Three days later.
This was a dark underground cave environment with a dense arrangement of stone pillars. Ultrasonic waves were constantly emitted from within, indicating that there was a group of underground stone bats living here.
In the Endless World, most creatures relied on their eyes to sense things, and the most common way for the eyes to sense things was through light.
Even in the darkness of the underground, due to the existence of the laws of light in the world's origin laws, there would still be eyes that could sense things. The dark underground environment was not the end of the evolution of light-sensitive eyes.
Of course, in places with sufficient light, there would often be extreme myopia and perceptual defects.
However, when the Origin of Darkness fused with the darkness and engulfed the approaching light, even the most sensitive eyes would lose their function. This was a completely different method of concealment from camouflage.
Grimm turned into the darkness and stopped in front of this dense forest of stone pillars, not daring to advance any further.
The Origin of Darkness only engulfed light and perfectly hid in the darkness. Against this kind of sound wave detection, it would lose any concealment effect.
The most important thing was that Grimm could easily sense that there was an ancient creature in front of this forest of stone pillars with the aura of Evil Blood.
Although Grimm, who had mastered the Destructive Force, was not afraid of fighting a Level-3 creature head-on, it was not a guarantee of victory. If the Destructive Force could not hit its target, no matter how high the degree of attack was, it would be of no use.
If he could make use of his intelligence to make better choices, Grimm would naturally not use such a stupid way of fighting.
Moreover, what Grimm wanted was not to win the battle and expel this level-3 creature. What Grimm wanted was the Evil Blood in this ancient creature's body, which required Grimm to kill it.
Sound wave detection?
As a Magus with the knowledge of ultrasonic positioning spells, Grimm could clearly sense from the sound wave detection in front of him that this was just an ordinary secondary sound wave detection ability. There was nothing special about it.
Grimm suddenly cut open the dimensional gap and took out a silk yarn!
This silk yarn originated from a strange creature that Grimm had discovered during his first mission to explore the underground burrow in the Burrow World. The creature's main body was hidden under a furry, round, balloon-like fur. It was perfectly hidden from Grimm's senses at the time, and only the most basic sense of light could not be hidden.
However, in the underground environment of the Burrow World, the evolution direction of the creatures was towards the evolution of sound wave perception, and very few of them evolved through the evolution of super light sensitivity.
Usually, the species in a world would evolve in the same direction, or it could be said that the evolution of the creatures in a small isolated area would also evolve in the same direction, influenced by the laws and environment of the world.
That was why that creature could move around the Burrow World like a fish in water.
Later, because this creature ambushed Little Eight's Mud Beast, the angry and sorrowful Little Eight used the Mysterious Bird Poop Spell to mark it. Later, it was captured by Grimm with great difficulty and stripped of the creature's most valuable fur.
Grimm named it Soundproof Skin.
The skin and the fur were two different parts, which were separated by Grimm.
The skin of this creature could conceal the breath of the sealed creature, including the sense of cold and heat.
This was regarded by Grimm as a powerful carrier of self-sealing sorcery. Unfortunately, Grimm did not have any relevant knowledge about self-sealing sorcery. He wanted to study it on his own, but all these years, his time was occupied by the study of the Destructive Force, and he never had the chance to do so, so he kept it.
And Grimm used a small part of the creature's fur to weave this Soundproof Silk Yarn.
This Soundproof Silk Gauze was a precious material that Grimm had prepared for the production of the Robe of Representations. Its only function was to evade the detection of sound waves. This function would be the nightmare of Sound Sorcerers and creatures that could sense sound waves!
For example … the dead Hill Wood, Fake Faceless Nilmar, Big Ben Stigmata Sorcerer, and the Rock Bats in front!
The area weaved by the Soundproof Silk Yarn was large enough, and Grimm carefully wrapped himself in it.
The fur weaved into the Soundproof Silk Yarn had evolved very cleverly, just like the outer metal of Grimm's Starfall Reconnaissance Craft. The outside world could not perceive anything inside, but the inside could clearly perceive the outside world. Otherwise, Grimm would just be putting himself in a cage.
Slowly, Grimm flew into the forest of stone pillars.
Sure enough, the sound waves of the Blood-Stained Rock Bats passed through the outer layer of the Pool of Darkness, but the moment they came into contact with the Soundproof Silk Yarn, they were cleverly "slipped" away. There was no rebound or refraction. Grimm achieved perfect invisibility in the detection of sound waves!
"Hehehehe, the Robe of Representations, I'm really looking forward to it!"
Grimm continued to move in the darkness like before, quietly wandering in the forest of stone pillars, pursuing the vague breath of the Evil Blood.
A little less than half an hourglass later.
Compared to the other Bloodprint Rockbats of the new generation which were only about ten centimeters tall, this was a huge Rockbat that was more than two meters tall. Its gray skin was like a rock, and its two huge wings were protecting it. It was sleeping upside down on top of a stone pillar, and it was completely unaware of Grimm's approach.
"A distance of twelve meters is within the attack range of the Annihilation power arcs."
It was a pair of calm eyes, devoid of any emotion.
Quietly, Grimm extended the Sabbatic Goat Staff and pointed it at the bottom of the ancient Rock Bat's head.
Crackle!
The black arc blended into the darkness and shot towards the sleeping Rock Bat in a flash.
The Rock Bat reacted the moment the Destructive Arc shot out. It instinctively flapped its wings to protect itself, and at the same time, it tried to avoid the terrifying attack that made it feel the aura of death.
"I still can't form a perfect sneak attack."
The Rock Bat's alertness and evasion were partly due to the disturbance in the light source caused by the Destructive Arc, and partly due to the vibration of the energy ripples. Lastly, it was because Grimm could not hide his sense of danger.
But even if he sensed it, it was too late.
Boom!
The crisp sound of energy piercing through the stone cave echoed, like the dull sound of a stone falling into water.
After the Destructive Arc easily penetrated the wing defense that the Rock Bat was so proud of, it shattered and destroyed its head. With a bang, even the stone pillar that the Rock Bat was hanging on was destroyed.
But due to the characteristics of the Destructive Arc, it did not cause exaggerated damage over a large area, and the energy ripples were well concentrated.
Kaboom!
The stone pillar collapsed, and the terrifying energy ripples caused the stone cave to boil. Thousands of Rock Bats flapped their wings in shock and flew away.
Pa!
The headless body of the Level-3 Ancient Rock Bat fell to the ground, and there was a large hole half a meter in diameter in its wing. It was extremely smooth, and the flesh and blood inside had completely disappeared.
"Success."
Grimm's figure flashed, and he came to the side of the Rock Bat's body. He took out a new crystal bottle and found the Evil Blood in the Ancient Rock Bat's body, and collected it.
Another 100 Sorcerer Essences.
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