Su Yi, who was searching everywhere for the underworld tiger, went around the mountain peak and arrived at a rugged land.

There were no tall trees on the path here. Instead, there were strange rocks.

"I've finally found it, ancient devil powder."

He looked at a strange rock. There was a pool of powder with a unique aura on it. The aura protected the dust from blowing away by the wind.

He quickly ran over and collected the ancient devil powder.

This was a necessary material to refine the azure essence pill, and it was only produced in Demon Subduing Mountain.

He had only heard of the explanation for the ancient devil powder. Demon Subduing Mountain was suppressing the corpse of a peerless ancient devil, so there was the production of the ancient devil powder here.

As for whether the ancient devil was real or fake, no one knew.

[Hint: Collection successful. Obtained ancient devil powder x35.]

Su Yi's face lit up. He did not expect to collect as many as 35 ancient devil powder.

Then, his gaze began to search the area. Since he found the ancient devil powder here, there should be more nearby.

"Oh? What is this?"

After jumping down to a place, he found a hidden cave.

He flipped open the map in his hand, and it was obvious that there was no sign of a cave there.

It seemed like this place had not been discovered yet.

Putting away the map, Su Yi looked at the deep and dark cave entrance.

Due to the cover of the huge rocks, there was almost no light that shone into this place.

He gathered true essence on his fingertip, emitting light as he slowly started to explore.

Under the dim light of the true essence, he could see that the surrounding cave walls were very smooth.

It did not seem to be formed naturally, nor did it look like it was man-made.

"Could I have entered the nest of some demon beast?"

Looking at the claw marks on the wall from time to time, he thought with a serious gaze.

Thinking about it, he still did not stop moving forward.

The deeper he went, the colder Su Yi felt.

Soon, he came to an empty place. The dim light of true essence in his hand was not enough to illuminate the entire cave wall.

Thus, he increased the output of his true essence, and the dazzling light illuminated the entire cave.

However, his action seemed to have alarmed something.

A movement came from the depths of the cave.

Huff, huff...

There were repeated heavy breathing sounds coming from the depths of the cave.

Su Yi's heart skipped a beat. He had also sensed something.

The cold around him became more and more pronounced.

His gaze was fixed on the depths of the cave.

Roar!

With a low roar, ice-blue flames suddenly lit up in his eyes.

One, two, three...

These flames surged, illuminating a figure within the cave.

Su Yi looked at the demon beast that was slowly walking out and saw the information in his eyes.

[Demon king: Frigid flame underworld tiger.]

[Bloodline: Frigid flame bloodline.]

[Realm: Intermediate foundation establishment stage.]

After the demon king completely revealed itself, he was able to see its appearance.

Different from the underworld tiger outside, this fellow's fur was snow white. Light blue patterns surrounded its body and emitted a faint light.

On its majestic forehead, a blazing flame rose. However, this flame was extremely cold.

On the joints of his limbs, there were also ice-blue flames.

The light of this flame even illuminated the entire cave.

Roar!

The frigid flame underworld tiger's dark blue eyes carried traces of cold light as it coldly stared at Su Yi, the human who had invaded its territory.

It was sleeping and it did not know that its own people had already been massacred.

As for Su Yi, he looked at the frigid flame underworld tiger and sighed in his heart.

What kind of luck did he have? He could easily find a demon king's nest.

Looking at the middle stage of the foundation establishment realm of the other party, a trace of seriousness flashed across his brows.

The flames on this demon king's body made him feel extremely cold. He felt a trace of danger.

Roar.

The frigid flame underworld tiger growled at Su Yi. Its huge head raised, indicating for Su Yi to retreat.

When he saw it, he was stunned. This frigid flame underworld tiger seemed to have high intelligence. It was actually asking him to leave?

Seeing that Su Yi did not leave immediately, it was also angry. The spirit power of the middle stage of foundation establishment erupted, and the cold flames on its body burned even more fiercely.

An extremely cold aura pressed down on Su Yi.

Suddenly, it sensed something from Su Yi's body.

It was the aura of its people. Then, it searched for the aura of the underworld tigers on the mountain top and it realized that they were all killed.

Roar!!

That frantic aura made the surrounding walls of the cave freeze.

"Why did it suddenly go crazy?"

Feeling the chaotic aura of the cold flame northern underworld tiger, Su Yi was somewhat puzzled.

It was still amiable just a moment ago, but now it was as if it had killed its entire family.

"Eh, it seems to be true."

When he thought of how he seemed to have killed all the way from the bottom of the mountain to this mountain, countless underworld tigers had lost their lives at his hands.

When he thought about this, Su Yi moved his feet and ran out.

The cave was too narrow and was not suitable for him to fight.

Roar!!

Just as he moved, a huge claw struck where he originally was. The claw scratched the ground and sparks flew, leaving a claw mark that was one inch deep.

When he saw this scene, he quickened his pace again. The claws of this frigid flame underworld tiger were too sharp.

Very soon, Su Yi rushed out from the cave entrance and arrived outside.

With a few somersaults, he jumped away.

Bang--

With a loud sound, the demon king whose entire body was emitting cold and sharp flames pounced on the huge rock at the cave entrance.

Boom!!

The huge rock immediately shattered, and crushed stones and dust flew into the sky.

Looking at this destructive power, Su Yi smacked his lips. was this the destructive power of a mid foundation establishment stage demon beast?

As the dust settled, he immediately raised his finger and formed a hand seal, shouting in a low voice.

"Second move, Tiangang Six Sword Fingers!"

The cold light condensed at the tip of his finger, then he threw it out.

Whoosh--

Facing the six beams of cold light that shot over. The frigid flame underworld tiger raised its head, and the cold air gathered in its mouth.

A ball of cold flame gathered and then shot out, clashing with Su Yi's Tiangang Six Sword Fingers.

Boom!!

With an explosion, the two attacks collided and actually canceled each other out.

Su Yi's gaze focused. He did not expect this demon king to react so quickly. He had locked onto its position before the dust had dispersed.

He did not continue to think. The battle continued.

He raised his hand and shouted with a grave expression.

"Fifth move. Tiangang Sword Intent Finger!"

"Go!"

With a low shout, several streaks of sword qi condensed at the tip of his fingers shot out with cold and sharp intent.

As for the frigid flame underworld tiger, which had blocked the six sword fingers, its huge eyes narrowed.

It could feel that Su Yi's attack this time was extremely fierce. It jumped away immediately.

At some point, the cold flame on its body had become even fiercer, almost enveloping its entire body.

"Eh? Has ikt activated the cold flame bloodline?"

With the demon king's speed increasing explosively, coupled with the changes in its body, Su Yi guessed that the demon king had activated the cold flame bloodline on its body.

Roar!!

The frigid flame underworld tiger roared loudly, and an extremely cold flame began to condense on its mouth.

...