Strictly speaking, this is not a sound, but a "sound wave."
The frequency of sound waves that can be received by human ears is about 20 to 20,000 Hz. The range of physiological conditions varies, although this range is generally not exceeded.
For most humans, this sound is "not there."
But not hearing does not mean it does not exist.
Many animals can receive much more widely than humans. For example, dogs, cats and dolphins, receive hearing frequencies 7 times more than humans. Before catastrophes, many animals have specific behaviours because they receive an infrasound or ultrasonic wave humans cannot receive.
The sound of monsters is just outside the range of human reception.
When Ah Ye is about to be bitten by the monster, Black eggs emits ultrasound far beyond the human hearing range! His voice was so terrible, sharp teeth had not touched grandpa's scales, the monster that came over to take advantage suddenly stopped, black liquid sprayed from its body surface, the liquid quickly turning into black powder. The monster fell straight down from the air, the round body quickly shrank into a shriveled disc in three seconds.
More monsters in the dark rushing to eat, like it, suddenly stopped, the next second they died.
Outside the corridor, the patrolling administrator suddenly fell down, vomiting then he was temporarily unconscious.
Vomiting and fainting were still basic symptoms, 150 meters outside, a staff member who was walking in the garden bleeds, the heart suddenly stops. She fell directly to the ground.
Invisible sound waves penetrated the walls, crossed layers of wood, causing people to fall to the ground wherever they were.
There's no way to resist, everyone had fallen.
A middle-aged man who respectfully served the Uncle ancestor at the bed, listening to him, He hadn't heard any sounds yet, He also fell cold onto the ground. The thick red carpet with rich and colorful flowers broke his fall.
The huge courtyard, originally quiet, became even quieter.
No life, no insects, birds calls, dead silence.
It seems... everyone has fallen.
However, at this time, a pair of white jade feet suddenly stepped down.
No, its not appropriate to use white jade to describe it. The feet are really white, there is no trace of blood in white, unlike jade-like radiance, its more like pale and hard stone.
Feet fell silently onto the carpet, he stood up.
Pale, slender fingers, like the feet, gently opened the bed, a pale, thin face appeared behind them.
Looking at the middle-aged man lying on the ground, the man stepped over his body and walked towards the door.
A taupe sparrow laid quietly on the long wooden corridor outside the door, motionless.
He went past several people who'd fallen on the ground.
No stops, he walked straight in the direction of the southwest corner.
Wreckage of two helicopters scattered across the grass, suddenly fallen from the sky. When they fell, they had collapsed half the wall. A short period after the crash the man arrived, one of the aircraft’s broken propellers was still there, turning, a squeaky twisting sound is the only sound left.
Not long after, the inertia from the propeller rotation was exhausted, the final sound disappeared.
Turning to the surrounding scenery, the man continued to move forward, his footsteps maintained the original frequency throughout.
Not too fast, not too slow.
Maintaining his pace, he walked straight into the building under the layers of wood. At the end on the left side, there was a downward extension of steps. The steps were so dense, he could not see ahead for a time.
He stepped down the stairs.
When his whole person completely entered underground, the surrounding air was completely different from the surface! Along with screams beasts and slams of heavy objects hitting walls, the air seemed to be compressed by layers, there is a sense of turmoil in the tunnel.
When his feet left the last step, stepping onto ground again, the space in front of him was vascularized, splitting into several deep, bottomless roads.
The roaring percussion of beasts echoed into his ears from the "blood vessels" of these walls. Among these voices, a baby's sharp cries was particularly eye-catching, his ears listening for a moment, the man turned to the third road on the left hand side.
Key recovered from the man fainted at the door, the man opened the door at the end - the crying, came from here.
He pushed the door open.
When the door opened, it unsettled a certain moment of static magic: fine black powder permeated in the air suddenly fell.
Like a black rain.
Black powder is everywhere in the room, but the man is completely unaffected, white clothes are clean as new.
Eyes as dark as stagnant water hook into the dark, the baby cries are from there.
In the darkness, two faint "lights" of wildfires hovered there, flat.
The man opened the invisible light switch on the wall, the black monster hidden in darkness became visible in front of him.
It was an unusually petite monster, squatting on a monster covered in gray-white scales, if he didn't observe carefully, he wouldn't see it or even find it.
The cry came from its mouth.
Staring at the little monster, the man picked it up with one hand.
The claws of the little monster tightly clutching the body of the white monster underneath, but how does this strength contend with the man's strength, accompanied by serval falling white scale, the little monster was torn from the white monster by the man. .
Scarlet mouth opened zhang zhang, the little monster screamed from his mouth, a sound only monsters could hear.
Scared white ringed eyes met a pair of black eyes like dead water, a few drops of water ran down the man's wrist and landed on his naked foot.
Water leaked out of the strange paper bag wrapped little monster.
After carefully identifying the dirty paper object on the little monster's waist, the man found incredibly it was...
A diaper? !
This monster was actually wearing a diaper?
Then the liquid leaking from its diaper is -
A hand flick, the man instantly released the little monster in his hand.
Slamming onto the ground, the dirty little monster quickly re-crawled to the gray-white monster.
Quick and sophisticated, it hid itself under the gray-white monster's long hair.