With Hades's restoration function, everyone is reluctant to study this faded mural anymore. Hades is also very fast, including all the murals and then processing, and soon typed them on the mobile phone screen, not only these murals are colored, but also made into animation, which looks much more vivid.

This long series of murals reflects the establishment of this civilization in its entirety, the first is that the spaceship is wrapped around several huge octopus-like things, the spaceship is imprisoned inside, and the aliens inside are panicked.

The second is a long column of smoke from behind the spaceship to the space near the Earth, the third is on the island, and the aliens are standing outside the spaceship, surrounded by many primitive people with spears, and the fourth is the alien sitting high on the throne, next to many primitive people, and many more primitive people are building cities.

The fifth picture is strange, it is actually led by aliens to fight a three-headed monster; the sixth picture is that the three-headed monster was driven into a volcano, and the alien's flying machine was pressed on it, and below was the fiery red magma; the seventh picture looks like a funeral, the alien is placed on a high platform with his eyes closed, and countless primitive people worship under the high platform.

The eighth picture shows a volcanic eruption, a huge three-headed monster roaring in a crater of hot magma, and countless humans who can no longer be called primitive people are scattering and fleeing.

This is the end of the picture, and the end result is the same as the first time they first saw it, the entire city was buried in the eruption, and the former civilization was covered in the depths of the earth, and then sank to the bottom of the sea.

"Hades, can you detect what age these are works?" Yang Yi asked with a frown.

"I have just done an analysis, and according to the chronology of this side of the earth, these murals should be 10,000 years ago, that is, between 7,000 BC and 10,000 BC. Hades' answer was clear.

"10,000 years ago, could this also be a prehistoric civilization?" Yang Yi said to himself.

"According to the literature division of the earth, then I'm afraid that's it, but this civilization is born with the help of an alien civilization, but it's very rough, if it were me, I would definitely build a civilization that surpasses this civilization countless times!" Hades said stinkingly.

"I haven't perfected your database until now, and it's not a shame to brag about it here!Old Gui, do you know what that three-headed monster is?"

Yang Yi casually said a word to Hades, and then turned his head to ask Xiang Gui Lao, this turtle prime minister has passed countless thousands of years, maybe he will know some things.

"If I don't see this, I can't remember, I did wake up once 10,000 years ago, and I felt a strong alien aura in the boundless South China Sea rushing to the sky, so I probed to the location where the breath was emitted, and I saw this monster, but I just saw him fly away from here and go to the starry sky of the universe outside the earth, because of the sudden incident, there was no pursuit, and now I think it should be the time for these three monsters to destroy this city and leave!"

"Elder Gui, are you sure it's this monster?" asked Ao Zhen next to him.

"Titans, is this one of the ten most powerful races outside the Titan Race?" Elder Gui was startled when he heard Ao Zhen's question.

"Yes, this is the three-headed Titan Clan, you see that their bodies are like apes and they are hundreds of feet tall, but they have three heads, which control the three elements of wind, thunder, and fire, respectively, and they are the powerful race that invaded the earth in the Age of the Immortals - the Three-Headed Titan Clan, which is the main force attacking the Heavenly Court, and many people of my Dragon Clan died in their hands, and it is normal for Gui Lao to be in charge of the Human Realm at that time, so it is normal that he does not know them. Ao Zhen looked at the three-headed monster on the mural and said slowly.

"But isn't the three-headed titan supposed to be in Heaven? How could they come to Earth and collide with this alien?"

Although Gui Lao had heard of the Three-Headed Titans, it was the first time he had seen them.

"It must be the Titan warrior who was injured in the Great War, and when he went to the earth to recuperate, he didn't expect to encounter this alien race, and united with the primitive human race to seal his wealth in the volcano, but they didn't understand the characteristics of the three-headed Titan, and the volcano could help him recover from his injuries quickly, so in the end, when the three-headed Titan recovered, the city established by the aliens suddenly suffered a catastrophe!" Ao Zhen analyzed seriously.

"It seems that this is the most reasonable situation, but really, where will these three Titans go after they leave Earth? Could it be that they are returning to their planet?" Yang Yi asked, touching his chin.

"It may be a return to the race, or it may be to find a place to repair, the three-headed Titan clan is said to be from the Titan Star Field, not a creature of this plane, it should not be very easy to return to the race, the most likely is to find a suitable place in the universe, recuperate and continue to complete the task, after all, the invasion of the Age of the Immortals did not get what they wanted. Ao Zhen said with a deep groan.

"What are these exotic races for, at all of them, who do not hesitate to cross the plane to attack?" Yang Yi's doubts had existed for a long time.

"I don't know!" Ao Zhen replied crisply.

Gui Lao next to him also replied like this at the time, which made Yang Yi couldn't help but touch his brain, the war that affected countless races for billions of years, it sounded like a lot of dead creatures, and no one knew why they were fighting, Yang Yi sometimes felt that this war was also drunk.

"Husband, Zhen'er really doesn't know, the alien is called that thing [source], this is also what I heard by chance, but even those alien races don't know what this [source] looks like, whether it is round or flat, whether it is a treasure or a practice, but the alien race is ferocious and warlike, in this case, it can only resist the invasion through war, our dragon clan has been at war with the exotic race since Lord Zulong, and the two sides have been immortal for countless years!"

After Ao Zhen answered, she didn't feel right, and hurriedly explained to Yang Yi that her knowledge was limited, but a new clue appeared, the foreign invasion was to find something called "source", but neither the alien race nor the dragon clan knew what this "source" was, and it was completely confused for billions of years.

"Don't really care, let's look again and see if there are any other clues. Yang Yi said with a smile.

Everyone agreed to continue walking inward, inside were rooms one by one, these rooms were covered by volcanic ash, in an oxygen-free environment, but they were fairly well preserved, and there were many well-preserved dried corpses, compared to normal humans, these dried corpses obviously had alien characteristics, such as tails or protruding mouths, Yang Yi guessed that it might be the descendants of the combination of aliens and humans, this castle may be the home of these people, and the murals outside should also be left by them.

The six guards were exploring the way ahead, this castle seemed to be very large, but in the eyes of Yang Yi and them, it didn't take long to explore, and there was nothing special, only the things stored in one of the larger rooms attracted everyone's attention.

This is a square box with a metal shell, almost 30 centimeters square, sealed under a glass cover, Yang Yi studied for a while, and found that this glass is a strange thing similar to tempered glass, very strong, which also makes it not damaged in this disaster, but he can't recognize what the iron box inside is.

"How can this piece of glass be opened?" Yang Yi turned around the glass and found that the six sides were one, and there was not even a gap, so he couldn't help but ask strangely.

"It should be okay to smash it open!" Gui Lao also studied it and said.

"Oh, a bunch of violent maniacs, really smash open the contents and ruin it, is this high-tech?" Hades' voice came out.

"Hades, you have itchy skin, I think, believe it or not, just format you, don't think that you can't clean you up after the birth of consciousness!" Gui Lao shouted angrily.

"Old man, you are a violent maniac, always intimidating me, I am not wrong, this is a password box, only by entering the correct password can you get the hard disk inside, without password brute force cracking can only damage the information inside, don't you want to know what is in this hard drive?" Hades's voice trembled a little, but he still said stiffly.

"You say this iron box is a hard drive, a hard drive to store data?" Yang Yi asked without paying attention to Hades's arrogance.

"yes, that's the hard drive left by the aliens!"