oh?" He Wei was in good spirits. In such a place where birds don't poop, and where it is more than ten meters deep underground, there is an artificial concrete layer, what this means, it is self-explanatory.

"Clean up the work surface, blast!"

"Yes!" The construction team continued to clean up, and soon the concrete structure was exposed to an area of more than 10 square meters.

Stones, sand and dirt have been removed from the surrounding area and have been initially reinforced to ensure that they do not fall during the blasting operation.

The demolition team entered, quickly planted the explosives, and immediately detonated them. With a bang, the smoke cleared.

In order to prevent accidents, He Wei did not let people go to check, but sent a drone to go. Then, He Wei saw that this powerful explosion, although it blew this layer of concrete out of a deep pit more than one meter deep, it turned out to be ...... It hasn't been blown through yet.

This thing is thicker than you can imagine. He Wei sneered in her heart.

"Is it really a fortress of doom prepared to fight the end times? It's so thick. ”

"Blow it up again!"

"Yes!" Another loud bang. This time, a large black hole was revealed.

"Robot, on! Commando, get ready! He Wei buckled her helmet and prepared to lead the assault team in.