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"Most of the people in the research institute are meticulous. Even if they occasionally meet a few scientists with strange personalities, most of the habits they have developed in the real room for a long time make it easier for them to remember and follow various 'rules' than the average person. If you usually always pay attention to everything, that kind of person will probably not stay long in the real yàn room and will have to break this and that, and if you are lucky, you may have to get yourself bruised. ”

Evan tried to accidentally knock over a container in Suzune's real room, and the liquid that spilled from it instantly made a bottomless hole in the floor of the research institute, which was claimed to be able to withstand a nuclear attack. If Evan's luck had been a little lower at that time and that liquid had splashed on her, even if she had the gift of a vampire immortal, she would have to be quite painful for a while, which made Levi feel distressed as well.

"Well, there are also people who are seriously injured and admitted to the hospital because of negligence, and I have heard the director talk about it before."

Khan, I didn't expect that someone like Evan really had another world, but that person didn't have an immortal body like Evan . Almost everything in the real yàn room can be used as a killing tool with a little use, and if you don't follow the rules of the real yàn room, it is really not much different from a chronic sudden suicide.

“…… That's why people who often go in and out of the real yàn room pay extra attention to the various rules, such as the sign you just read the words written on it. But how many ordinary people living in a peaceful world will be meticulous at all times? Especially the people of the countries on the earth are more and more pursuing the quality of life and paying attention to the joy of life, so that they are careful every day to live a life that cares about that, and even take a staircase to look up first, how can they stand it? ”

"I see, so for those who are not careful, do you have to design a device that doesn't matter even if they forget to close the door?"

It seems that although Tio rarely goes out and has less contact with people outside the small circle around her, she obviously has much more 'common sense' in her head than some girls around Levi, and as long as she corrects her thinking in the wrong direction a little, she can immediately grasp the point.

"Yes, the device you're talking about is the door closer on top of the door."

"Door closer?"

Hearing Lévi say this, Theo tilted her head up and stared upward, something like a curved metal strip that had already made her a little concerned before. She tried to push the door open a little and then retract it, and it was actually two pieces of metal held in place at the intersection point.

"There's a hydraulic press in the upper part of the door frame against the door closer...... Do you know about hydraulics? It's something like a spring. ”

Theo nodded in understanding, but she didn't speak, making it unclear if it was something in her own world, or if she had learned it since she came to Earth.

"When the door opens, the door closer starts working, creating a force that pulls back, and as soon as you let go, the door is pulled back and closed by the force of the door closer, and then it is locked again. This will make the door a little heavier, but at least as long as the door closer is not broken, it will be able to keep the door closed every time it is pushed open. In the unlikely event of a fire, the fire will burn the entire building through. ”

"I see."

Theo finally had a satisfied expression, though the changes in her face were as subtle as Eve's. But Levi is a man who can see through even Yuki's self-proclaimed face that does not have the ability to express himself, and this girl is just a little cold, how can she hide from a battle-hardened warrior?

Levi was relieved to be able to satisfy her. Instead of wasting more time by entanglement, it is better to explain it in detail to save time and effort.

Look, it's a long story, but Levi isn't as slow as a snail, hasn't it been more than two minutes?

Theo was a little happy to learn something new, but she didn't forget why she had Levi bring her here. She's not a student who comes to teach science outside of school, but a self-appointed investigator (self-styled) who goes to a mysterious research institute and a processing plant to secretly investigate. She tugged at Levy's coat and nudged him again, meaning he could continue to lead the way. Levi immediately understood, and began to descend the stairs as little as he could, without making too much noise or affecting it.

The plan had already been made to go to the production hall on the ground floor to see what the final output of the building would be, so on the way down the stairs, the fire doors on each floor were as red as the top floor, and Levi and Theo did not open them. And they walked the firefighting staircase, in order to evacuate the crowd as quickly as possible in the event of a fire, naturally it would not make a twist and waste time and increase the distance. The two of them circled around the staircase and kept going down, and it didn't take long for them to reach the end of the staircase, and the right side of the door frame was spray-painted directly on the wall, telling them that this was the first floor of this building.

"No basement?"

The staircase didn't go any further, and Theo poked the ground twice with the magic guide in her hand, a dull echo that seemed to nod in answer to her question.

"Not necessarily."

Levi pressed half of his body and ears to the door to try to hear what was going on outside, and casually answered Theo's questions. He thought to himself that this girl had probably lived underground for a long time, so he took it for granted that everything would open up space underground. But this guess is really true.,Especially in the school city, which pays attention to science and reasonable.、Modern cities that pay attention to maximizing the use of a qiē,Basically, there are few buildings without basements.。 Even in places where there is no need for an underground warehouse, such as a house, there is an underground parking lot designed to save space. The same is true of the building they are staying in, as the original Tio's drawings indicated that there was an underground section for parking and unloading vehicles. On the one hand, it is to save space, just like in residential and office buildings, and on the other hand, it is probably also due to the fact that some factories may produce things that need to be protected from light and dust as much as possible. Although the packaging will be done before transportation, and the loading location will be set under the ground where the wind and the sun cannot be seen, it can be regarded as an extra layer of protection. Who thinks it's too safe and doesn't feel like it's exciting? At least the people in the factory and the scientists in the institute are not expected to be so idiotic, and they have nothing to do with themselves.

"The purpose of this staircase is to facilitate the escape of people in the event of a disaster, and if there is a way to go underground here, wouldn't it be easy for people who are fleeing in a panic to get the wrong direction? If you think about it, the fire behind you is chasing or the house is about to collapse at any time, how can people who desperately want to run out in this situation have the time to distinguish which road leads where? There's a saying on Earth called 'panic and don't choose the right path', and that's what it means. ”