The fourth order of the Immortal Thunder Period, controlling the laws of space, can travel in the space channel, and truly reach the level of one thousand miles and the end of the world.

In addition, when it comes to the fourth order of the Immortal Thunder Period, because the feeling of the law of space is more intense, it can mobilize the amount of space power for its own use and crush the space, so the fourth order of the Immortal Thunder Period is called the real promotion of the Immortal Thunder Period.

Obviously, Lei Yu has reached this point, he is no longer a weakling, even under this starry sky, he has a place, and he is no longer excluded like before. If Lei Yu enters the starry sky now, he can even seize a life star and become the master of this star.

Lei Yu's face was pale, but his expression was very excited, where the Heavenly Eye between his foreheads was located, the originally bleeding Heavenly Eye quickly recovered at a speed visible to the naked eye, and his body was full of strength, as if it was endless, and it could not be exhausted at all.

"I see, after mastering the laws of space, I can see the cracks that exist in this space, and it is through these cracks that the fourth-order cultivators of the Immortal Thunder Stage can carry out space traversal. Then if my strength goes one step further and reaches the peak of the Immortal Thunder Stage, or even the Tenth Order of the Immortal Thunder Stage, then I will be able to use these spatial cracks for my own use and truly create a World Realm of my own that is not connected to this World Realm!"

Lei Yu's eyes shone brightly, and his heavenly eyes scanned the world, and more details were revealed. This piece of heaven and earth is no longer complete, and it is even filled with many cracks, compared to the Thunder Continent and this starry sky, the two are fundamentally two concepts, but despite this, he still can't break through the encirclement of this piece of heaven and earth, because his strength is still too weak, and the power of the space law he has mastered is not enough to break the shackles of this space.

"Boom!" Suddenly, a violent vibration sound spread out in the earth, like a giant stepping on the earth, making Lei Yu's heart ripple, and he felt an unbearable coercion from this sound.

This coercion is unprecedentedly strong, and even the coercion of the Dry Bone Ancestor, Sword Demon, and Green Willow together is not as good as the coercion of this coercion, this is the coercion of the stronger, even if Lei Yu is stronger now, it is by no means the opponent of the one who exudes this coercion.

"Boy, there's movement in the demon cave!" Yin Ming's voice was calm, but Lei Yu still heard some fluctuations from his voice, and even nervous, obviously the things in this demon cave were very terrifying, otherwise, Yin Ming would not have such an expression.

Lei Yu raised his eyes and saw that now his cultivation had improved, and he could see much more than just now, but when his divine thoughts swept towards the demon cave, a powerful barrier was blocked in front of the divine thoughts, and no matter how Lei Yu used it, he couldn't enter the demon cave and explore what was going on.

In the demon cave, there is a gloom, but there is a momentum awakening, as if there is something terrifying in this demon cave, and this momentum is still improving over time, and it seems that there will never end.

This situation made Lei Yu's heart awe-inspiring, the demon cave was too mysterious, although it was the first time he saw the demon cave, but his heart was extremely vigilant, this was not only the ghost tide in the demon cave, but also because of something that did not know the way.

Often, the most terrifying thing is not what is seen, but what is unknown. It is precisely because of the unknown that there is fear!

"Huhu!" In the demon cave, a gust of yin wind suddenly surged, and there was no sign at all before, blowing out from the demon cave, and suddenly, the periphery of the demon cave was shrouded by a layer of yin wind, forming a tide.

In this wind, the yin wind is rolling, constantly gathering, and even forming a tornado, reaching the sky, making people shake at a glance.

Yin Qi, Evil Qi, Corpse Qi, all kinds of gloomy aura gathered in one place at this moment, this place is like a cemetery, although there are no bones covering the earth, but the vibration of the heart is more than what can be seen in the eyes.

"What's going on? Could it be that a ghost tide has erupted in this demon cave again?" Lei Yu's heart was shocked, and his face could not hide his shock.

"If it's just a ghost tide, we don't have to worry, after all, no matter how terrifying the ghost tide is, it is still like an ant for us and others, at most it will take a little more effort. What worries me is that our arrival has alarmed the sleeping powerhouses in the caves. ”

"Although they are dead, their bones have been soaked in the demon cave for tens of millions of years, and they have long been psychic and have become alternative creatures. They cultivate to be powerful, gathering endless evil qi, yin qi, and corpse qi, and they do not feel pain, as long as there is endless evil qi, yin qi, and corpse qi to replenish, they can continue to live and become a different kind of immortality. ”

Yin Ming's tone was gloomy, obviously he had a headache about the existence he said, which was almost equivalent to Xiao Qiang, who couldn't be killed, no matter how many times he was killed, as long as there was still a breath, he could immediately recover completely.

And if your body is broken, as long as it is once, it will be a situation from which you will never recover!

There is no level between the two sides at all, so even the powerhouses of the Netherworld try their best to fight this kind of creature, but unfortunately they are trapped here, and unless they can get out of this place, they will have to face this reality.

The wind roared, the ghosts roared, outside the demon cave, the tide became stronger and stronger, and there were faint bursts of hissing echoing in the void, like a ghost roaring in the ears, making people uneasy.

"Boom!" A loud bang rang out continuously, the earth trembled, and Lei Yu could see the continuous falling of rubble around the Demon Cave, as if this Demon Cave might collapse at any time. However, Lei Yu would not have thought that the Demon Cave was so fragile, otherwise, the Demon Cave would not have stood here for tens of millions of years.

"Be careful, that thing is coming out of the cave!" Yin Ming reminded, his face serious.

I saw that at the entrance of the Demon Cave, a huge foot collapsed out of the darkness of the Demon Cave, it was a combat boot, very tattered, I don't know how many years the road has passed, and there are some deep black on it, exuding a strong evil aura.

These deep black colors are nothing else, it is the blood that was sprinkled on this boot thousands of years ago, and it has been soaked in the years, so that these blood are stained with a thick evil aura, and it seems to be integrated with this boot, completely indistinguishable from you and me.

"Boom!" The sky trembled, and another loud noise came out, this loud noise was so loud that it was like countless thunderbolts exploding in the void, so that Lei Yu's heart couldn't help but be startled, and there were some waves.

It was a bare foot, which was not wrapped in combat boots, and was covered with all kinds of wounds, almost none of which were good, and at a glance, a tragic aura came to the face, as if I had seen an incomparably tragic battlefield, and the sea of corpses and blood covered the earth.

The two feet, although they are different, but it is enough to show the strength of the existence in this demon cave, such a momentum must have been formed after countless bloody battles, just like a soldier in a hundred battles, constantly tempering, constantly fighting, and finally becoming an elite soldier among elite soldiers.

"Er...... Wait...... To give...... I...... Enter...... Come...... "In the demon cave, there was darkness, and a voice sounded suddenly, this voice was not very loud, but it was full of a forest aura, constantly winding in the ears, no matter how it was expelled, it could not be expelled from the air, as if this voice belonged to him at all.

As this voice fell, the wind tide surrounding the entrance of the demon cave shook suddenly, and the endless wind shook, turning into a huge Yin Wind hand and grabbing towards Lei Yu, looking like it was about to catch Lei Yu.

"It's not good, the terror in the demon cave is about to be started!" In Lei Yu's right arm, the "Nine Nether Thunder Bells" suddenly burst out, and a huge bell body appeared in the sky, full of a hundred zhang in size, as if it were a big mountain.

"Dang" a bell rang, and the sound echoed above the sky, making the gloom of the land much lessened, as if a great sun had risen from the clouds, shining on the entire sky, making the light the main part of the land again.

The big hand in the sky was blocked, and the endless wind shook, making a rolling whistling sound, making the whole sky tremble, as if some could not bear the roar of the wind, and cracks appeared.

The Yin Wind Big Hand shattered, and the endless Yin Wind dissipated, but this was only temporary, with the Demon Cave, these Yin Wind would exist, no matter how strong the bell of the "Nine Nether Thunder Bells" was, there would always be a moment when it would be ground away.

Sure enough, as this yin wind dissipated, another yin wind formed, and this time the yin wind was even more powerful, and the big hand formed covered the entire sky, and the rolling evil qi, yin qi, and corpse qi gathered, and even the yin and the dark couldn't help but change color.

Although the Yin and the Netherworld are powerful, there is always a time when the power is exhausted, but these Yin winds are different, endless, and almost difficult to get rid of.

After more than a dozen attempts, Yin Ming finally gave up on his previous plans. His gaze was gloomy, and there was no expression on his face, as if he had made some important decision. After a while, he spoke: "Boy, I'll leave it to you here, I want to go to the demon cave to have a look, and see what kind of existence exists in this demon cave!"

"Senior, this is too risky!" Lei Yu said with some anxiety, the horror of this demon cave is extraordinary, and it must not be treated with common sense, even if Yin Yin enters it, Lei Yu is also very uneasy.

"Needless to say, I've made up my mind, so it's decided!" Yin Ming's tone was firm, full of undoubtedness, and before Lei Yu could speak again, the "Nine Nether Thunder Bells" turned into a streamer and entered the demon cave, and after a flicker, it disappeared.