"boom!"
He just casually tapped the trap ground outside the cylindrical metal prison, but who would have thought that the entire prison would shake!
“Bing!” Coco jumped onto his shoulders twice, screaming in fear, “Bing?! Bing!”
It seemed to sense some danger and looked very panicked.
"What happened?!"
“Earthquake?!”
“Go back quickly!”
In the corridor outside the door, the voices of Wen Guixin and the other two could be heard from the depths, along with the sound of hurried footsteps.
But what made Xu Xin feel unusual was that despite such a big commotion, the giant insects and beasts in the prison outside did not make any movement at all.
Even the one or two cries that could be heard from time to time were gone!
They all seemed to be afraid and dared not make a sound at all.
What is going on
what happens
At this moment, something unexpected happened on the screen.
He saw that the originally flat ground outside the prison where he had just clicked suddenly deformed!
The part he clicked suddenly sank downwards, while the circle around it began to bulge upwards and gradually wrapped around the middle!
That's right, the ground seemed to open a big mouth at the place he just clicked, and wanted to swallow everything on that place!
Damn, the ground is alive!
Moreover, it is possible to control deformation by using screen tension? !
What kind of creature is this thing?!
At this moment, the deformation of the soft ground outside the prison suddenly became faster. In an instant, the big mouth suddenly closed, and the entire ground quickly returned to its flatness.
But at this moment, the vibration under my feet became even more violent!
At the same time, he heard a voice.
“——”
A particularly low and frightening voice clearly reached his ears.
“——”
His brows suddenly furrowed, his breathing became heavy, and he felt dizzy, nauseous, and short of breath.
This was the first time he had heard such a voice. It was too low and too uncomfortable!
“——”
Xu Xin covered his mouth, suppressed the dizziness and nausea, and reached out to hold on to the wall.
It hurts so much!
"Oh oh!" Coco became even more flustered. She dived directly into Xu Xin's arms and began to tremble.
Xu Xin held Ke and slowly sat down against the wall.
He opened his mouth and breathed in deep gulps, his breathing was very rapid, his head felt like it was about to explode, and his internal organs seemed to be under attack.
It hurts so much!
Was it this sound that caused it?!
What a terrible sound!
The sound is coming from... underground?!
… He seemed to have guessed the source of the sound!
This is... the huge creature under the prison, screaming? !
The giant, soft creature that they had stepped on countless times was screaming!
Its cry was long and low, as if it carried strong dissatisfaction.
Fortunately, on the screen, there was nothing special about the ground outside and it was still very flat.
However, because the scene on the screen is a simple linear perspective, the actual situation cannot be seen.
Finally, the sound stopped and the surroundings gradually became quiet.
Xu Xin rubbed his head, his breathing trembling slightly, and tried to calm himself down.
Coco lay in his arms, trembling slightly, and let out a muffled "嘤..." sound.
"What happened, Brother Xin?!"
Zhao Xiaochuan rushed into the control room first.
He was so fast that he ran back ahead of the two men.
His face was pale at this moment, and it seemed that he was also affected by the voice just now.
Xu Xin stood up against the wall, rubbed his head which was still a little dizzy, and hammered his heart which seemed to be half a beat slower than before and a little sluggish, and said: "I will explain it after they are all here. How are you? Did that sound just now have a big impact on you?"
"Sound? What sound was there just now? But just now I suddenly had a headache and felt nauseous, and my body felt uncomfortable everywhere." Zhao Xiaochuan swallowed his saliva and then dry heaved. "I suddenly felt very uncomfortable, and I don't know why..."
Xu Xin was slightly stunned and asked, "Didn't you hear the sound just now? It was like the sound of some creature calling."
Shouldn't it
Even though he had amplified hearing, the sound was still very loud.
Even without hearing amplification, they should be able to hear sounds of that size, right
"Ah? What creature is calling? No?" Zhao Xiaochuan shook his head in confusion, then rubbed his head and said, "I really didn't hear anything?"
"But you feel uncomfortable." Xu Xin raised his eyebrows slightly and asked.
"Well, it's just... suddenly feeling very uncomfortable?"
Xu Xin took a deep breath.
This sound must be real.
As for this sound, only he could hear it, and Zhao Xiaochuan didn't hear it...
He probably knew why.
Perhaps it is because this kind of sound is something that ordinary people cannot capture under normal circumstances.
Infrasound!
Infrasound refers to sound waves with a frequency of 0.0001Hz-20Hz.
The human hearing range is 20-20000Hz.
This is a sound wave that is beyond human hearing!
As for why Xu Xin could hear this voice...
It’s because he now has enhanced hearing!
The hearing enhancement even expanded his auditory frequency range!
This is why he could hear sounds that should have been inaudible to human ears no matter how loud they were!
The conditions and symptoms they just experienced are basically consistent with the hazards of infrasound.
Infrasound of a certain intensity can stimulate the human nervous system, causing fear, mania, dizziness, nausea, vomiting, difficulty swallowing, loss of appetite, fatigue, weakness, dizziness and tinnitus.
Moreover, infrasound waves of certain frequencies are similar to or even identical to the vibration frequencies of human organs, and can easily resonate with human organs, causing great harm to the human body. In dangerous cases, they can even cause death!
At the same time, infrasound waves have a low frequency, decay very slowly, and have a long wavelength. They can diffract around certain large buildings, and some infrasound waves can even circle the earth for several weeks.
On Earth, sonic weapons are made based on the principle of infrasound.
This is a very scary sound that can kill people without them even noticing.
Unexpectedly, this soft big guy under the prison, just the sound it makes, is a deadly weapon and can pose such a huge threat to them!
"So, what's going on, Brother Xin?" Zhao Xiaochuan's expression looked a little better at this time. "It's not just us. The bugs outside are also acting strangely, huddled in the corner and not moving. Even the giant beasts are lying on the ground, not moving, as if they are afraid of something."
"I was just careless."
Xu Xin rubbed Coco's little head, who was still shivering in his arms.
The behavior of the underground creatures in the prison coincided with his guess.
If the sound just now was the sound of a giant beast, then it is normal for these underground creatures to look frightened.
They were locked up in a cell and couldn't run away, so there was nothing they could do except shiver and pretend to be dead.
At this time, Wen Guixin and Wang Lei also arrived.
"What happened?"
"Xu Xin, did you touch any button? Hey, why is the screen on?"
The two walked into the control room and saw the turned-on screen at a glance.
Wen Guixin immediately walked to the screen and looked at it, then turned to look at Xu Xin and asked, "So, what button did you press just now? I almost thought that this prison was going to be launched like a rocket, and I was dizzy with rockets!"
The faces of the two men were also a little pale. After all, they were also affected by the infrasonic attacks just now.
Although they cannot hear the sound, the impact is real.
Fortunately, the people present were not ordinary people and the metal prison also blocked most of the sounds, so the seemingly angry shouts just now did not have much impact on the people present.
After recovering, I just felt a little uncomfortable.
"Let's go out and take a look. I'll tell you as we go."
When they walked out of the passage and looked down at the soft ground outside, Xu Xin had already explained to them what had just happened.
"That is to say..." Wen Guixin pointed to the soft ground below and said in disbelief, "The reason for the vibration just now, and the reason why we are uncomfortable, is all because of this big guy below!"
“Isn’t this… a little scary…?” Wang Lei stared at the soft ground below and swallowed.
"Just the screaming makes us... so uncomfortable? Moreover, we are still in the prison. If we were outside and were directly attacked by the sound waves..." Zhao Xiaochuan couldn't imagine it.
The ground outside and below had returned to calm at this time. It was completely invisible that the ground had just been deformed and had opened a "big mouth".
The four of them looked at each other.
They still haven't figured out what they are going to do, but the dangers are becoming clear one after another.
This place is too dangerous!
As expected of a facility in the underground world...
"Ying..." Keke finally recovered. She raised her head from Xu Xin's arms, glanced at the ground below, and buried her head again, crying out in a muffled voice, "Ying!"
Coco probably knew from the very beginning that this was the roar of the giant beast.
etc…
If it's a call...
Maybe, what does it mean
"Coco!" Xu Xin held Coco in front of him.
"嘤?!" Coco was startled when she was suddenly lifted up.
Feeling insecure being held up, it immediately started to struggle: “Boo-hoo-hoo!”
"Keke, could you hear that cry just now? Does it have any meaning?" Xu Xin asked, staring into Keke's eyes.
But if it is possible to understand the words of other creatures, then what is the meaning of that voice just now...
Coco stopped struggling, wagging her big tail twice, blinking twice, and nodding her little head: "Bing!"
I can actually understand it!