Is there no secret door to the basement? Could it be that I guessed wrong! Or... or is there something I missed?

Lu Shan searched back and forth on the first floor several times, but found nothing, and couldn't help falling into deep self-doubt.

He stroked it again, and then he felt... his inference should be correct. According to common sense, if there is really some secret military laboratory here, then... these set up in the building should be These are things that are not very important, and most of the laboratories that really need to be kept secret, it is safer to build underground.

Then... Why did you find the entrance of the underground laboratory after such a search? Could it be that... this entrance is actually not in this building? It's on... the third building?

This may also be there, and it is not small.

Who said... the underground laboratory must be under the ground laboratory? This military camp is so big, as long as you set up a concealed exit wherever you want, wouldn't it be more difficult to be noticed by others?

If that's the case, it's really not easy to find! After all, the area of ​​this barracks is so large, if he doesn't have any clues, it would be unrealistic to search the entire camp.

So it seems...I can only find a way to catch a few live mouths, and then try to interrogate it! But... I saw that all the soldiers in this barracks seemed to obey orders. I was afraid that it would be difficult to ask such secret things from them.

And Lu Shan doesn't like torturing others, playing forcing confessions and the like! But if there is no persecution, will anyone be willing to confess?

But if he doesn't force a confession, he can't really dig the entire army camp three feet away, right?

Just when Lu Shan decided to give up and continue searching in this building, he suddenly stopped... His eyes glanced at the laboratory on the left, and then... he looked at the one on the right side of the corridor. When I got up to a laboratory with a similar layout, my eyes narrowed slightly...

The laboratories on the two sides look similar, um...in fact, the layout of the laboratories on this floor is relatively contrasting.

Since most of these laboratories face the corridor with transparent glass walls, when Lu Shan walks through the corridor, he can almost completely see the situation in both laboratories.

In order to find the entrance of the underground laboratory that may exist, he has walked back and forth on this building many times.

He hadn't noticed it at first, but when you think about it carefully, you will find...The area on the left side of the two laboratories that should be completely opposite is actually smaller than that on the right side!

Although this area is not too small, but... with Lu Shan's eyesight, it can be roughly judged that this area should be a few square meters smaller.

Speaking of which... the area of ​​a laboratory here can be more than 100 square meters, and there are about seven or eight laboratories on each side, adding together... the total area of ​​the laboratory on one side is about one About one thousand square meters.

If it is someone else, it is definitely impossible to see which side is missing a few square meters, unless it is measured carefully with a ruler, and accurate calculations are required, or this conclusion can be reached.

And Lu Shan can roughly analyze it with the naked eye...This is also related to his special understanding of architectural design after taking over the construction company of the James Group some time ago. In addition, his eyesight is far beyond ordinary people, and this secret has been discovered by accident!

The area of ​​the laboratory on the left and right ends of a building must be the same. This is like aligning a piece of A4 paper from the middle and folding it in half. Then the area of ​​the paper on both sides must be the same, even if there is an error, it should be extremely small.

In order to verify his judgment, Lu Shan specially walked the corridor on the first floor three times from beginning to end, and finally confirmed...The layout of the laboratories on both sides of the corridor on the first floor is exactly the same, but the laboratories on the left are indeed less. A few square meters!

So... how could these square meters disappear out of thin air? There is only one possibility...that is, the thickness of the wall in the laboratory on the left exceeds that in the laboratory on the right.

If this is a house built by the construction team of Yeluzi, it has not been carefully designed, and the wall on one side is generally thicker than the other side... this may be possible.

But the problem is... this is a military camp! The construction team that can build a building here can't be the kind of wild way, right?

Then the question is...Why is the wall of the laboratory on the left thicker than the one on the right? Is the thickness of each partition wall thicker than the right side, or...is one of the walls particularly thick?

So... Lu Shan immediately came to the conclusion that the entrance to the underground laboratory is in this building, but not necessarily on the ground, but in the wall! And... the real entrance may not be on the first floor, but may be on the second or third floor...

It's just that since it leads to the underground, no matter how many floors the entrance is, it will definitely pass through the first floor. So... the wall where the secret passage is located must be thickened so that people can pass through the underpass. Is not it?

After figuring this out, the next step is simple!

Then Lu Shan began to search again in the laboratory on the left, and his purpose this time was very clear, which was to strike **** each partition wall.

Sure enough... When I checked into the third laboratory, I suddenly discovered... When he hit one of the walls, the sound he made was different from the other walls, and there was an empty echo.

Haha, it must be here!

Lu Shan was energetic, and then he shook his fist and slammed into the wall.

He had already checked before...There shouldn't be any mechanism on this wall that could open the secret door, and this wall is also tightly connected, there should be no secret door.

That means...this should be another possibility he had previously guessed. That is, the entrance of the secret door is not on the first floor, it is just the area through which the secret passage passes.

If Lu Shan followed this direction and went to the upper floors to check each other, it should not be difficult to find the entrance of the secret door.

But then why bother? Anyway, as long as you make sure that the secret path is behind this wall, won't you find the secret path as long as you smash this wall?

Lu Shan's first punch hit it, and countless cracks opened on the wall, and then the second punch hit it, and he heard a "bang", and suddenly the wall collapsed and a large area was exposed. A vertical shaft with two meters in length and width.

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