Of course, Chen Chen is no stranger to this scene.

In the daytime, he had just seen this scene, a female corpse hanging in the room, there were a lot of blow marks on the wall, and when he came to the room of the next resident, he saw that there was a deep impact mark on the common wall.

That trace, about twenty centimeters in diameter and about five centimeters deep, was much deeper than the impact mark in front of him, but Chen Chen was sure that the source of these two marks was the same.

Because the deeper marks I saw before were more like they were formed by a long-term impact, and now this trace has only just begun to impact.

Coincidental?

Still is......

At this moment, he seemed to understand why there were marks on the walls of the room where the female corpse had been hanged with her ears and marks of being hit with a baseball bat.

Perhaps, before her death, the female corpse also noticed this hollow and strange impact sound in the desperate and deep night......

A haze flashed in Chen Chen's eyes.

He looked around, if there was anyone or an animal hiding in the room, he would definitely be able to find out when the black knight came in just now, because Chen Chen could be sure that the impact sound stopped at the same time as the black knight opened the door.

The teachers' dormitories are all single rooms, as long as you open the door, the entire dormitory can be seen at a glance, if it is a human or an animal, the black knight will not be able to find it.

In other words, the speed of that thing was so fast that it could disappear directly into the room the moment the black knight opened the door.

Thinking of this, Chen Chen came to the back window of the dormitory again, he gently touched the window, the window was also pasted with newspaper, and the window lock was locked from the inside, there was no situation where people or animals escaped from the window.

Since there is no possibility of escaping, what will it be to avoid the black knight, avoid the thermal imaging vision of the PK armor, and even avoid the detection of the artificial intelligence close to Xiao X?

What is there that hits the wall in the middle of the night?

All this is almost completely inconsistent with the common sense of physics, Chen Chen narrowed his eyes and vaguely understood something.

"It turns out that I have been targeted by 'strange events'."

Chen Chen frowned, he didn't expect that he had been able to prevent trouble before it happened, and he was even cautious about reading the information of the Doomsday Survival Team, but he didn't expect that he had been infected with the 'Strange Event'.

And what's even more difficult is that this kind of strange event is not in the record of the data, that is to say, Chen Chen needs to personally understand this strange event, summarize the law, and then seek that trace of vitality in the law.

Thinking of this, Chen Chen took one last look around the dormitory, then turned around and left, returning to the team leader's bedroom.

Lying on the bed a little tired again, although Chen Chen's brain was still aching, he did not continue to sleep, but thought silently.

"X-112, help me document a new weird event."

Chen Chen said in a low voice, "The name of the strange event is called: Impact Sound. ”

X-112 immediately responded, "Recording has begun. ”

Chen Chen nodded, "The information produced by this team before is still too general, I think that if you want to have a more comprehensive understanding of strange events, you need at least four categories, namely: phenomenon characteristics, infection symptoms, infection conditions, and risk assessment. ”

"The phenomenon of 'impact sound' is characterized by the fact that after a human being infected, there will be a burst of impact sound next door, and if you go to the next door at this time, you will not see anyone, only the physical impact marks on the wall."

Chen Chen thought for a moment and added, "It is not clear whether the triggering conditions of the impact sound will only be triggered by the infected person staying in the room for a long time, or whether it will be triggered because of the late night?" And how long exactly will this impact last, and what will happen if it lasts too long and the wall does crash through......"

"What if I change rooms?" X-112 asked suddenly.

"It's useless to change rooms."

Chen Chen shook his head, "It can be seen from the room where the female corpse was hanged that the female corpse had two bedrooms before her death, it is obvious that she once heard the impact sound on the wall of one bedroom, and after noticing that something was wrong, she seemed to have changed to another bedroom, but the impact sound sounded on the opposite side of the wall of this bedroom." ”

"No wonder there were marks of impact on the walls of the two bedrooms opposite her......"

X-112 suddenly understood, "If changing rooms doesn't solve the problem, then what do we do?" ”

"I don't know."

Chen Chen shook his head, showing a solemn expression for the first time, "This is something I have never been exposed to, in fact, since just now, I am ready to die." ”

"Your Excellency Commander......"

X-112 stopped talking.

"Well, there's not much to say."

Chen Chen waved his hand, "I have long known the truth that if you want to wear a crown, you must bear its weight, and if you want to gain strength from the USB flash drive, sooner or later you will be attacked by the USB flash drive, but I didn't expect this day to come so quickly." ”

"Maybe this weird event doesn't kill anyone?"

X-112 persuaded, "After all, the female corpse died not because of the sound of the impact, but because she hanged herself, which means that it is very likely that this strange event is not very lethal." ”

"It's just wishful thinking."

Chen Chen asked rhetorically, "Perhaps, the impact sound will last for several nights, and the longer it lasts, the more it will collapse the emotions of the infected, just like the Basilisk pattern, and the sound itself may be lethal." ”

"And now maybe the power of the impact sound is not revealed, but it doesn't mean that it is not threatening, in fact, in my opinion, this kind of strange incident has no logic at all, so we must not judge each other with common sense, otherwise we will definitely die a miserable death......"

Hearing Chen Chen's rhetorical question, X-112 fell completely silent.

"At present, it seems that the characteristics of the phenomenon of the strange event of 'crash sound' have yet to be explored, and the symptoms and conditions of infection are not known, and even the risk assessment has no clue because of the lack of sufficient clues."

Chen Chen said, "So, next I will lie on the bed first, to see if there will be a crash sound tonight, if the impact sound is heard again, it means that the impact sound is related to the length of time I stay in the room, otherwise, it means that it has nothing to do with it." ”

"And I remember that during the day, in addition to me, the three black knights also saw the hanging female corpse, so could it be that the three black knights were also infected with this strange event?"

After thinking about it, Chen Chen added again, "X-112, let the black knight who is in charge of guarding me go to another dormitory, just find a room at random, don't go next door to me, I'll see if there will be a crashing sound on his side." ”

"Understood."

As X-112 agreed, the black knight turned and left.

Seeing the black knight leaving, Chen Chen nodded and asked again, "Didn't you notice?" This kind of weird event is actually quite interesting, and the possibilities are almost endless. ”

"For example, if I put a camera next door, what do you think I'll be able to see? Or what happens if I move to a room made entirely of glass? And if I'm in a separate room with no next room around, will that knock still ring? ”

Speaking of this, a smile flashed in Chen Chen's eyes, "In short, in this strange incident, I can make many, many attempts, just like a rigorous experiment, and this kind of experiment is my best ......."