I'm trapped in a cube

The two had not walked far when something strange happened in front of them.

"It seems that a great battle took place here."

Zhou Chao squatted down and looked at the traces on the ground.

There were strange traces everywhere on the ground, some of which looked like claw marks left by some beasts, some looked like traces of battle left by weapons, and some footprints that were unclear.

Not only that, the forest in front seemed to be cut in half by something sharp.

Some trees were inserted crookedly into the soil, and some had all their branches cut off, leaving only a bare trunk.

There was a strange aura of killing in the air, and broken leaves and fragments were flying all over the sky. Zhou Chao gently caught a piece and looked at it for a moment.

"Is this... metal?"

He handed the fragment to Li Luo in confusion, and Li Luo also took it curiously.

"It is indeed metal, a very small piece of metal."

This is a bad omen. The presence of metal means that there must have been some kind of civilization here before.

"Look at the soil, there are a lot of such fragments." Zhou Chao pointed to a place in front, where some broken metal fragments were buried in the soil.

"Do you smell anything?" Zhou Chao asked suddenly.

"Rust, a strong rust."

Li Luo answered without thinking. Since she just walked into the forest, this smell has filled her nose.

The breeze on the sky island blew the two people, but the strong smell of rust made them feel an inexplicable sense of oppression.

Zhou Chao walked forward carefully and pulled out a piece of metal fragment from the soil.

The fragment was covered with thick rust and was unrecognizable. It was impossible to tell what the fragment was originally, but the shape could still be barely seen.

"What is this? It feels so familiar."

Zhou Chao held the fragment and always felt familiar, as if he had seen it somewhere.

At this moment, Li Luo walked to his side and recognized it at a glance.

"This is a hairpin."

Hearing Li Luo's reminder, Zhou Chao suddenly realized.

"No wonder it feels so familiar..."

However, after knowing that this is a hairpin, Zhou Chao became more nervous, because hairpins are very standard human creations.

"Why is there a hairpin? Is there another human being?"

Zhou Chao held the rusty hairpin, his thoughts were a little confused. He walked forward and dug out other metal fragments in the mud.

Hairpins, pins, razor blades...

These extremely common objects in human society actually appeared in the sparsely populated Sky Island Forest.

"Are you sure that the investigation team is the first group of humans to come to this Sky Island?" Li Luo looked at these objects and asked in confusion.

"Of course! I remember very clearly that when we came to this Sky Island, we also conducted a special beacon positioning to confirm that this Sky Island has never been recorded by anyone. Not only this island, but all nearby Sky Islands are unexplored areas." Zhou Chao said very confidently.

"Each sky island on the fourth floor of the abyss where beacons have been placed has a number, and the number of this sky island was determined later."

Li Luo pondered for a moment and asked: "Could there be other hunters who have come to this sky island, but were wiped out and did not send any information?"

Hearing Li Luo's question, Zhou Chao was stunned.

"It's possible..."

Then, he suddenly asked Li Luo: "Didn't you come to the fourth floor through the official synchronization device?"

"How did you know?" Li Luo was a little surprised. She had never told Zhou Chao about this.

"It's easy to know because the location you arrived at is very special."

Zhou Chao slowly explained to Li Luo:

"The official synchronization device will not throw hunters onto a sky island casually. There will be a special sky island to receive hunters who arrive at the fourth floor. After all, most of the hunters who can reach the fourth floor are elite, and the official does not want to cause casualties due to inexplicable situations."

Although there are many synchronization channels from the third floor to the fourth floor, humans can already create fixed "landing points" so that hunters passing through the channel can reach the designated sky island.

"And you came to this sky island inexplicably, it must be because you did not use the official synchronization device."

"There are many such synchronization channels on the third floor of the abyss, some are naturally formed, and some are built by other civilizations. Some of these synchronization channels have certain landing points, and some may be synchronized to strange places."

"So, I am so sure that you came to the fourth floor through an unofficial synchronization device..."

Listening to Zhou Chao's judgment, Li Luo nodded.

But Zhou Chao did not finish, he looked at those strange little objects and proposed a possibility.

"Humans were not able to create a synchronization device with a fixed landing point at the beginning. At the beginning, the first humans who came to the fourth floor also used the synchronization device of the abyss to enter the fourth floor, and their landing points were also random."

"At that time, of course, there was no beacon positioning, and all the information on the sky island was chaotic. People could only move forward in the dark."

"Do you think it is possible that these objects were left by humans at that time?"

"They happened to land on this sky island, left these things, and then left. Because there was no beacon at that time, they completely forgot about this island..."

"But why did they leave so many objects here?"

"Could it be a team transporting supplies?" Li Luo guessed, "They encountered some danger and had to abandon these supplies..."

"It must be like this!" Hearing Li Luo's words, Zhou Chao seemed to be awakened, and said excitedly: "Maybe there was already activated pollution at that time, but humans at that time could not cope with such a situation, so they had to abandon the supplies and escape from here!"

"Could this battlefield be the one left by the previous human battle on the sky island?"

Zhou Chao walked to the strange traces, looked at them carefully, and then came to the broken trees and touched them with his hands.

However, after some observation, he became confused again. "These traces are new... This battle happened not long ago."

This is completely inconsistent with his guess.

The debris left on the battlefield are all old, even rusted beyond recognition, but the traces of the battle are new. How could there be such a contradictory thing.

"Could it be caused by some kind of activated matter?" Li Luo guessed.

"It is very likely." Zhou Chao looked at this weird battlefield and nodded.

However, neither of them noticed that in the distance blocked by the ruins, an invisible sharp blade suddenly chopped through a tree, splitting it in half instantly.

Then, several claw marks appeared out of thin air on the broken tree trunk, completely turning the fallen tree into pieces.

There seemed to be a group of invisible enemies on this battlefield...