Mobile City Travel Guide

When the altitude reached 30000 meters, there were very few of the accompanying aerial vehicles left.

Compared to mobile cities, the vehicles of the air traveler do not have such sufficient power and configuration.

Li Xin looked down and saw the black mist still surging endlessly. It was like a giant beast that could never be satiated, its gaping maw licking at the sky they had just climbed up, inch by inch.

He gritted his teeth and looked up at the sea of ​​clouds that was only a few thousand meters away overhead.

"There's no other way, let's keep pushing forward and see if we can break through the sea of ​​clouds this time!"

Thanks to buoyancy this time, the Starfire's secondary engines and overload mode have been retained.

With a roar, the Starfire continued its ascent, finally plunging into the sea of ​​clouds. This mobile city surged forward through the rolling clouds, with thick, impenetrable fog rushing past the windows.

The remaining few airships hesitated for a moment, but eventually gritted their teeth and followed.

As time went on, the auxiliary engines and overload mode were activated one after another, giving the Starfire even stronger power. Its hull trembled violently in the clouds, the roar of the engines was so sharp it almost tore eardrums, and the numbers on the altimeter jumped wildly.

The feeling of parting from the new place has become increasingly intense without me even realizing it.

He knew very well that crossing the sea of ​​clouds would only provide temporary shelter. Beyond it lay the unobstructed atmosphere, where radiation such as solar winds, cosmic rays, ultraviolet rays, and high-energy particle streams would pour down without any obstruction.

But the Starfire couldn't stop.

The black mist continued to chase after them, and everyone could still hear its laughter.

"Never mind all that!" he gritted his teeth. "Just keep charging forward, even if it means dying!"

The ship suddenly felt lighter, the clouds behind it abruptly dispersed, and the view opened up dramatically.

As I took my breath, I suddenly felt a sharp pause.

None of the anticipated scenarios—radiation, solar wind, high-energy particle bombardment—came to be.

What comes into view is a vast, dark space of earth and stone.

In the far distance, at the edge of space, there exists a colossal, dark red sphere. Its surface is covered with cracked lines, within which flows a dark golden, magma-like light, and the intense heat it emits even distorts the air itself.

"This is... the Earth's core? We've reached the Earth's center?" he murmured.

In an instant, an incredulous and utterly astonished feeling exploded in his mind.

It's the opposite! The entire aerial world is reversed! The sea of ​​clouds overhead is actually the ground, and the black fog below is the sky!

Looking down, the sea of ​​clouds below remained calm.

The black mist didn't catch up, and the laughter gradually stopped.

......

"So, the Sky Travel Civilization has always lived in an upside-down world?" Lu Chen asked in surprise in the conference room.

The group of companions looked at each other in bewilderment, while Li Xin slowly nodded.

In retrospect, going "up" was wrong, and going "down" was the right thing to do.

That extremely advanced previous aerial civilization probably chose to break through the black mist precisely because it discovered this.

Unfortunately, they were unable to defeat the strange creature.

The thought of that giant eye reflecting the brilliant yet chaotic starry sky sent chills down his spine.

This is probably an indescribable thing from the stars. It may have enveloped this planet with its own body, greedily and ruthlessly devouring generation after generation of spacefaring civilizations.

"If that's the case, then there's probably not much hope left in this world," he thought to himself.

Every newly formed aerial civilization, due to its ingrained thinking, mistakenly believes that the sky is above the sea of ​​clouds and attempts to break through it. In the process of their development, there is a high possibility that an imbalance of gravity will occur, causing a "high tide" that will lead to their destruction.

Even if they were lucky enough to discover the truth, and even if they developed powerful technology, they might not be able to defeat the Black Mist.

However, this is not something I should worry about, after all, they are just passersby in this world.

"Properly manage food and fresh water supplies, maintain order in the city, and expedite the training of the selected personnel," he said, standing up. "We still have more than ten days to go in this world."

In the days that followed, things became much calmer.

Everyone on the Starfire went about their work, training, and daily life. Li Xin's initial tension gradually subsided. Besides the daily operations of the Starfire, he spent his free time either taking walks in the city or staying in the training cabin.

"Speaking of which, I wonder how the Iron Mole and Sky Traveler K4 are doing," he thought to himself.

This catastrophe nearly destroyed the entire Sky Travel civilization, and it must have also caused enormous casualties to the migrating human civilization.

Upon closer examination, every world has its own destiny, and human civilization is always uncontrollably swept up in it.

As the allotted time was about to end and the final countdown began, Li Xin couldn't help but take a deep breath.

"Please, let's have a better world this time," he prayed silently.

Five, four, three, two, one...

As the countdown ended, he once again plunged into the familiar time tunnel. All the scenes of the Sky World rapidly vanished like shattered paintings, disappearing in a flash.

Soon, a whole new world unfolded before their eyes.

Li Xin stared wide-eyed, carefully examining the world before him.

There are mountains, water, grass, and a clear sky; everything looks wonderful.

When he took off his oxygen mask and tried to breathe, he found the air to be surprisingly good.

However, having learned from the experience of the world of giants, he dared not be careless in the slightest, and everyone had their firearms ready, prepared for battle at any time.

Several minutes later, Li Xin waved his hand with some skepticism.

"All personnel lifted from alert! No problems have been identified so far."

A few seconds later.

"The assessment is complete. The atmospheric composition, gravity, geographical environment, and human home planet of the current world are more than 90% similar, and the probability of the existence of civilization is 95%."

"Air quality is excellent, and the concentrations of particulate matter and pollutants are at extremely low levels."

The city's AI cloud platform will explain this in detail.

What Li Xin was most concerned about was the statement that "the concentration of suspended particulate matter and pollutants is at an extremely low level".

This means that the world may not have yet undergone an industrial revolution. There are no factory chimneys spewing black smoke into the sky, no internal combustion engines rumbling across the ground, and no overwhelming dust and exhaust fumes that would inevitably be produced after the advent of the industrial age.

Therefore, its original civilization was most likely in an extremely backward state, possibly in the agricultural era, or even the primitive stage.

Thinking of this, he couldn't help but scratch his head with some doubt.

Could it be that I've really come to a better world this time?