However, when the two sisters, Yang Yu and Lin Xi and Lin Ying, walked to the end of this entrance, their expressions were shocked again, and they looked at the space in front of them with long mouths.

At the end of the cave, there is not a dead end, but a huge space that looks like another world.

And in this huge space, there are no living things, no plants, no clouds, not even earth!

In this space, there are only thunders, endless thunders, like the thunder of a vast ocean.

The thunder was surging, just like a tsunami above the vast ocean, shaking the heavens and the earth, and the power was amazing.

And these thunderbolts were rolling in this space, and the astonishing thunder aura was diffused from it.

"This is it, this is the source of the other breath I sensed!" Yang Yu looked at the Lei Hai in front of him, his face was very shocked.

"Isn't this Nine Pole Cave just three mountains connected together? Originally, that Heavenly Thunder Root Cave should be at the end, but why is there such a space, and besides, it is so big. Lin Xi also looked at this cave with great shock.

"It's unbelievable, it's unbelievable, it's just another world. Lin Ying spoke, which can be said to be the sentence with the most words in her time.

"I'll just say, there is such an entrance hidden in this Nine Pole Cave, and what is hidden in this cave will definitely not be simple. Yang Yu looked at the Lei Hai in front of him, and his eyes flashed with fiery light.

"There are things, but this is thunder and thunder, is it any use?" Lin Xi frowned, a little puzzled.

"I don't know what it's for, but I understand how Tian Regen came from. ”

Yang Yu shook his head, he still didn't see anything special now, but he was sure that there must be a great opportunity in this, and he had to spend time exploring it seriously!

"One such Thunder Sea can create a Great Luo Golden Immortal like Tian Lei Gen, and this Thunder Sea has already become a heavy treasure in itself. ”

Lin Ying shook her head and looked at this Lei Hai, her eyes were also fiery.

"For those who practice the Thunder Dao Spell, this is a cultivation holy place that is more useful than any other place. Yang Yu nodded, and possessiveness rose towards this Lei Hai.

"But I feel that the power of this thunder is more terrifying than that of my father. Lin Ying shook her head and said.

"It's okay, since this thunder sea has appeared in front of me, then the opportunity for this is none other than me. ”

The corners of Yang Yu's mouth were raised, looking at this sea of thunder, it was still very flat.

"By the way, next, we may still take it here for a while, I will teach you a thunder path spell, and then this thunder sea advantage, directly practice to perfection. ”

Yang Yu looked at Lin Xi, the two sisters Lin Ying, and intercepted a piece of the Thunder Dao Attack Technique from the Thunder Emperor's Treasure Technique and taught it to the two of them.

"We practice the Thunder Dao Spell, what about you?" Lin Xi and Lin Ying looked at Yang Yu.

"Don't worry about me, if you want to get the opportunity of this thunder sea, then this space is still waiting for me to explore!"

Yang Yu looked at the endless thunder sea, said with a smile, and then flew directly into the thunder sea under the shocked gaze of Lin Xi and Lin Ying.

"Yang Yu!" Lin Xi and Lin Ying's faces changed greatly, and they rushed to the front of Lei Hai, looking at the direction where Yang Yu had disappeared, and their eyes were about to split.

"Yang Yu, you speak. Are you still there?" Lin Xi shouted, his voice full of anxiety.

"Yang Yu!" Lin Ying was also drinking, her face full of worry.

"Thunder Emperor Treasure, I am the Emperor of Thunder!"

However, before the two of them could worry for a minute, a loud shout sounded from the endless sea of thunder, causing Lin Xi and Lin Ying's eyes to light up instantly.

"Boom!"

A few seconds later, in the shocked eyes of the two of them, countless thunderbolts began to tumble, all of which began to rise from below, rushing into the roofless sky.

Ten minutes later, the Endless Thunder Sea had risen above Lin Xi and Lin Ying's heads, and Yang Yu's body also appeared in Lin Xi and Lin Ying's sight at this time.

Yang Yu was dressed in black at this time, his black hair was fluttering, and in Yang Yu's hands, thunderbolts connected the endless thunder sea above their heads.

Around Yang Yu, countless thunderbolts thundered, like thunder pillars that reached the sky, all shining around Yang Yu.

And Yang Yu's hands connected to the endless thunder sea, as if one person was holding up the entire thunder sea, and the surrounding thunder pillars were like reaching the sky, surrounding Yang Yu, making Yang Yu like a god at this time, the emperor of the thunder path.

"You two practice well, I'll explore!" After Yang Yu controlled the Endless Thunder Sea into the sky with the Thunder Emperor Treasure Technique, he rushed directly into the bottomless abyss below and began to look for a great opportunity.

Lin Xi and Lin Ying didn't worry or dissuade this time, they had already seen Yang Yu's terrifying methods, what else was there to worry about.

At that moment, the two of them sat down directly with their knees crossed and began to practice the thunder path spell taught by Yang Yu.

At this time, Yang Yu had already gone deep into the bottom and stepped on the ground, this world was not what Yang Yu guessed, there was no heaven and no earth.

"Another big rodan has been used, I hope you, Lei Hai, don't let me down. ”

Yang Yu began to fly over this land, his divine thoughts were released, and he began to search in a carpet manner.

In fact, Yang Fan didn't want to use the Great Luo Dan, but as soon as he entered this sea of thunder, although Yang Yu said that he could rely on the Thunder Emperor's Treasure Technique to walk safely, Yang Yu's mana and soul power could not make Yang Yu last for a few minutes at all.

Therefore, Yang Yu could only use the Great Luo Dan, relying on this hour to be close to the invincible state, and using the Thunder Emperor Treasure Technique to explore the entire Thunder Sea.

But the truth was a little beyond Yang Yu's expectations, and half an hour passed. Yang Yu explored about half of the Thunder Sea area, but he didn't find any items at all, out of the pitch-black wasteland, or the pitch-black wasteland.

"Could it be that this big rodan is wasted like this?" Yang Yu looked at the endless wasteland, his face was a little ugly, if this was the case, it would be a real loss.

"No, if I don't finish exploring this Lei Hai today, I, Yang Yu, will feed all these five big rodans to the dogs!"

Yang Yu looked at the endless wasteland. His face became firm again, Da Luo Dan still had half an hour left, and it was just right to explore the remaining area, if there was really no chance, then Yang Yu could only admit it.

And just like that, minute by minute, minute by minute...... Ten minutes...... Fifteen minutes...... Twenty-five minutes......

Finally, when Yang Yu was about to give up and was about to return to the entrance, in his sight, a building raised in the endless wasteland appeared!