The architectural style is something that changes all the same. For example, if you want to have an empty room, you need at least two load-bearing walls. If you need to take an elevator, you must open a vertical elevator shaft between the top and the bottom. The longer the corridor, the more you need to fix the horizontal and vertical steel bars. Outside the thin wall, an external protective panel must be added.

99% of buildings are in this model, because if this is not the case, the building will not be solid. Even if it is a so-called "modern-style" building with a unique appearance, it will be like this inside, just wearing a fancy leather.

This kind of architectural template also leads to the fact that as long as you know the structure of one floor, it is very convenient to infer the general style of the entire floor.

Lu Yuan is now in such a state where there is a complete map in his mind, so he is moving forward very quickly.

Of course, his progress was not the way to move around in the corridor, but the [vertical] downward method. The specific operation was that he hid in the toilet, then placed his hand on the floor, and used the "期" skill to drill a hole in the floor, then jump down, and then continue to drill holes in the floor.

Because the drain of the toilet cannot be turned around in the building, it is mostly vertically up and down. In other words, it is likely that the toilet is also under the toilet.

The Ark Group has not been so crazy that it is installed in the toilet. This has led to Lu Yuan digging down with peace of mind.

In just two minutes, he dug down four layers. At this time, a large number of soldiers had already assembled above his head, rushed to the square and fought with the apostles.

In the headphones, the command of [Prophet] is still continuing.

“Continue to the next level…”

“The next level…”

"After 10 seconds, a person will enter the toilet. You'd better fill the hole on your head... and let that guy have a sleep."

"No one will come to the next three floors, you can take a break..."

The prophet's tone was very relaxed. After all, he had the ability to predict. Under his command, Lu Yuan had already reached the 13th floor underground, dozens of meters above his head. He didn't know what the battle was like. How long could those people borrowed from the foundation last when facing the firepower of the Ark Self-Defense Force and how far he was from the mysterious [Ark Host].

Lu Yuan can no longer think about these problems, so he can only continue to do whatever he wants.

“Next floor…”

“Next floor…”

In the headphones, the prophet's voice became smaller and smaller, becoming blurry. Lu Yuan knew that he was too far from the ground and the signal would eventually break.

"Is this underground deep?" Lu Yuan thought depressedly, and his colleague jumped off another layer.

"What's next?...Prophet? Hey?!!"

There was only a chaotic rustling sound in the headphones.

Lu Yuan sighed, took off the headphones and stuffed them into his pocket.

The next path is up to you.

Lu Yuan continued to go down. In such a deep underground, the chance of chasing soldiers coming was very small. After going down several layers, Lu Yuan finally discovered something... that was, he seemed to be in the end.

At least there was no toilet any further down, because he found that there was already rocks underneath after burying a two-meter-deep pit on the ground.

Now, he was about 100 meters underground. Lu Yuan pushed open the door of the toilet and found that there was a corridor outside the door, similar to the floor map in his mind. It seemed that every floor of the ark was carved from the same mold.

The lights are still very bright, but I don’t know if it is too deep. Or the Ark Group started to shut down a few months ago, resulting in no employees here. Anyway, there seems to be no one on this floor.

Even after walking for a while, Lu Yuan found that there was no surveillance camera here.

In this case, Lu Yuan summarized two possibilities.

First, the Ark Group doesn't believe that there will be an intruder who can reach such a deep place.

Second, the Ark Group does not want the things on this floor to be seen by people, so there cannot be video or any monitors here.

No matter which one it is, it is beneficial to Lu Yuan.

So Lu Yuan began to walk around this floor. In such a quiet situation, it should be impossible to have a "suddenly rushing out a large army of dozens of people". If there were only a few people, Lu Yuan believed that he would definitely be able to solve it.

Let's go and go shopping.

About 5 or 6 minutes later, Lu Yuan came to a very spacious passage. He walked along the passage. At the end, he saw a flash of a huge iron gate that was obviously different.

This iron door looks very strong at first glance, and is the type that cannot be opened without the correct method.

Lu Yuan was not afraid of this type of door. He walked over, put his hand on the door, and soon pierced a hole. Then he walked in.

And as soon as he entered the door, he was stunned.

He saw a platform and a railway.

Yes, it is the railway. It is more than 100 meters underground. A railway is in front of Lu Yuan. I don’t know where the black tunnel leads to.

Lu Yuan took a deep breath and jumped off the platform.

He had no expectations that he could directly find the location of the Ark host. After all, the Ark Group covers a huge area, and in terms of geographical location, he still needs to walk more than ten kilometers in to reach the center of the Ark Building Complex.

His original plan was to first go to the bottom floor of the nearest building and try to see if the underground part of the Ark Group is connected. If so, then it would be best. But if not, then he would first touch in a rough direction. If he couldn't touch it, he would go up to find the signal, ask the Prophet to help him eliminate the options, and then continue to touch it.

Fortunately, luck finally stood on Lu Yuan's side this time. He found a railway in such a deep place, and this railway could most likely take him to find the place he should go.

So Lu Yuan began to run along the railway...

He ran very quickly. Here, he didn't need to worry about the pursuit. His feet were trampling heavily and densely on the dark road, and the tunnel was full of roar.

Just touched it like this, he ran for half an hour. According to the speed, he ran at least half a distance from the city.

Finally, Lu Yuan saw a small highlight very far away, which should be the end of the tunnel.

(The exam is about to be taken. I feel that every day of updates is just to deal with things, but it will end soon. I always want to finish it quickly, but the conflict is so serious.

I believe that everyone can read this process awkwardly, so you can wait until it is finished before adding to the end. Of course, if you can resist this slow update, I will not stop you, so I can only say thank you.

As for the new book... I'm working on it with all my heart, it will be a very magical book because it has an outline.
Chapter completed!