Lin Rui pointed to a place on the photo and asked Sergey. Sergey took the picture and looked at it for a long time, "This is a room."

"I'm talking about the side of this room." Lin Rui shook his head.

"The stairs next to it." Sergey hesitated.

"Next to the stairs." Lin Rui tapped the photo with his hand. "Look carefully."

"Next to the stairs is the elevator." Sergey said helplessly. "Isn't this normal?"

"For the second-story villa, it's okay for you to jump off the roof. Do you think you need to install an elevator?" Lin Rui looked at Sergey.

"Well, because the Yankees have a lot of money, the CIA has a large opaque budget, and they are lazy." Sergey opened his hands.

"Elevators are installed on two floors unless it is for special purposes. For example, you need to frequently move a lot of materials or other things. Under normal circumstances, of course, there is no need to install elevators. After all, walking stairs is faster than taking elevators." Lin Rui nodded. "But let's not just stare at the top. In addition to going up, the elevator has another function to go down.

This two-story villa has an elevator built, indicating that it is likely to have a large basement, and it is likely to have several floors. "

"Underground building? So this elevator does not go from the first floor to the second floor, but from several floors underground to the first or two floors above the ground!" Sergey nodded.

"Then the question is, if you have a prisoner, you want to detain him properly. Should you keep it in the basement or upstairs?

If it were me, I should lock him in the basement.

If he is locked upstairs, it means that he may still be in contact with the outside world. In the basement, as long as he closes the door, he is almost isolated from the world, without a window. Lin Rui explained.

"Hey!" Sergey patted his head, "I should have thought that in Poland, many villas used to have basements.

I have worked here before, and many wealthy people in Poland used to put valuable jewellery or art in the basement.

Because the constant temperature and humidity environment is more conducive to the preservation of these artworks.

If this villa originally had basements, the CIA people would transform these basements and easily turn them into underground prisons. "

"Yes, so Mr. K once mentioned that after the CIA bought this villa from the Poles, it underwent substantial repairs. It cost a lot of money.

But if it were just this two-story villa, even if it was demolished and rebuilt, it would not cost so much money.

Yankees are indeed rich, but they also have a budget stuck. No matter how rich they are, they can't spend it. So I guess they put a lot of money into secret construction and built a well-equipped underground prison under the villa.

As for the villa, this in itself is a target that can be discovered. So they will do what they want, and simply set up a room that seems to be used to detain prisoners.

This is the room we found before, with reinforced window bars and protective doors. Take such a room as a decoy and false target, and at the same time as a means of early warning. "

"In this way, we were almost fooled." Sergey frowned.

Lin Rui nodded, "Anyway, I think that further observation is needed. This action is not trivial. Once exposed. Our life will be very difficult. The CIA is not a good thing."

"I also think we'd better be cautious. According to the situation that the boss just said, this black spot prison is not that simple." Kuaima thought for a while.

"Then we will go again tomorrow. This time we will be more prepared. The focus is still on reconnaissance." Lin Rui nodded.

Cobain walked in at this time, "I found some information. Maybe it's useful to you."

"What did you find?" Lin Rui asked, turning around.

"I looked into the local historical records about the villa you mentioned. I found some interesting history.

This villa has a history of hundreds of years and has experienced wars. When the German army invaded Poland, the owner of this villa was a Polish businessman.

During the German air raid on Poland. The businessman took his family and fled Warsaw and took refuge in this villa. So the above mentioned that this villa has a basement.

And I can also prove this in the later sewer pipeline distribution map. Cobain nodded.

"We just found out about this." Lin Rui nodded, "Is there anything strange in the distribution of sewer pipes?"

"Look. This is the original distribution map of the sewer pipelines, and here is the earliest part. From here you can see that the drainage system at that time was not as dense as it is today.

At the least, there are only a few.

But you should be able to find this location, which is where the villa is located today. When the drainage pipe was repaired here, the direction changed.

This shows what? It shows that this building has an underground part. Therefore, the drainage pipeline is repaired here and must be changed.

From the later distribution of drainage pipes, underground pipes became denser and denser, but by the time of this picture, two new pipes were added.

This is when the Americans took over the villa and remodeled it.

Judging from the location of the underground drain, we can at least be sure that their basement has also been deepened, and the original basement level has been extended to at least two floors. "Cobain pointed at the drawing and explained.

"That is to say, this villa has at least two basements." Lin Rui nodded.

"That's right and this basement has expanded a lot from the original scope. You can clearly see the modification of the drainage pipeline from this picture.

Since the basement is lower than the water level, the sewage pipe, that is, the municipal sewage pipe, is higher than the ground of the basement. Generally less than one meter below the ceiling of the basement.

If you want to install a bathroom in the basement, you must consider how to pump sewage to it against gravity.

So they need sewage lifts, water storage tanks, and special water pumps. And after my investigation, when the Americans were renovating this villa, they did purchase such a batch of things.

The seller is a local manufacturer in Poland, they provide similar basement construction solutions.

So I hacked into the database of the Polish manufacturer and found some of their construction materials that year. "Kebain said triumphantly." From this I got the floor plan of the converted basement. "

"The floor plan of the basement?" Lin Rui said overjoyed.

"Yes, although the Yankees destroyed most of the building materials. But they did not expect that the building subcontractors below would also have the habit of keeping the materials.

So the floor plan of the basement, despite the setbacks, I got it. Cobain nodded.