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Looking at the lack of characteristics in front of him, a corridor that was completely white, Zhang Xiao seemed to have thought of something, and his eyes moved, looking up and down and left and right.

"Is it fun to use illusions?"

In the construction industry, modern times also sometimes use illusions, which are generally used to increase the sense of space and "change" the spatial structure so that the building looks much larger than the actual area, mostly using mirrors and lighting.

However, in fact, the example of illusion being used in buildings had existed earlier, but at that time it was not to satisfy some "useless" sensory experiences, but to create secret rooms and secret passages.

Among the noble castles popular in medieval Europe, there is a common "architecture magic" that conceals some architectural spaces through visual deception.

To give the simplest example, suppose that one side of the third-level corridor of a building has seven doors corresponding to seven rooms, and each room has a window. Looking from the outside of the building, you will see that the seven windows are equally distanced from each other, and everyone will subconsciously think that this is a reasonable building.

But if you look closely inside the building, you will find that there are two "adjacent" Room 4. The windows of Room 5 are not in the middle of the room, but are close to the wall. The windows of No. 4 are close to the walls of Room 5, and the ones of No. 5 are close to No. 4, which is completely inconsistent with the scene seen from outside the building.

This is actually because Room 4 and Room 5 are not adjacent, and there is also a secret room hidden in the middle without windows and the door is hidden.

This seemingly obvious loophole is actually rare, and it uses visual illusions and human inherent cognition.

Of course, the truly brilliant castle secret rooms have more complex and exquisite hidden methods. They are not all so straightforward. They can be seen through a little care. They are cleverly hiding the existence of secret rooms through different architectural structures such as walls, corridors, stairs, terraces, etc., but the core is unchanged, and it is still to use illusions to hide some architectural space.

The same is obviously true for the "non-existent" floor in front of you.

"Is it a secret floor squeezed out by reducing the height of adjacent floors?"

As he gradually deepened, Zhang Xiao had observed the surrounding area more than once. If this was the case, then the person who designed and built this place must be a master of architecture.

Because he did not find any abnormal traces at all, there were no clues on other floors he had ever seen. It can be seen that the "non-existent" floor design and construction are so exquisite that it is amazing.

But at the same time, another bad idea emerged in Zhang Xiao's heart.

"...or, this is actually the ability of a substitute?"

Thinking of this, Zhang Xiao frowned slightly. He might not have thought about this at first, but now it is not impossible to suddenly appear.

The substitute has a variety of strange abilities. Not to mention an extra level, even those who can travel through time and space are not lacking.

It is really dangerous to be in this world with special abilities. If you don’t pay attention, you will fall into a dangerous situation. If this place is really created by the ability of a substitute, then he will now fall into someone else’s stomach, and life and death are involuntarily caused by others.

But after thinking about it, Zhang Xiao let go of his worries. It was not that he thought about whether this place was a substitute ability, but because such a type of substitute would either not be very powerful and not very lethal; if the lethality is strong, there must be extremely strict rules and restrictions.

Watching things happen, not acting rashly is the best choice now.

As the two of them took a few more steps, Xicun suddenly stopped. Zhang Xiao was stunned and noticed that the corridor with the white wall in front of him was not as long as he imagined and had reached the end.

You know, a few steps ago he thought the corridor was still very deep, but now he found that the corridor was at least half shorter than expected.

After looking closely, he realized that the end of the corridor was exactly the same white wall. A white door that could hardly be seen from the wall was embedded in the wall.

"arrive."

Nishimura reached out to signal the white door in front of her. All kinds of emotions had been removed in her eyes, and she became very calm, and she seemed to be no longer afraid.

Zhang Xiao knew why. He glanced at the upper left corner of the wall in front of him. There was a very inconspicuous small hole. I don’t know if it was a monitor or a weapon hole, but it obviously brought a lot of confidence to Nishimura, making him no longer worried about his safety.

The corners of his mouth were gently raised, revealing a hint of undetectable smile, and the expression on Zhang Xiao's face flashed.

Of course he would not tell Nishimura kindly that he was actually under the threat of his knife at any time.

In order to prevent possible substitute messengers, although Zhang Xiao did not materialize the ghost head sword, he certainly would not be without any precautions. He kept clenching his palms and pointed his fists at Xicun. The distance between him and Xicun was never as long as the ghost head sword.

He didn't treat Nishimura as a hostage, but this guy is also an enemy in his eyes. So if there is really something dangerous, it would be impossible to get rid of an enemy first, let alone, this would be very likely to cause chaos and give him an opportunity to take advantage of it.

Zhang Xiao glanced at Xicun and said nothing, saying nothing, "Open the door."

Nishimura frowned, not knowing if it was because Zhang Xiao had always had a good attitude. He couldn't help but say, "I don't think you look like a bad person either. You'd better explain your purpose clearly, otherwise the people above will not let you go easily."

After saying that, he didn't look at Zhang Xiao, turned around and reached out to press somewhere on the white wall. Zhang Xiao looked at Xicun in surprise, until he didn't expect that he would suddenly say this.

After a while, the inconspicuous door on the white wall closed in with a "click" and then slid to the side, looking very light and high-tech.

Xicun did not hesitate and walked in as soon as the door opened. Seeing this, Zhang Xiao didn't care about observing it and followed it with vigilance.

He still kept a distance from Nishimura, and was not shaken by Nishimura's kindness.

To a certain extent, there is not much difference between Zhang Xiao and the reincarnation people he has seen. For himself, no one cannot be killed...at least in this world.

If needed, it is the case whether it is JoJo Hokki Xu Lun who has seen before or Nana who seems to be a little loli, not to mention the stranger Nishimura who has almost just met before her.

...It is not a pity that the ghost head knife has such an evil side.

The door was not tall, almost only about 1.9 meters away. I don’t know if it was because Neon people were short. As soon as Zhang Xiao entered the door, he noticed that there was a person standing on one side of the door. He turned his head and looked at him. He was now a man in a suit, with black ears and sharp eyes, so he didn’t look at it anymore.

He thought, this was probably a bodyguard.

Nishimura did not look at the man, but walked straight in. Zhang Xiao followed him and quickly looked at the layout and people in the room.

The room was not big, there were only 4 people. Except for the bodyguard next to the door, the other three were sitting opposite a wall. Except for the wall where the door was located, almost all the other three walls were screens, which looked like a surveillance room, but this would never be the surveillance room of the hospital.

Zhang Xiao just glanced at it casually and felt something was wrong, because he obviously saw several offices that were obviously not decorated with each other, which were probably the room of the leader in the hospital.

But no leader will let others monitor him.

Seeing this, Zhang Xiao observed it more seriously. After a while, he recognized more than one surveillance screen that would never be allowed to be installed: wards, lounges, locker rooms... and even bathrooms.

"This is……"

...

...
Chapter completed!