Lu Yuan wasted a lot of effort before he opened the door and walked in.

Perhaps because of the negative pressure, although Lu Yuan opened the door, the seawater did not flow into the door.

Lu Yuan took a few steps forward, and there was a loud bang behind him.

The gate of the passage was closed again, because the movement was so huge, Lu Yuan was startled.

Lu Yuan froze and ignored the gate behind him, but continued to walk forward.

This passage is completely made of memory metal, and walking in the passage, Lu Yuan can't help but admire the Kiatlantis people.

Just such a seemingly ordinary passage already shows the advanced level of technology of the Atlanteans.

Perhaps because the energy has been depleted, there is not a trace of light in the tunnel.

However, whether there is light or not has no effect on Lu Yuan's actions.

Lu Yuan walked slowly in the long passage, and after about a quarter of an hour, a glimmer of light finally appeared in front of him.

Lu Yuan couldn't help but speed up his pace and walked towards the light.

Walking and landing, Lu Yuan's eyes suddenly became brighter.

A huge hall appeared in front of Lu Yuan's eyes.

But soon he frowned, and he found that the hall in front of him was full of bones.

With just a rough estimate, Lu Yuan came up with a figure that made him jaw-dropping.

The death toll in the hall will not be less than a thousand.

Many of these corpses in the hall were incomplete, and after a brief observation, Lu Yuan came to the conclusion that these people died in battle.

They were surrounded by a variety of broken weapons, and among the corpses were some beings who were clearly different from humans.

Lu Yuan suppressed the horror in his heart and walked into the hall.

Because there were so many corpses, Lu Yuan felt that there was nowhere to stay.

It took a whole hour for Lu Yuan to barely walk around the hall.

After this lap, Lu Yuan discovered something special.

Some of these corpses are completely non-human, and although they are also humanoid as a whole, their heads and bodies are far from humans.

And judging by the distribution of the corpses, these humans who died in the hall died in the battle with these things.

Lu Yuan spent another half an hour and found a well-preserved alien corpse in the hall.

The corpse had begun to petrify, and it was clear that it had been a long time since the battle took place.

Lu Yuan reluctantly cleared a clearing, and then began to study the bones.

Lu Yuan used a computer to scan the bones, and then used software to restore the remains.

Looking at the picture in front of him, Lu Yuan's heart couldn't calm down for a long time.

If you have played the game World of Warcraft, you will definitely be familiar with the pictures in front of you.

The image that appears on the picture is clearly an orc, except that this orc has an extra tail behind him.

"Could it be that it was such a group of orcs who fought with the earthlings back then", Lu Yuan secretly said in his heart.

Lu Yuan slowly got up and collected the alien corpse into the space.

He was about to leave and continue inside, but he had already noticed that there was a portal on the east and west sides of the hall.

But after a few steps, he stopped again.

He then took out his tools and began digging in the northwest corner of the hall.

It took him more than half a day to catch the power of the excavator, and he finally dug two big pits.

Then Lu Yuan began to clean up the corpses in the hall.

Lu Yuan first put the dead human corpses in the hall into the pit one by one.

Because there were too many corpses, it took 5 floors to fill up.

At this time, Lu Yuan also came up with a number: There were 1,378 humans who died in the hall.

These people who died were all physically traumatized and died.

The bones on their bodies have all kinds of cracks.

After burying the dead humans, Lu Yuan began to clean up the corpses of the alien orcs again.

The number of orcs who died was significantly lower, and after the final cleanup, there were only 164.

It can also be seen from this that in the battle that year, the combat effectiveness of orcs was significantly stronger than that of humans.

After finally cleaning up all the corpses, Lu Yuan looked at the time and saw that it was already three o'clock in the morning the next day.

He took a brief break and walked first to the east portal.

Because the door had been damaged, Lu Yuan entered the room without much effort.

There is only one tower-shaped building in this room, and nothing else.

"What is this thing for?" Lu Yuan looked curiously at the tower-shaped building in front of him.

Although it was impossible to confirm what the tower-shaped building in front of him was for a while, Lu Yuan still knew its extraordinaryness from its appearance.

I don't know how many years have passed, but there is still energy flowing in the tower.

After Lu Yuan took some observations of it, he found that there were two huge magnetos inside this tower-shaped building.

Not only that, but these two magnetos also contain huge energy.

This discovery shocked Lu Yuan very much, what the hell is this tower-shaped building, it needs such a huge two magnetos.

After so many years of research, Lu Yuan has long understood that the energy contained in such two magnetolites is even greater than the energy of all the nuclear reactors of modern human beings combined.

Something that needs to be driven by such a huge amount of energy is absolutely very important when you think about it.

It's a pity that after three days of research, Lu Yuan was still unable to figure out the role of this huge tower-shaped building.

In desperation, he had to leave the house for the time being, and went to the western portal.

Although the door on the west side was not damaged, it could not block Lu Yuan.

After entering the house, what appeared in front of Lu Yuan was also a tower-shaped building.

However, this tower is significantly smaller than the one on the east side.

It is also powered by magnetite, but there is only one magnetite at its core.

Moreover, this magnetoite is much smaller, only a little larger than the few pieces that Lu Yuan obtained before.

"It seems that these two tower-shaped buildings have the same function, but I don't know what they are used for!"

Lu Yuan couldn't help but ponder again.

At this time, he suddenly accidentally noticed that the ground in front of the tower-shaped building in front of him was a little different.

After Lu Yuan stepped forward to inspect it, he found that there were obvious signs that many people had stepped on it in front of the tower-shaped building.

"What are these people doing in this position?"

Lu Yuan thought about it while looking at the building in front of him.

At this time, he suddenly realized that standing in this place, he was right in front of something that looked like a launcher.

Not only that, but there's a button-like thing right in front of it.

After Lu Yuan observed, he gritted his teeth and decided to take the risk of activating this building to try it out and see what it was for.

Although he had already made a decision in his heart, Lu Yuan still felt a trace of nervousness.

He stood in front of the building, hesitated for a long time, and finally gritted his teeth and pressed the button......