Whew, whew!

One by one, white ghosts walked forward, most of them in the form of beasts, and occasionally in the form of humans, neither trees nor rocks could stop their progress.

They moved silently, passing through the trees and rocks, appearing on the other side of the trees and rocks, and heading in one direction.

It's as if something is calling them in that direction.

"Ghosts, and there are so many of them?"

Gray felt his scalp tingle and a chill in his back.

Since the last time he encountered the ghost and knew his weaknesses, Gray didn't have much fear of the ghost.

It was just an alien lifeform formed after the death of a person or animal, and with his current strength, he was holding a thunderbolt magic sword that could restrain ghosts, and even if it was hundreds of ghosts, he was sure to kill them.

But at this time, the ghosts in his sight were not hundreds, not thousands, but tens of thousands, and maybe even more than 100,000.

Even if he kills softly, for days and nights, he can't finish killing.

"What the hell is going on, how can there be so many ghosts? Doesn't a ghost need a special environment to form? ”

According to Sophia, and what he had read about ghosts in the Sidney books, ghosts were special beings that could only form under certain very special circumstances.

It's rare, and if it does, it's not too many, but now there are tens of thousands, if not more than 100,000 ghosts.

"Could it be that there's a huge environment around here that can generate ghosts?"

Gray guessed in horror.

If this is a huge environment that can generate ghosts, and there are so many beasts in the night forest, it makes sense that there are so many ghosts.

"These ghosts are clearly converging in one direction, what is there in that direction?"

Gray tried to look in the direction where the ghosts were converging, but it was too far away for even his eyesight to see what was in that direction.

"Would you like to go over and have a look?"

Tens of thousands of ghosts converge in one direction, extremely strange and likely to contain great danger.

However, when he encountered such a thing, he was extremely unwilling not to investigate it.

Danger and opportunity sometimes coexist, and when encountering danger, it is also possible to encounter opportunity.

"Follow up and take a look, and if you see danger, retreat immediately!"

With a decision in mind, Gray slid down from the top of the rock, put away the tent, and put the ape into the rune space bag, and carefully walked in the direction where the ghosts gathered.

As he walked in that direction, inevitably, he encountered the ghost.

A ghost with a body length of five meters that was supposed to be a mad blood beast appeared before his death.

Sonorous!

Gray quickly drew his magic sword, guarding carefully.

As soon as the opponent attacks him, he will immediately activate the lightning of his magic weapon and slash them to death.

However, to his surprise, the huge ghost continued to move forward as if it hadn't seen him.

Without taking the sword back from his hand, Gray continued to walk forward, holding the sword in his hand.

As he moved forward, he encountered more and more ghosts, all kinds of them, and among them, Gray even saw a huge brute-level blood beast ghost.

Without exception, they all ignored him and walked in one direction.

Keep your distance from these ghosts and follow them.

After more than half an hour, the woods disappeared and the terrain ahead was empty.

This is a rocky terrain, extremely empty, scattered mountain rocks, except for mountain rocks and mountain rocks, you can rarely see trees.

The direction in which the ghost travels is towards the heart of the rocky terrain.

After another mile, Gray's eyes suddenly shrank.

A huge building emitting a hazy white light appeared.

It seemed to be a huge palace.

Inside, the buildings, I don't know what texture is made, rough and simple, exude a misty white light, extremely majestic and magnificent.

The tallest of them, 100 meters high, is located in the very center of the palace and is a huge altar-like structure.

At this time, the ghosts that gathered like a tide were pouring towards the palace that emitted white light.

They approached from four directions, came into contact with the walls of the palace, and then, visible to the naked eye, their bodies disappeared from the palace, as if passing through the palace and as if they were blending into the palace.

Like a moth to a fire, one after the other.

"What the hell is this, is it an imperial relic?"

Gray's first thought was the remnants of the Imperial period.

During the Imperial Period, the most glorious period of this continent, during that period, there was an existence above the king level, and convenient achievements such as runes, refining weapons, and refining medicines were also higher than now.

There are occasional rune puppets excavated from the ruins of the empire, and their combat power is extraordinary, and it is rumored that there have even been rune puppets with a combat power of reaching the king level.

There are rumors that there have been silver-level magic weapons with a grade above bronze, and it is rumored that such weapons are even enough to increase people's combat power by a large level.

As for magic potions that are not easy to preserve, they rarely appear, and only a few times they appear, but there are magic potions whose effects far exceed the current level of alchemy, and there is even a bottle of magic potions that makes a wild-blooded warrior a king-level warrior.

"No, this style doesn't look like a relic of the imperial period."

After looking at it from a distance, Gray shook his head slightly.

So far, he has come into contact with three imperial ruins, and he has read many books about imperial ruins in the Sidney family, so he can be said to have a deep understanding of the style of imperial ruins.

The architecture of the imperial relics is very exquisite and full of artistry, but the buildings in front of you are extremely rough and simple, paying more attention to the whole, majestic, and the architectural style and the imperial relics can be said to be two extremes.

"And it's not like the architectural style of the Four Kingdoms, what era of architecture is this? Could it be a building older than the Empire? ”

If it is not the architectural style of the Four Kingdoms, nor is it the architectural style of the Imperial period before the Four Kingdoms, then it can only be an architectural style that is older than the Imperial period.

Only this kind of speculation can be reasonable.

"Where is the entrance?"

On the side of the building facing Gray, there is an arched passage more than 50 meters high and 30 meters wide, which is emitting a faint white light at this time.

Narrowly avoiding the ghost, Gray made his way to the arched passageway.

When I looked in, I saw that it was a deep passage.

The walls around the passage emitted a hazy white light, dim and deep.

With a slight hesitation, he cautiously walked into the passage, his body tense at all times, and as soon as he realized that the situation was wrong, he was ready to withdraw immediately.

Bang!

However, as soon as he took a step forward, he was suddenly startled, and retreated sharply back again and again, directly retreating to a few dozen meters away.

"What's going on?"

Dozens of meters away, after confirming that no anomalies had occurred, Gray showed a hint of suspicion on his face.

Just now, he felt as if he had hit a wall, so he didn't hesitate to retreat.

After waiting a few more moments to make sure nothing unusual was happening, Gray walked forward and came to the entrance of the passage again.

He reached out and touched forward.

Syllable!

Ahead, his hand was in the way, as if it were caressing an extremely smooth wall, but there was nothing in front of him.

"Invisible walls?"

Gray stepped back a few dozen meters away, his eyes narrowing slightly.

At the entrance to this passage, there is probably an invisible wall blocking the entrance.

"I wonder if I can break it?"

The building in front of him was very mysterious, and Gray wanted to go inside and investigate it to see if he could find anything, but the presence of invisible walls kept him out.

Hmmm-

It was obviously impossible to give up like that, and after stepping back a bit, Gray slashed towards the entrance with an icy wind blade.

I saw the turquoise wind blade, turning into a green light, slashing towards the entrance of the building, but the next moment, when it was close to the entrance, it disappeared strangely.

There was no loud bang against a hard object, and there was no cold air, as if it had suddenly disappeared.

"Gone?!"

Gray's pupils shrank, and instead of blocking the Ice Wind Blade, he directly made the Ice Wind Blade disappear.

Boom, boom, boom!

A trace of thought flashed in his eyes, and he used his blood beast ability with all his strength, and dozens of ice wind blades shot out from in front of Gray, shooting towards the entrance in unison.

The next moment, a similar scene appeared, dozens of ice and wind blades disappeared in unison, and there was not a single movement left.

"With my current strength, I can't break through this invisible wall at all!"

Seeing this, Gray's brows furrowed.

Even with his strongest blood beast ability, it disappeared without a trace of stirring, and if he wanted to break this invisible wall, with his strength, he would definitely not be able to do it.

"I don't know if there is a population anywhere else!"

He avoided the ghost and walked around the huge building, and after half an hour, he circled the huge building.

In addition to the entrance that was first discovered, the rest of the place was a high wall of fifty or sixty meters, and there was no entrance at all.

He tried to climb the high wall, only to find that there was also a smooth "wall" near the wall that could not be seen.

"What's inside this building, and why are these ghosts crashing into this building one after another?"

The ghosts are still like moths to a fire, crashing into buildings and the like, and once they touch a building, these ghosts will suddenly disappear, and I don't know if they have completely disappeared or entered the building.

"Well, the light emitted by the building seems to be brighter than before!"

Gray stared at the building in thought, and suddenly, his face moved.

The brightness of the building now was significantly brighter than when he first saw it before.

If the light of the building was like moonlight on a cloudy day, now it is like moonlight on a sunny day.