Ren Fei walked into the cave, walked along the cave to the end, and soon entered the belly of the mountain.The temperature in the belly of the mountain is quite high, and the temperature is at least 80 degrees Celsius or more.Normal people come in here and don't stay long at all.Fortunately, Ren Fei has a strong physique, and with the cold air emanating from the Nine Shadows Cold, he doesn't feel much of it.There is hardly much light in the cave, except for a breach in the top of the mountain, which allows sunlight to shine through.However, Ren Fei has a heavenly vision, and he doesn't care too much about the darkness, even if there is no light, he can see the environment here.As Ouyang Yuehua said, this island is full of ghost fire bats, and Ren Fei can see that there are at least thousands of ghost fire bats in the belly of the mountain.Although it is only a king-level demon beast, with such a huge number of ghost fire bats, the danger level is also extremely high.As for the Starfire Devourer Bat, it hung upside down on the rock wall above the area of the earthfire gushing in the deepest part of the mountain.The Starfire Eater Bat exuded a crimson halo all over its body, and its body resembled a translucent structure, covered with a halo of flame form.The appearance of the ghost fire bat looks much inferior, not only is it not big enough, but it is also quite ugly in pitch black.As Ren Fei entered, the airflow driven by his body resounded, instantly waking up the sleeping ghost fire bats.Several ghost fire bats were closest to Ren Fei, and they flew down from the top of the upside-down cave as soon as possible.Each of them is half the size of a man, and its wings spread out very large.The five-headed ghost fire bat flew down from the rock wall, emitting a ball of fire from its body, turning into five huge fireballs in the air, and blasting straight towards Ren Fei.In the face of the attack of the ghost fire bat, Ren Fei was not the slightest nervous, if it was thousands of ghost fire bats attacking him together, he might have to worry about it, a few ghost fire bats were not the slightest threat to him at all.The nine ghosts in his hand trembled, and five groups of sword flowers appeared in the air out of thin air.It was as if five ice crystals flew out of the air and instantly exploded into the five fireballs.The icy cold air, with a powerful sword qi, exploded in the fireball, and the five-headed ghost fire bat let out a miserable scream, and then it was torn apart by the sword qi and turned into a large curtain of blood and fell.However, the battle here also completely woke up all the ghost fire bats, and thousands of ghost fire bats let out a huge scream.Ordinary bats can release sonic attacks, and these ghost fire bats and monsters, naturally released sonic attacks, are even more powerful.In an instant, Ren Fei only felt as if his ears had been stuffed into countless bronze bells and rang at the same time, and the deafening sonic attack made his head dizzy, and he almost couldn't stand on his feet.Hurriedly running the exercises, Ren Fei forcibly resisted the impact of the sound waves, and his face showed a hint of horror.He didn't expect that when the ghost fire bats here launched a sonic attack at the same time, the power would actually threaten him.If an ordinary martial artist of the same level entered here, just the sound of a sonic scream just now would be enough to kill one person.The sonic attack can directly penetrate the body's internal organs and even the brain.A martial artist whose physical strength is not strong enough is not as simple as dizziness, and it is likely that the flesh and bones of the body will be completely shattered.Ren Fei glanced at the belly of the mountain, this was a confined space, thousands of ghost fire bats screamed at the same time, and the sound bounced back and forth on the cave wall, undoubtedly raising the power of the sonic attack to the extreme.Moreover, sonic waves can be stacked, even if sonic attacks are not the main means of killing ghost fire bats, the power itself is not strong.But the sound waves are superimposed, and the power is naturally far beyond the ordinary, and even Ren Fei can't resist it.At this time, in the belly of the huge mountain, thousands of ghost fire bats flew down at the same time, turning into countless fireballs and launching a group attack towards Ren Fei.Ren Fei instantly activated the Thousand Silk Heavenly Casting Armor, and his body was wrapped in a set of armor condensed by bloody power.The Starfire Spirit Eater Bat didn't get up to fight, but still hung upside down on the top of the cave, just opened its eyes and looked at Ren Fei.It is the king of the cave, and when it encounters an intruder, its Ghost Fire Bat can solve it, and it will naturally not act easily.Ren Fei faced the charge of thousands of ghost fire bats, and the Nine Shadows in his hand danced, turning into a ball of sword qi like ice crystals, enveloping his whole person.However, the constant screaming sound could actually penetrate the Thousand Silk Heavenly Forge Armor around him and directly bombard him.Although his ability to resist sound waves increased after he ran the exercises, his constant attacks on sound waves also greatly weakened his strength.Countless ghost fire bats crashed into his sword qi ball, although many ghost fire bats were directly cut into pieces by the sword qi.But Ren Fei's strength was weakened, and his swordsmanship was inevitably affected.His sword qi ball soon began to deform, and his movements slowed down a lot, and he was actually hit by several ghost fire bats.Fortunately, the Thousand Silk Sky Casting Armor was not so easy to penetrate, and the ghost fire bat pounced on Ren Fei and did not hurt him.However, Ren Fei soon discovered that the continuous screaming sound was not only weakening his strength, but also interfering with the operation of the blood force in his body little by little.The power of this sonic wave is not strong in an instant, but the longer it lasts, the stronger the destructive power will be.Not only did Ren Fei feel that his blood power was gradually being suppressed and disturbed, but even the blood qi in his body began to vibrate and boil.Originally, he also thought that the Ghost Fire Bat was just a king-level lower-rank demon beast, and it only had the strength of the Blood Infant Realm, so it couldn't threaten him at all.But now it is found that this is not the case, as long as the sonic attack of the ghost fire bat group lasts long enough, even if the king-level high-ranking demon beast is standing here, it will definitely not be able to resist it.And soon, Ren Fei found that his attack speed began to change, and the ghost fire bat was already able to dodge his attacks.Like normal bats, ghost fire bats rely on sound waves to detect their environment.Their reaction speed is extremely fast, as long as Ren Fei's movements are not fast enough, they can predict the trajectory of Ren Fei's attack in advance, so as to dodge Ren Fei's attack."
I can't keep my hands anymore!"
Ren Fei knew that he couldn't continue to keep his hand, otherwise he wouldn't be able to defeat even the Ghost Fire Bat Swarm, let alone kill the Starfire Devouring Spirit Bat.But it was definitely not an easy task to kill thousands of ghost fire bats in one go, and even if he burst out with all his strength, he might not be able to do it.While thinking about it, Ren Fei's heart suddenly moved."
There it is!
Don't think you're going to scream!
”Ren Fei glanced at the closed mountain wall and had an idea in his heart.Suddenly, he activated the Pu Prison Vein in his body, and a powerful special force poured into his chest."
Roaring !!!"
A huge sound like a dragon's groan was released from Ren Fei's mouth.A dragon-shaped aura exploded in front of Ren Fei, and the sound waves of the violent shock turned into a violent wind and whistled and spread towards the surroundings.The sonic waves bombarded the rock wall in the belly of the mountain, and then they were rebounded back, and the sonic air currents that constantly collided were superimposed and enhanced in the belly of the mountain, and the power increased several times out of thin air.The huge dragon groan instantly overshadowed the screams of the ghost fire bats, and the powerful sound waves shook and swept through all the ghost fire bats in the air.The Ghost Fire Bat's hearing is much stronger than Ren Fei's, and the power of the sound waves it naturally receives is even stronger.In an instant, the eardrums of the ghost fire bats in the sky were shattered by Ren Fei's dragon roar.The internal organs of many ghost fire bats were shattered in Ren Fei's sonic attack.Ren Fei's body lit up with the golden bell energy, and countless sonic waves that bounced back impacted the bell-shaped energy, and even inspired a loud bell to ring.When it comes to sonic attacks, Ren Fei is no worse than the Ghost Fire Bat Group, and even surpasses it.The group of ghost fire bats flying in the sky fell more than half from the sky in an instant.The remaining group of ghost fire bats also seemed to have lost their sense of direction, colliding and flying in the air.Either they crashed into the rock wall, or they collided with each other, and their bones and flesh shattered and died.Almost in the blink of an eye, when the sonic dragon roar and the bell in the cave stopped, only a few ghost fire bats were left alive.The living ghost fire bat also quickly fell from the sky and fell to the ground in the belly of the mountain.The only one that was unscathed was the two-meter-tall Starfire Spirit Eater Bat.The Starfire Spirit Eater Bat was still watching the show, but its subordinates were instantly killed by Ren Fei, and even it was stunned by the sound waves, and if it hadn't been for its toes firmly grasping the rock wall at the top of the cave, it would have fallen from the sky.