In this way, a "crystal giant turtle" was tamed, bringing new fun to life.

Traveling is sometimes full of surprises.

When you want to replenish energy, you find a bunch of minerals; when you want to mine, you catch another pet.

The turtle's divine attribute is only 0, which is considered a relatively smart type, but it is basically impossible to learn human language.

It can be used as a mount, not afraid of the cold, has great strength, and can also find various mineral veins, but it is a little courageous and shed tears at any time - the tears can be regarded as extraordinary things, which is amazing!

Lu Yuan calculated that if he calculated based on an epoch of ten thousand years, this guy would have to swallow at least 200,000 minerals with spiritual charm in one epoch!

If it lived for three epochs, it would eat 600,000 spiritual charms.

No wonder it is so huge!

"It's all my money." Lu Yuan wailed in his heart. He has never made so much in his life!

However, he did not intend to bring the crystal giant turtle back to Green City.

On the one hand, people will definitely be curious why the crystal giant turtle is so obedient? Why did it tame a strange phenomenon after going out?

This reason is not easy to find.

[Driver] is a ability that is taboo, and rash exposure will cause a lot of trouble.

On the other hand, the crystal giant turtle has other uses.

This turtle has excellent defense ability, and its extraordinary level of level 16 can also scare all civilizations. It also has the ability to escape with earth escape. It is most suitable for carrying [Temple of Greed]!

That's right, he wants to put the [Temple of Greedy] on the back of the turtle!

"Let the crystal giant turtle escape from time to time and appear in major locations in the northern border, which can not only benefit all races, but also maintain a sufficient sense of mystery. It is a win-win situation."

...

On this day, Lu Yuan, who was rushing and mining, finally arrived at the legendary "Ocean of the North".

It was an endless ocean of liquid nitrogen and liquid oxygen, with large tracts of dry ice floating on the sea surface.

The minimum temperature dropped to minus 230 degrees Celsius. This temperature was really too low, and most of the air had become solid.

Only a small amount of rare gases, helium and neon can remain gaseous.

The sky is gray, the sun always stays at the horizon, the faint sunlight cannot penetrate the clouds, and the aurora appears abnormally frequently.

Lu Yuan also found some unmanned detection equipment in the nearby soil, such as drones, hot air balloons, and some bionic puppets, all of which were frozen.

All the parts inside are damaged and have no great scientific research value.

The northern civilizations of previous generations actually found ways to explore this vast ocean, and finally could only sigh.

Even the powerful physique like the Greedy Demon God has to activate the "eternal fire" for a long time to ensure the warmth of his body.

The cruel cold can almost destroy everything.

"The atmospheric pressure here is only one thousandth of that of the normal state, and the oxygen content is also seriously insufficient."

"There are no other ways for humans to do now."

As the air gradually becomes thinner and the buoyancy provided by the atmosphere is greatly reduced, the anti-gravity system of Pandora crystal will gradually fail.

If humans want to cross the northern border, they have to develop spaceship-level engines, bring the Sky City into space, and then transfer from space to Pangu Continent.

Miss Conch hid in the space capsule and discussed: "The giant engine is not realistic... If you want to support a city, it will be too difficult to use materialism. Instead, it is possible to use the idealistic technology of Pangu Continent's powerful idealism.

”

"The northern border is really a unique place. The civilizations outside cannot enter, and the ones inside cannot go out. Naturally, the number of natural disasters is smaller."

Only the giant crystal turtle, with a bloody mouth open, looking like a fish in water.

It is a natural vision here.

"You can wait for me for a moment."

Lu Yuan didn't want to swim in such a cold deep sea, nor did he want to spend money to fly... The air here is thin, and it would cost more spiritual charm to use the "hurricane".

So he "creaked" and shrunk his body, from a 300-meter giant to a height of 10 meters.

In the round and puzzled eyes of the crystal giant tortoise, Lu Yuan rode up without hesitation with the space capsule on his back and patted his head: "Let's go! Why are you stunned?"

The crystal giant turtle is quickly ground in the water, and its limbs are fluttering quickly. It is worthy of being able to control the cold vision. Every time it slides, pieces of black ice will rise under its feet, looking like it is sliding on a leaf of ice.

Two hours later, the sun that had been hanging on the skyline finally came to an end.

The sun suddenly disappeared and turned into the extreme night.

Countless bright stars hang above the sky, and it is a brilliant galaxy.

After swimming for about five hours, Lu Yuan saw a small island emitting heat. In this unpredictable ocean of liquid nitrogen, a high island was particularly obvious.

This is an ocean volcano, the only geotropic zone that emits heat within a radius of thousands of miles, and it is also the final destination of their trip.

"Stop in front."

A group of people walked up the snowy island.

The once active volcano is dead and no magma will erupt again.

The geothermal energy, which is more tenacious than weeds, has also shrunk into the volcano, retaining only the last remaining heat.

The relics left by ancient times were roaring in the strong wind, and the broken cloth strips were written with blurred words, floating towards the sky with thin air - [Gold and Copper Civilization Sanctuary], probably these words

.

"It turns out that those civilizations of strange people are called the 'Gold and Copper Civilization'...

Lu Yuan surrounded the surroundings and searched casually, and soon found the gate of the ruins under a glacier.

It was an ancient titanium alloy door, and time did not bring any rust. The densely packed gear-like glyph proved that the article was clearly an alien civilization.

There is also a metal monument made of titanium alloy nearby.

The omnipotent secretary-general, Miss Conch, studied for a long time and translated: [This is a shelter left by the gold and bronze civilization, and contains most of the research materials of our civilization.]

[The key is required to open normally. If you forcefully break into the door, it will cause internal information to be destroyed.]

[Please contact the stranger left by my civilization to get the corresponding key.]

[If all the remaining strangers of our tribe die, the ruins will be opened automatically and all the relics will be given to future generations. There is no need to thank us, everything is determined by heaven.]

[Please note: Some encrypted content is a taboo secret, please consider whether to read it yourself.]

Lu Yuan let out a sigh of relief. The gold and bronze civilization of the aliens is theoretically just a level 4 civilization, but it can leave taboo secrets. The big reason is that this ghost place... is so fucking cold.

"[The Immortal King] should have a dark connection with this ruin. Once the [The Immortal King] is destroyed, the ruins will open. What is probably what it means?"

"Roar! Roar!" The giant crystal turtle howled at a lump of feces, as if expressing that it had stayed on this island and left its own excrement.

"You go to the seabed to play by yourself. We will stay here for a while."

Conch uses the ability of "animal affinity" to comfort the crystal giant tortoise.

She was wearing a thick space suit and a glass helmet, but even with such a bloated dress, she still looked quite cute.

"Ahhh!" The crystal giant turtle quickly dived into the bottom of the water and went to dig the mineral.

...

Soon, Lu Yuan broke through the thick ice layer, gave Yi Ren his Rubik's Cube key, and inserted it into a groove.

With a light "click", the key burst into colorful light and automatically made various complex changes.

About 3 minutes later, the ruins gate opened, revealing the internal passage of the black hole.

However, this passage is only 4 meters high, and the Greedy Demon God is too huge to get in.

"I'll enter with human body, and you'll wait outside for a while."

"If something happens, you can directly call on the greedy demon god, and I can remotely control it."

Lu Yuan is not afraid of death, but Miss Conch only has one life and must not die with her.

The girl nodded and returned to the room: "I connect to you with telepathy, be careful."

Lu Yuan returned to the human body, put on a bulky space suit, and entered the passage.

The black corridor depicts the arduous journey of gold and bronze civilization.

The engraver of the mural has a high artistic attainment, and all kinds of marks are picked up at will, allowing people to enter the ancient and wilderness era.

It was really a difficult and dangerous history. From the Bronze Age, the head of the giant beast killed by the King of Gold and Bronze personally hung it high at the gate of the city.

By the Silver Age, the magma river in the forging area rushed endlessly, and countless workers created huge cities.

In the Golden Age, the sky city rose slowly, and in the large cellar alone, there were three million wooden barrels buried, with fine wine comparable to fairy wine. The drunken guard leaned against the door of the treasure house of the carved treasure house.

Snoring, the Ku Nei seals their carefully crafted legendary masterpieces.

Then there was the Diamond Age, where [The Immortal King] was created from the depths of the earth veins, which meant that they had become a powerful fourth-level civilization.

Finally... it is the era of great destruction.

At the end of the mural, you can clearly see the gear group floating in the air, and each cog contains fragments of war.

The burning city fell into the ocean, and a large number of giant gods were entangled and disintegrated by vague things.

[Long live the gold and bronze civilization! Long live! Long live! Long live!]

A row of bright red characters, with a strong sadness, bounced out of Lu Yuan's immersive state.

"What a... amazing art." Lu Yuan patted his heart and described the scene he saw in telepathy. "The last line of words has the blood and life he spewed out."

"This artist did not leave with the text, but instead painted here, hoping to leave a mark of history."

"well……"

"It seems that there will not be too many risks inside." The conch voice came, "because this remains are related to the historical marks of the gold and bronze civilization."

"It's like there are three deaths in total, among which deaths at the historical level are the most important. The gold and bronze civilization left these information so that later generations can remember them."

"So they probably won't do some dangerous institutions."

"It's true in theory." Lu Yuan let out a light breath and continued to move forward.

Soon he came to a bronze door. This was a complex code lock that needed to be deciphered with various glyphs, perhaps to examine the glyphs of the entrants?

However, for the master of craftsmen, these things are as simple as elementary school mathematics. In less than two minutes, Lu Yuan undoes the password.

The door opened with a bang, and dust fluttered, creating a phantom of time.

Lu Yuan's pupils contracted.

Inside are... all kinds of "giant god weapons" holding tools, covering the entire playground.

At first glance, there may be as many as ten thousand!

These guys have different functions. Some hold hammers and drills, which are of tool type; some hold rune rifles and cannons; and even hold cold weapons and shields.

This silent legion, traveling through an era, still exudes shocking power, as if reminding future generations that under the dust of history, please remember our existence.

There is also a spherical device at the front, with a diameter of 5 meters. It should be the central main engine that controls these giant god weapons.

"This wealth is not small."

"It's a pity, it's useless to me. Leave it to humans and dwarves."

Lu Yuan did not rashly touch these robots and walked inside.

In the next room, there are chassis and bookcases more than 2 meters high.

Lu Yuan casually searched for the book and read it for a while, with various cartoon pictures on it, which may be fairy tale books of "gold and bronze civilization".

["Mom, mom, the sun is rising!" The dwarf rabbit jumped to her side, with her furry ears trembling.]

【Mom rabbit is sorting out carrots in the storage room. When she heard the sound of Huihui, she turned around with a smile: "Then we are going to pick mushrooms quickly."】

【…】

Lu Yuan actually couldn't quite understand these words, so he guessed a story with pictures.

A faint sadness arose from my heart.

A declining civilization is trying its best to preserve its culture, struggling and working hard.

It's like a drowning man, who goes out of the water with all his might, shouting not "help", but his own name, wanting others to remember him.

However, how many scholars are willing to truly understand the civilizations of later generations?

Most of the civilization remains, even the walls are stripped off and turned into materials for glyphs.

All the famous places and historical sites and historical events are all in ashes.

"The only one who can remember himself is himself..."

Lu Yuan read it for a while and put down the book again.

He looked at the chassis made of black iron and titanium alloy.

In one of the cases, there may be idealistic technology with a level 4 civilization, but it is still useless to Lu Yuan.

Level 4 technology generally requires a lot of heavy industry support, and it is two completely different paths from the Way of Craftsman.

"It's cheaper for humans. When they have the ability in the future, come and get it."

Unexpectedly, he did not find the treasure house.

Maybe it was because it was too urgent at that time that the gold and bronze civilization only left this thing...

After exploring for a long time, Lu Yuan discovered a single room, but this door was so exquisite that it was actually a legendary and extraordinary item!

【Gate of Essence Gold, Legendary Level.】

[A large amount of refined gold materials are used, which can isolate the door to physical detection and idealistic detection.]

There is no mechanism lock.

A complicated line of text was written on the metal nameplate near the gate.

Lu Yuan took out a surveillance device and sent the screen back.

Miss Conch translated: [Connotation taboo information, it takes a lot of acidic liquid to open the door, which will corrode for several years.]

[You need to be careful when opening this door. The more you know, the more dangerous it is.]

In other words, the civilization directly welded the door to death. If you want to open it, you must think twice.

But this matter was not a problem. Lu Yuan took a deep breath and first knocked it a few times.

I used eternal fire to drill through the gap and felt the thickness of the door.

"It's about 22 cm thick."

Immediately afterwards, with a "whoosh" sound, he teleported over.

What comes to me is a small dark room.

With the blessing of the eternal fire in the whole body, the room was illuminated by a red light.

"Huh...this is..."

Lu Yuan widened his eyes, his heart shrank suddenly, and he saw a crystal coffin.

It was filled with a dark red flesh and blood, emitting a taboo and ominous aura. The strange feeling was as colder than the outside world's liquid nitrogen sea.

At this moment, he was frightened for a long time.

This is fear of unknown fate.

Hidden in front of him, he had been pursuing a secret for a long time...

He was afraid that he would not be able to defeat this opponent at all.

I am worried that everything is useless; I am worried that human beings will suffer the same fate...

So at this moment, all kinds of complex emotions surged out, and my mind suddenly "buzzed" a little.

"Don't be nervous..." Fortunately, he was also a warrior who had experienced many battles. He bit his tongue suddenly, and the spicy smell calmed himself a little.

This strange piece of dark red flesh and blood still has vitality after so many years.

Keep squirming, the thousands of blood vessels extend outward, just like snail tentacles.

The various inscriptions on the crystal coffin are densely packed, as small as ants crawling around.

"What? It seems that it is not the flesh on the body of [ghost]... a taboo product?" Lu Yuan was also a master of art and courage. After calming down, he gritted his teeth and peeked for a while.

He imagined Conch reporting safety, but found that both telepathy and the monitoring equipment in his hand were blocked by the legendary gate.

So he could only think carefully through a crystal coffin, and took out several instruments to measure it.

"The ideal energy density of this piece of meat is not high, but its vitality is very tenacious, and it looks a bit like... Tai Sui?"

"If it is bombarded into meat, maybe there is no way to recover like a [ghost]... I don't feel the particularly abnormal idealistic rules."

"What does the Golden Copper Civilization mean? What do you want to tell me? Is this the flesh of the old monsters in the First Era? It is slightly weaker than [Ghost], but wise?"

Lu Yuan was confused and he had an enemy.

There must be a major secret in the first era. Since some of the "myths" have become irrational [ghosts], perhaps another myths have become something else.

For example, a rational [ghost]!

It was obviously more terrifying than [Ghost] and was almost invincible.

But the strength of this piece of meat is far less powerful than he imagined...

It’s not that he is floating around. As a warrior who has been through the battlefield, he still has this judgment. The instruments in his hands also prove this.

"Hmm? Is this a picture carved with carved textiles?"

Lu Yuan observed the mysterious pattern in the crystal coffin: on the earth, there were many strange things in the starry sky, including centipede shapes, Tai Sui shapes, and various irregular sarcoma, which looked like tumors with advanced cancer.

.

But a large group of races were snatching these things - Lu Yuan narrowed his eyes, the picture was a bit abstract, which made him feel a little suspicious.

The floating cities in the sky are firing each other and even starting to annihilate the major races on the ground.

Behind the sky, there is a vague behemoth hidden...

Chaos, weirdness, panic.

The tragic situation at the end of the era was revealed before Lu Yuan.

...

Something stranger happened!

It seemed that he could sense his gaze. The wriggling piece of flesh and blood actually crawled slowly towards the far direction of land like a snail!

For some reason, although this thing was not strong and the speed of crawling was not fast, Lu Yuan was inexplicably frightened, just like a sheep encountered a tiger, which made him sweat in a flash.

Ruddy whispers surged into my mind.

It seems that there is a powerful existence in the dark, looking for himself.

"Oh no, I know too much this time." Lu Yuan gritted his teeth and used [Spread Space] to protect himself.

Then, the moment the piece of meat touched a certain glyph!

A light blue flame suddenly appeared in the crystal coffin!

The flame was extremely hot and burst out with a high temperature of tens of thousands of degrees in an instant!

"boom!"

In just one second, the flesh and blood that was as big as a fist was burned into coke and became the most basic ashes.

Nothing happened during this period, which also confirmed that Lu Yuan's judgment was correct - the intensity of this thing is indeed not high.

And the picture carved in carved textiles was completely burned and no longer existed.

"What's going on?"

"This should be a deliberate mechanism... to avoid me who completely triggers certain dangerous taboo information."

Lu Yuan swallowed, and the air fell into peace.

But he did not dare to remove the alien space and racked his brains to think: "The strength of a thing is not too high, but it can destroy an era in Pangu Continent...What are those cancer-like objects?"

"Where does the taboo information come from? Why does the [ghost] come to chase me after breaking the taboo information?"

Looking around, I found that there was nothing around and there were no more paintings on the walls.

There is only this piece of dusty thing in the entire small room.

No one can discuss it, only think about it yourself.
Chapter completed!