With the acceleration of the drone.

The flight speed soon exceeded Mach 4 and was still improving.

It's just that this speed is not as fast as before.

This time.

In front of Tang Rui's eyes, a systematic reminder appeared.

The scramble mode can be turned on.

Seeing this prompt, he did not hesitate and clicked on it directly.

The next second.

The structure of the body of the drone has changed.

The nose of the machine was moved upwards as a whole, blocking the two upper air intakes.

At the same time.

Under the nose of the aircraft, where the waverider torrent is located, two air intakes appeared.

Subsonic air passes through the air intake duct directly into the engine's duct and ignites without being pressurized by the positive pressure turbine blades.

The speed of the drone continues to soar at this moment.

Mach 4.5.

Mach 5.

Mach 5.5.

It didn't stop until Mach 6.2.

It's not that the speed is at the top, but that the home of the little day is too small to continue flying.

If you continue to accelerate and fly forward, you will have to fly to Hawk-chan's house.

So Tang Rui took the initiative to slow down and let the drone return to subsonic cruising again.

This time.

The drone has reached the southeast sea area of Xiao Ri's home.

As for the fighters who went to intercept him, they were still roaming around the high seas around the Yellow Sea.

Tang Rui lowered the height of the drone.

Then turn on the optical stealth mode.

In the subsonic cruising state, the tail nozzle of the engine does not emit tail flames.

Even the heat flow will be quickly disturbed and broken down by the air flowing through the drone.

So.

Optical stealth, the camera can't shoot.

Radar stealth, radar can't scan.

The heat flow decomposes, which cannot be detected by infrared.

The three stealth properties add up to make the drone disappear directly into the air.

Tang Rui controlled the drone to fly slowly at a low altitude of 2,000 meters.

The reconnaissance equipment of the UAV is in full swing at this moment.

Topography.

River movements.

Flora and fauna in the mountains, forests and fields.

At this moment, it was clearly displayed in front of Tang Rui's eyes.

Through smart glasses.

As long as he wanted to, the place he saw would keep magnifying.

The clarity is stronger than that of a DSLR camera with hundreds of thousands of cameras.

"Xiaoyi, upload the scan data to HUAWEI CLOUD, and open up a separate storage space so that it will not be discovered."

Tang Rui looked at the constantly refreshing data in front of him, and opened his mouth to give an order to Xiaoyi.

"Okay, uploading data."

The drone flies all the way.

The following data is continuously summarized and then uploaded to the cloud storage.

Strengthened drone.

The scanning system is capable of not only scanning the ground, but even penetrating the ground to scan underground pipes and underground ore formations.

Although the scanning depth can only reach 200 meters underground, it is not very accurate beyond 200 meters.

But even so.

The underground building of the small day was almost stripped away by him.

"The tower calls the fish pond."

"Fish pond received, please speak."

"Please report your current location."

Tang Rui heard the inquiry of the tower and looked down at the Shiba Park below and the radio tower next to it.

"Report the tower, which is currently located in the southwestern part of the Yellow Sea."

"The tower received, please report the exact coordinates."

Tang Rui quickly opened the map, casually clicked on a point in the southwest of the Yellow Sea, and checked the coordinates there.

"Fish pond received, currently coordinates ......"

"Received by the tower, when are you going to return?"

"It is expected that it will take another 2 hours, and drone performance tests are currently underway."

"Tower received, I wish you all the best."

"Fish pond received, thank you."

After Tang Rui finished speaking, he didn't take this seriously, but instead focused on observing the situation below.

He really didn't expect it.

The little day contestant actually dug so much underground space under his own capital.

The deepest can reach up to 500 meters underground.

The drone scans along the way of the underground space.

More and more underground areas are being scanned.

Links.

There is more than one underground space, and the most place is divided into 23 floors.

Tang Rui pouted.

Take control of the drone and start going around in circles over the city.

The reconnaissance system is all turned on to the maximum.

"Xiaoyi, based on the scan data, 3D modeling."

"Okay, 3D modeling is underway."

In the Eastern Data and Western Computing Network, there is a huge stream of data being exchanged at all times.

And at this moment.

Xiaoyi distributes and packages the entire 3D modeling data into the entire network.

Some waste computing power that consumes electricity, but is not actually used.

At this moment, Xiaoyi was mobilized and began to carry out 3D modeling in addition to data.

For the entire computing network.

This data exchange did not attract much attention.

And the data in all aspects are similar to usual.

Unless you analyze each of them, you can't get to the bottom of the changes.

But when you analyze them one by one, that's impossible.

You can't tie up the world's supercomputers.

Whether quantum supercomputing works or not, we still have to say both.

Tang Rui looked at the three-dimensional model of the city in front of him, constantly improving and refining, and he was also shocked.

After all, this model is too detailed.

Sidewalk markings on the ground, billboards at convenience stores on the street, cables buried underground, and sewer lines.

At this moment, it is all embodied in the three-dimensional city model in front of you.

Tang Rui was skeptical.

If he takes out the data of this city model, and then finds a group of directional blasting experts, he can directly study the overall directional blasting of each node of the city.

When the time comes, the explosives are planted in the designated location.

Press the button.

Rumble!

This is where the spectacular scene of city-level directional blasting appears.

The more I thought about it, the more excited I became.

But he could only think about it, he couldn't have taken out this data, and he couldn't have gone to the blasting expert.

However, the scanning data of the drone, after a while, the large drone he made on the surface is done, and it can be taken out for some good things.

It took more than two hours to wander around.

The data that should be collected is almost all collected.

However, the 3D city model is not finished yet, after all, the later it is, the larger the amount of data.

But he wasn't in a hurry.

Anyway, the scan data has been uploaded to the cloud storage, and it can be extracted at any time for calculation.

Pull the joystick.

The drone adjusts direction and begins to return home.

It was late at night.

It's time for him to go to bed, too.

If you don't scan something today, you can continue to scan tomorrow without worrying.

On the radar level of small days.

His drone could not be detected at all.

It's not just a small day.

Tie it up with Daddy Eagle Sauce, and it won't work either.

"Call the tower."

"The tower received, please come in."

"Fishpond asks to return."

"Permission to return."

The tower was very happy to hear Tang Rui say that he was going to return.

It's finally back.

I don't know what he was doing in the Yellow Sea, so he wandered around for two hours.

What is there to see in the sea at night.

Are you looking for a mermaid?

Across the sea.

Enter the maritime boundaries of the Yellow Sea.

Tang Rui opened the Lombard lens again.

Moment.

The ground-based radar again scans the signal of the drone.

This made the two countries jump again.

I looked for more than two hours before.

Not even a single hair was found.

As a result, people are now swaggering again.

And look at its flight voyage.

There is no difference from the previous flights.

Taunt.

This is an absolute mockery.

In the ground radar stations and air command centers of the two countries, Xiba and Baga sounded at the same time.

But none of this affected Tang Rui's return.

Also with a supersonic cruise at Mach 2.1, the drone quickly went inland.

However, 500 kilometers away from Jinling, Tang Rui opened the Longbo lens again.

Why turn it on?

Because there are fools in the sky watching, and he doesn't want fools to know where he is.