Sky Prison signed in for 20 years, I am invincible in the world

[Ding, sign-in failed. 】

The system prompt sounded in Chu Xuan's mind soon.

"Ok?"

Chu Xuan raised his brows immediately, and a look of unconcealable surprise flashed in his eyes.

This result was undoubtedly a bit beyond his expectations.

He has also encountered many times of failed sign-in, but most of them were exhausted, causing the "sign-in location" to collapse, and then such a situation occurred.

Like this time, it is relatively rare for the first sign-in to fail.

"Could it be that this is not the real Taishi Demon Palace?"

"I don't have enough background, so I can't get the wool?"

"Or, is there anything special about the environment here?"

Various thoughts flashed through Chu Xuan's mind.

As soon as his heart moved, he immediately operated the Xiantian Eight Diagrams Diagram, and his eyes instantly burst into golden light.

What was originally a blurry scene suddenly became clear under such insight.

The billowing demonic energy seemed to have been completely wiped out, and everything returned to its original appearance.

Looking carefully, everything around is a mirage, an illusion projected.

It's just that it was obscured by the weird power of the Taishi Demon Palace, so it was possible to confuse the real with the fake, even Chu Xuan, who was a powerhouse in the Immortal Emperor Realm, was kept in the dark.

Chu Xuan narrowed his eyes slightly, then removed his supernatural powers, and looked again, everything returned to its original appearance, and it was still difficult to tell the truth from the false.

"According to what the ghost mother said, there should be quite a few strong people entering this Taishi Demon Palace, including many powerful people in the Immortal Emperor Realm with extraordinary supernatural powers."

"However, so many people have failed to return. It seems that this Taishi Demon Palace does have some skills, otherwise, it would not have been able to refine and master it for so many years."

"At least this is enough to block the strange power of the gods in the Immortal Emperor Realm from the detection of the spiritual sense, which is far from being comparable to ordinary treasures."

Although Chu Xuan had confidence in his supernatural powers, he did not dare to say that he could beat other Immortal Emperor Realm powerhouses in every aspect.

Every Immortal Emperor Realm powerhouse basically has a few brushes, especially those veteran Immortal Emperors who have lived for countless years, all of them have a lot of cards hidden, and the magical powers and secrets they master are countless.

But for so many years, the powerhouses of the Immortal Emperor Realm have not been able to get the Taishi Demon Palace, and there are even strong people of the Immortal Emperor Realm who have fallen here, which in itself is enough to explain many problems.

Thinking of this, Chu Xuan became more vigilant in his heart. He ran the Xiantian Eight Diagrams again to maintain the advantage of sight, and then walked forward step by step.

After walking for an unknown amount of time, not only did the devilish energy not dissipate at all, but it became stronger and stronger, and the strange atmosphere around it also became stronger.

Suddenly, a black shadow flashed past, changing positions like lightning, and then landed on Chu Xuan's side, swooping towards him with a gust of evil wind.

However, Chu Xuan's reaction speed was astonishing. Before the black shadow touched his body, he slapped it down with his backhand, and a terrifying energy erupted.

With a bang, a corpse exploded and turned into a cloud of incomparably weird magic mist, but it was still like a demon, rushing towards him with its fangs and claws.

Chu Xuan raised his brows when he saw this, and before he could do anything, a large number of black shadows suddenly appeared in all directions.

Looking carefully, these black shadows are all strange corpses, but now they are all dominated by the Taishi Demon Palace and turned into puppets.

These golem puppets at least possessed the combat power of a quasi-immortal emperor, and they were not afraid of death, and they didn't care whether they were injured or not. In a blink of an eye, they all roared and rushed towards him.

If it were an ordinary strong man, he would definitely be in a hurry at this moment, but for a strong man at Chu Xuan's level, this small scene was far from enough to make him lose his sense of proportion.

To put it bluntly, with his current physical strength, even if he stood still, these golems might not be able to do anything to him.

Chu Xuan snorted coldly, and the power of the rules around him was instantly mobilized by him, turning into a series of horses, whistling around him.

All the golems that rushed over were swept away by this terrifying horse, and they all collapsed like sand and dust, and even the evil spirits transformed by the devilish energy also melted into nothingness at an alarming speed.

In just a short moment, all the thousands of golems that appeared around them were left with a piece of broken limbs.

Chu Xuan's face remained unchanged, and he still walked forward in a leisurely manner.

After a short time, the scene in front of him finally changed. Strange buildings appeared in front of him. From a distance, they looked like a bustling ancient city.

It's just that these buildings seem to be shrouded in demonic energy, giving Chu Xuan the feeling that they are full of indescribable evil atmosphere.

Chu Xuan didn't look forward and backward, and quickly chose the building closest to him, and walked in directly.

This is a tavern. As soon as Chu Xuan walked into it, he saw the old shopkeeper sitting at the counter raise his head.

However, there was no smiling face, and the other party's blood-red eyes were full of ferocious intent.

In the next second, a terrifying demonic energy erupted from the old shopkeeper's body, rushing towards him like a monster, not at all old, but faster than lightning.

According to Chu Xuan's feeling, the old shopkeeper is connected to the whole tavern's air mechanism, which is far more terrifying than those puppets before.

Maybe it may not be able to threaten the strong of the Immortal Emperor Realm, but even if the strong of the Immortal Emperor Realm want to solve it, I am afraid it will not be so easy.

However, although the speed of the old shopkeeper was fast, Chu Xuan's movements were even faster.

"System, sign in!"

[Ding, the sign-in is successful, congratulations to the host for obtaining a special magic crystal. 】

With the sound of the system prompt, the tavern collapsed in an instant.

The old shopkeeper who was connected to the tavern's aura also froze in place in an instant, as if he had been hit by a body-holding spell.

Immediately afterwards, his body collapsed and disintegrated, disappearing without a trace in the blink of an eye.

Chu Xuan raised his right hand, and an extremely mysterious black crystal appeared in his palm.

He could feel that this black crystal contained extremely pure magic energy.

For demon cultivators, it is simply a priceless treasure.

Even for the strong in the Immortal Emperor Realm, it may have quite a good effect, enough to improve a lot of cultivation base.

Although Chu Xuan didn't need it himself, if he exchanged it, at least in the Nether Starfield, those experts in the Immortal Emperor Realm would definitely rush to trade with him.

"It's not a bad harvest."

Chu Xuan reluctantly nodded, then turned and walked towards the second building.

Anyway, he has a lot of time, and he doesn't care if he delays for a while.

[Ding, the sign-in is successful, congratulations to the host for obtaining a special magic crystal. 】

[Ding, the sign-in is successful, congratulations to the host for obtaining a special magic crystal. 】

[Ding, the sign-in is successful, congratulations to the host for obtaining a special magic crystal. 】

……

The system prompt beeps continuously.

Almost wherever Chu Xuan went, the buildings there collapsed.

Although the evil puppets in these buildings are extremely ferocious, some of them are weird and can even pose a threat to the strong in the Immortal Emperor Realm.

But they didn't even have time to fight against Chu Xuan, let alone pose a threat to him. They vanished into nothingness along with the building in less than a second.

On the contrary, the number of magic crystals accumulated in Chu Xuan's hands was increasing, and before he knew it, there were more than a hundred pieces.

And along with this process, Chu Xuan keenly felt that the devilish energy in the void began to drop at a speed visible to the naked eye.

"Perhaps when it drops to a certain level, there will be some special changes."

Such a thought flashed through Chu Xuan's mind, and he became more diligent.

However, at this time, it seemed that such a loss could not be borne, and all those buildings suddenly disappeared.

At the same time, the surrounding demonic energy was tumbling, and one terrifying figure after another emerged from the ground.

What the hell... can't you afford it?