In the video screen in front of Lu Qingliang, the operator of the Asteroid Warning Center was operating quickly.

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

That bright spot represents the Death Star, which just missed Earth. Its location is where it was first observed by the human world.

It hung there quietly, motionless. After that, it becomes the apex of a "cone of light," as if someone turned on a flashlight there.

The "light" released by this "flashlight" begins to spread at a certain angle and quickly extends toward the earth.

The size of this angle depends on the data previously obtained by our side, that is, the orbital error rate of the Death Star since its discovery, which is 3.62 parts per 100,000.

This "light cone" extends all the way to 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 an error rate of 3.62 parts per 100,000. When the Death Star has just appeared at the observed distance, theoretically it is the set of all possible points that it can pass through when it reaches its closest point to the 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, overlapped the earth.

This means that there was indeed a probability that it would hit the Earth.

Because the earth is a sphere, the 3,000 square kilometers that overlap the earth projects a total area of ​​about 10,000 square kilometers on the earth.

These 10,000 square kilometers are probably located near an archipelago in the Pacific Ocean.

The operator pointed: "This is it."

If the Death Star really hit the Earth, then its impact point must be within the area of ​​10,000 square kilometers.

All these calculations are just a simple matter for the asteroid early warning center with a complete simulation model. But this calculation was impossible to make before the Death Star finally passed by the Earth.

The reason is simple, because if the Death Star does not eventually pass by the Earth, we will not be able to accurately obtain its orbit data, and we will not be able to know what its error rate is. Without the error rate, subsequent calculations would be missing the most important data and would not be possible at all.

Now, of course, everything is different.

Lu Qingliang was full of energy at the moment.

He knew that the impact point of the Death Star predicted by the Doomsday Organization must be within these 10,000 square kilometers.

Lu Ming's entire logical system does not deny the accuracy of doomsday predictions. On the contrary, Lu Ming approved of this. He agrees that the doomsday predictions are correct. The only difference is that he thinks the doomsday predictions are not accurate enough.

At this moment, this circle located at the apex of the light cone has a radius of about 820 kilometers and a total area of ​​2.1124 million square kilometers, but only 0.14% of its area overlaps with the earth, further verifying this guess.

Because of the error, the Death Star missed the Earth. At this moment, after knowing the result after the error and knowing the error rate, people can calculate the original result of the prediction.

Compared with the Death Star, which is only a few kilometers at its longest point, the current area of ​​up to 10,000 square kilometers is certainly not accurate enough. It is merely a general scope description. But it doesn't matter. Although it is not accurate enough, it is accurate enough for the next work.

"Simulate again."

Lu Qingliang gave the order.

"yes."

The simulation that needs to be carried out this time is to simulate where the least affected area on the entire earth will be after the Death Star impacts within this area of ​​10,000 square kilometers.

After tens of millions of previous simulations, the people at the asteroid early warning base are already familiar with this kind of thing. At this moment, with the input of several commands, the results appeared in just ten seconds.

"Depending on slight differences in the point of impact, the size of the least affected areas across the planet varies. But they all converge here."

The operator's finger swiped across the screen, and the huge earth image rotated, and finally an area marked in red was presented in front of Lu Qingliang.

It is a desolate area located at the intersection of desert, Gobi and grassland. There is a small mountain called Hongyu Mountain nearby, with a total area of ​​about 1,000 square kilometers.

It was deserted, and it was more than a hundred kilometers away from the nearest city, Hongyu City.

Hongyushan is located in the suburbs of Hongyushan, about twenty or thirty kilometers away from the suburbs. It is one of the few places with relatively beautiful scenery around Hongyu City. In fact, this is still a scenic spot, and residents of Hongyu City will also come here to play in their spare time.

There are also developers who have developed properties here. Of course, they are all villa and manor types, and only rich people can afford 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 early warning center, and then logged into the video conference room of the second operation team.

"The Ark base is here!"

Lu Ming took a look and found that the place was more than 2,000 kilometers away from his city, and it was impossible for him to get there in a short time.

"I'm close, I'll go first."

He Wei stood up.

The city she lives in is only about 600 kilometers away from there. It can be reached in less than an hour by plane.

But there's no airport there. If you change to a helicopter in the middle, the total time is expected to be extended to about an hour and a half. But this is still the fastest speed.

"Qing Liang, you immediately contact the nearest armed force there and ask them to immediately arrange for manpower to conduct concussion detection and locate the detailed location of the Ark base. Pay attention, measure bit by bit, search bit by bit, and dig deep into the ground. We must also find the Ark base!"

"yes!"

"He Wei will take command on the spot after arriving. You don't need to wait for me and Lu Ming. You can make decisions on emergencies in advance."

"yes."

"Lu Ming, the two of us will leave as soon as possible."

"yes."

After a brief communication, the meeting ended immediately.

Lu Qingliang pulled out a document, checked it for a moment, and dialed a number.

"Hello, I am Lu Qingliang, the police chief of the Ministry of Public Security. There is an unexpected task that you need to carry out immediately. I will send the relevant documents to you immediately."

Lu Qingliang took out the document, drafted the contents, and went directly to Li Wenhua's office. Li Wenhua didn't hesitate and stamped it immediately. After that, Lu Qingliang faxed the documents.

In less than ten minutes, heavy but orderly footsteps were heard. Many security officers got into their cars, and dozens of cars started to move immediately.

This is just a scene of an armed forces station. At this moment, around this area, dozens of scenes like this were happening at the same time.

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

Through satellite measurement and control technology, this land with a total area of ​​up to 1,000 square kilometers has been accurately divided into 100 areas. According to the accuracy of the vibration detection equipment, each area has been accurately marked for vibration. Location of testing.

100 areas correspond to 100 helicopters. Coupled with coordination, command, backup, logistics, etc., there are more than 150 helicopters dispatched at this time.

Although the shock detection does not take much time, even if there is only a group of people moving back and forth, it will not take much time to test all this area. But at this time, the second operation team directly mobilized enough manpower to complete all tests in the shortest time.

The so-called military is expensive and quick. After it was almost certain that the Ark base would fall into a certain degree of civil strife because the end had not yet come, Zhang Dingshan was unwilling to waste any time.

Who knows if time is lost, what important things or clues will be destroyed in the Ark base.

Less than half an hour after Lu Qingliang's order was issued, the first shock detection personnel dispatched by helicopter had landed at their corresponding detection locations. Construction and installation of the equipment began immediately, and it detonated a few minutes later.

"Report to the headquarters, there is no abnormality in plot 7."

"There is no abnormality in Lot 65!"

"An underground cavity was detected in Lot 33. However, according to expert analysis, the maximum diameter of the cavity does not exceed 60 meters, so the suspicion can be ruled out."

"There is no abnormality in Lot 52."

"Report to the headquarters! A large underground cavity has been detected in Lot 75! And the echoes are messy, proving that the internal structure of the cavity is complex!"

At this moment, the plane He Wei was riding on had entered the descent process. She paid no attention to the weight loss caused by the plane's rapid descent. She just stared at the laptop in her hand.

When Lot 75 was marked in red, He Wei swiped her finger, and immediately, the rest of the lots turned gray. Only Lot 75 was enlarged enough to see the undulations of the ground surface.

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

It was desolate and dead. Only a few hardy species can survive here. Normally, even hikers hardly come here.

And, it's not just like this now. This has been true for the past few decades, even hundreds and thousands of years.

Only about 6,000 years ago, because the climate was different from today, this place was still a grassland with rich water and grass. At that time, there were large-scale human settlements here.

To a certain extent, large-scale underground construction here is indeed concealed enough as long as it can be hidden from aerial observation methods such as satellites and aerial photography.

"The helicopter brigade and the drone brigade launched an aerial search to find possible entrances and exits. After the first to seventh brigade were in place, they launched a ground search. The eighth to tenth brigade, dig for me as soon as they were in place!"

The plane roared and landed at the airport. When the plane stopped, He Wei immediately rushed off the plane, got on the waiting helicopter, and went straight to Lot 75.

When she arrived at the frontline headquarters, nearly a thousand vehicles of various types carrying thousands of armed personnel also arrived at the same time. Armed personnel with live ammunition launched a dragnet investigation on the ground, searching for anything that might be abnormal. Based on the results of previous vibration tests, a huge engineering team immediately started construction.

"Data shows that the highest point of this underground cavity is 16.3 meters above the ground. With current engineering capabilities, it will take about an hour to dig."

He Wei nodded and gave the order: "The robot team is ready, the commando team is ready."

At this moment, the robot team is moving out hundreds of armed robot dogs, crawler-type unmanned armed vehicles, unmanned demolition vehicles, unmanned communication relay vehicles, etc., and starting debugging on site. Logistics personnel added fuel and weapons to these machines.

More than a hundred of the best armed personnel were selected to form a commando team. Once the passage opens, they will follow the robot into the Ark base.

At this moment, a large number of full-body protective suits were also transported. This kind of protective clothing not only has its own oxygen, but also has excellent sealing properties. It can protect against poisonous gas, viruses, bacteria, etc. It also has performance comparable to bulletproof vests and explosion-proof vests.

Ordinary bullets can't penetrate it at all. Even lower-energy explosions cannot harm the human body under its protection.

It even has some radiation protection properties.

Such a set of full-body protective clothing is extremely expensive. But now it is like worthless cabbage, everyone has one thing.

Everything is under intensive preparation.

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

"oh?"

He Wei perked up.

In such a place where birds don't poop, and more than ten meters deep underground, there is a man-made concrete layer. What this means is self-explanatory.

"Clean the work surface and blast!"

"yes!"

The construction team continued to clean up, and soon the concrete structure of this layer was exposed with an area of ​​more than ten square meters. The surrounding stones, sand, soil, etc. have been cleared and preliminary reinforcement has been carried out to ensure that they will not pour down during blasting operations.

The demolition team entered the scene, quickly installed the explosives, and immediately detonated them.

With a bang, the smoke dispersed.

To prevent accidents, He Wei did not send anyone to check, but sent a drone to go.

Then, He Wei saw that this powerful explosion had blasted out a pit more than one meter deep in this layer of concrete, but it... had not been penetrated yet.

The thickness of this thing is beyond imagination.

There was a sneer in He Wei's heart.

"Is it really a doomsday fortress prepared to fight against the doomsday? It's so thick."

"Blow it up again!"

"yes!"

Another loud bang. This time, a large, dark hole was revealed.

"Robots, enter! Commandos, prepare!"

He Wei buckled off her helmet and prepared to lead the commando team in.

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