I, the Emperor of Heaven return

"Xuanlong Grotto!" Seeing these four words, a sharp light flashed in Nie Tian's eyes, and he immediately thought of the Xuanlong Demon Saint mentioned by the Iron Sword Demon King.

Is Xuanlong Grotto where the Xuanlong Demon Saint is?

The Iron Sword Demon King mentioned Black Dragon Demon Saint more than once, and every time he mentioned it, his expression showed reverence.

Obviously, the status of Black Dragon Demon Saint is much higher than that of Iron Sword Demon King.

At this time, other people also looked at Xuanlong Grotto, but their faces showed horror.

After the previous tombstone killing formation, no one dared to act rashly, they were all waiting for Nie Tian to speak.

Nie Tian dodged over and arrived in front of the grotto. Suddenly, a strange cold wind hit his face, carrying the pungent smell of blood.

"Huh?" Nie Tian frowned slightly, his eyes like a sharp sword. He looked towards the grotto and immediately felt an ancient aura. The space in the grotto was so vast that it was impossible to see the end at a glance.

The most bizarre thing is that the space of the grotto is flashing with a faint blood-red brilliance, like wisps of blood, making people involuntarily feel the slightest hint of coldness.

Nie Tian did not dare to be careless. He spread his consciousness inch by inch to determine whether there was a killing array or restriction outside the grotto.

After a long time, he took a deep breath and glanced at Jin Dabao, who nodded and smiled, confirming that there was nothing dangerous.

"Let's go in." Nie Tian breathed a sigh of relief and warned: "After entering the grotto, you are not allowed to move without my order, no matter what happens, do you understand?"

"Yes." Everyone nodded. Nie Tian now represented a high authority in their hearts.

Stepping into the grotto, Nie Tian suddenly felt a bone-chilling coldness, as if it could penetrate directly into a person's bone marrow, making people shiver uncontrollably.

This coolness was very strange. Nie Tian and others were all Tianyan realm warriors with extremely strong martial bodies. The ordinary cold wind had no effect on them, but this cold wind actually made him feel chilled to the bone. It was very strange.

The others looked frightened and clung to Nie Tian.

Nie Tian and Jin Dabao walked in the front, leaving Xuanqiu and the three brothers of the Ren family behind. Han Tian walked in the middle carrying Lin Feng and the three girls on his back.

This time Xuanqiu was very obedient and followed Nie Tian's instructions.

"Boss, what is this grotto used for? There is no need to build it so big." Jin Dabao narrowed his eyes slightly, looked at the vast space around him, and couldn't help but say.

Nie Tian shook his head slightly. He didn't know what this grotto was used for.

The grotto is a hundred meters high and forty to fifty meters wide. Let alone people, even sixth- and seventh-level spiritual beasts can pass through.

After walking forward for several thousand meters, the grotto did not become narrower at all, but became wider and wider. The light was projected from nowhere, and it was very bright in front of Nie Tian and others.

But Nie Tian also felt that the blood-red light in the space was getting thicker and thicker, and he could almost see the blood streaks swimming around.

There is a withered aura of death spreading in the space, making people tremble uncontrollably.

"Boss, boss!" At this time, Jin Dabao seemed to have discovered something, and his voice suddenly became trembling.

"What's wrong?" Jin Dabao's reaction made Nie Tian's heart suddenly sink. This fat man was a super optimistic person. He suddenly became frightened at this moment. He must have made a shocking discovery.

"Look, what is that on the stone wall?" Jin Dabao's teeth chattered, and there was no trace of blood on his face.

Nie Tian's eyes tightened and he looked up at the stone wall above. At first glance, he didn't find anything special, but when he looked carefully, he discovered that there was a layer of black brilliance surging on the stone wall, with a slight black glow. .

Nie Tian's divine sense detected the past, and he immediately felt an evil aura. The terrifying aura of destruction made his heart tremble, and even the raw star stones in his body trembled.

"What a weird smell, what is this?" Nie Tian's eyes flickered, and he felt a terrible threat from the stone wall.

It seems that the bloodshot threads in the space are emanating from the black brilliance on the stone wall. The black brilliance is not a dead thing, but a living thing!

Suddenly realizing this, cold sweat broke out on Nie Tian's forehead.

"What breath?" At this moment, Xuan Qiu, who was walking at the end, suddenly screamed, his voice was extremely sharp, and he was too frightened.

Nie Tian and others all turned around and immediately felt an overwhelming and overwhelming aura.

"It's that thing!" Jin Dabao was the first to react, looking at the stone wall above his head, and shouted.

Nie Tian understood immediately. In front of his eyes, a bloody red light spread like a tide, flooding the world and swallowing everything. The powerful momentum was enough to kill everything.

It was the black brilliance on the stone wall. After leaving the stone wall, it turned into a bloody red light, rolling in overwhelmingly.

"Run!" Nie Tian uttered one word, but his figure flashed and rushed towards the bloody red light.

Others ran wildly, but the bloody red light was very fast, getting denser and richer, and a "buzzing" sound sounded in the grotto, making people feel shuddering.

"I want to see, what the hell is this?" Nie Tian was left alone. He shouted deeply and stabbed out with his sword. Suddenly, a sword shield made of sword intent appeared and struck towards the bloody red light.

"Bang!" The sword and shield collided with the blood-red red light, and there was a muffled sound in the void. Then there was a straightforward voice, and the sword shield condensed with sword intent was swallowed up by the blood-red red light in the blink of an eye.

"Hmm?" Nie Tian's eyes trembled slightly, revealing a hint of confusion. What on earth is this blood-red light that can even devour the sword intent?

"Okay! Then try the power of thunder again!" Nie Tian calmed down immediately, and endless thunder surged around him. Purple-gold lightning spread, and terrifying power bloomed, tearing everything apart.

"Roar!" A punch was thrown, and a thunder dragon blasted out. The power of thunder was so vast that the entire cave shook slightly.

"Boom!" The thunder dragon rushed into the blood-red light, slightly slowing down the speed of the red light, but soon, it was swallowed up by the red light again.

"This..." This time, Nie Tian's eyes showed a hint of surprise. The power of the blood-red light exceeded his expectations, and it even swallowed the thunder dragon.

His eyes trembled slightly, like two sharp blades, shooting into the blood-red light.

This time, he saw clearly what was in the red light. It was a very tiny flying ant, only the size of a grain of rice, but its body was as red as blood. There were so many of them that it was impossible to see the end. There were at least hundreds of millions of them.

It was these flying ants that devoured Nie Tian's sword intent and thunder power.

There were too many flying ants, and when they gathered together, they became a blood-red light.

Nie Tian immediately guessed that these flying ants were the black light on the stone wall.

When they were quiet, they were black, and once they became violent, they turned into red.