Earth calendar year 4055.

The first batch of dense hydrogen production line, a material based on strong interaction forces, has been successfully put into operation.

The experience gained from the imperial fortresses has once again saved human civilization from many detours.

The spatial fissure cutting device, combined with precise control of the unified field, can cut and package dense hydrogen materials.

As for how to weld it after cutting...

Academician Ding Chengwang proposed a solution for a special welding device for materials with strong interaction forces.

The entire welding device is equivalent to a small-scale device for producing materials with strong interaction forces.

According to the design, it can operate on the outer layer of starship armor, injecting corresponding particles into the target area through particle nozzles and a unified field to complete the welding and filling of gaps.

same year.

The starships belonging to the sixth-level civilization have also completed their design plans and passed zero-level simulation tests.

One after another, enormous starships began construction in spaceports scattered throughout the Kepler star system.

Just like the difference between stars and planets.

The gap between stellar-class and planetary-class starships is also leapfrog.

Maximum speed increased dramatically from 100c to 900-1000c.

In terms of energy, it is equally impressive. The significant increase in power and energy storage capacity has led to a leap forward in the endurance and range of starships.

Conservative estimates suggest that the combat radius of any starship of stellar class exceeds five thousand light-years.

If paired with a dedicated supply ship, its combat radius could even exceed 10,000 light-years.

If it were just a simple voyage, then this mileage would be even more incredible.

Furthermore, the size of a stellar-class starship far exceeds that of a planetary-class starship.

The average length of the main warships reached 80,000 meters, while the secondary flagship, the Titan Mothership, was over 100,000 meters long!

As for the eternal flagship of human civilization, the Earth, it reached a height of 200,000 meters!

This is true advanced civilization!

Lu Yongchang looked thoughtfully at the data in the holographic projection.

In a sense, a Type VI civilization possessing starships of stellar quality is the true Type VI civilization.

As for human civilization, that goes without saying.

With Lü Yongchang and the technology tree, the human civilization, upon acquiring starships of stellar quality, had already become a true level-six peak civilization!

In an ideal world, the scope of human civilization could cover the entire Milky Way galaxy!

Therefore, from this perspective alone, the Milky Way, this remote little galaxy in the universe, can actually only accommodate a few Level 6 civilizations at most.

A sense of confusion arose in Lü Yongchang's heart.

The Tenth Empire back then...

How exactly did this remote and impoverished place develop into a peak level seven civilization?

The answer is obvious.

It's like raising a venomous insect; in such a resource-scarce environment, only one advanced civilization can survive.

The Tenth Empire will likely be the victor who survives to the end.

Upon reaching the seventh level of civilization, in order to seek opportunities for further development, the Empire had no choice but to leave the Milky Way and venture into a more expansive world.

This would actually be a huge boon for other civilizations in the Milky Way.

Although the empire's departure inevitably took away a large amount of resources, it also gave other civilizations the opportunity to advance once again.

After two hundred thousand years of rest and recuperation, a native Type 6 civilization will inevitably emerge again within the Milky Way.

but……

Why haven't humans encountered a Type 6 civilization yet?

Thinking of the sanitation worker, Wenming, who appeared out of nowhere, a sense of vigilance suddenly arose in Lü Yongchang's heart.

Considering the limited scope of human civilization's activities and its current strength, an idea slowly arose in his mind.

...

"What?!"

"No! I disagree!"

In the Kepler-452b Antarctic region, inside the Central Research Institute of the Human Sciences Academy, Fang Xu's roar suddenly rang out.

"As our development finally gets on the right track, and human civilization has become the most powerful civilization in the surrounding star system..."

"You're telling me now that you're planning to leave the Milky Way and launch an expedition to the Andromeda Galaxy?"

Fang Xu's face flushed red as he waved his hands repeatedly at Lü Yongchang, expressing his opinion: "I disagree! I strongly disagree with this proposal!"

"If you want to leave the Milky Way... then you can leave on your own!"

Perhaps realizing he had spoken too harshly, Fang Xu softened his tone and pointed around:

"Don't even mention me, ask any other academician in the Chinese Academy of Sciences, who would agree to such an outrageous proposal?"

Since human civilization left Earth, this can be said to be the first time Fang Xu has expressed clear opposition to Lü Yongchang's proposal.

Lü Yongchang looked around in the direction Fang Xu was pointing, somewhat helplessly.

As Fang Xu said.

The expressions on the faces of the Class I academicians present varied, with few showing any agreement.

Lu Yongchang sighed deeply: "You can refuse after you've explained your reasons."

Fang Xu's eyes widened in anger as he stared intently at Lü Yongchang in front of him: "..."

Seeing Lü Yongchang's somewhat helpless expression, he took a deep breath and calmed his terrible mood.

"Okay, go ahead!"

"I'd like to hear what you have to say about this!"

Faced with the worried, confused, or bewildered looks of the academicians around him, Lü Yongchang composed himself and gave a brief explanation of his reasoning.

"Regardless of the reasons behind it, this anomaly is not a good thing for human civilization."

"Yes, we have indeed become powerful enough to manipulate the four fundamental forces in the universe, and powerful enough to manipulate the mysterious space."

"But let's not forget that with a wealth of advanced technology, we also face many more unknown phenomena!"

"Leaving aside the Tenth Empire, which has long since left the Milky Way, let's just talk about the Cleaners Civilization and the Pastoral Civilization."

"Although they have disappeared for thousands of years, do you think they have completely vanished?"

Fang Xu fell silent.

As Lü Yongchang said.

The concepts of "cleaner civilization" and "pastoral civilization" have always been a thorn in the side of many.

"But...we haven't found any trace of them yet. What if they've already left?" Fang Xu said, clinging to a sliver of hope.

"If your inference is wrong."

"What if the Tenth Empire two hundred thousand years ago completely drained the Milky Way's potential, and no Level VI civilization has emerged in the Milky Way to this day?"

"Then we can continue to develop within the Milky Way until we have even greater power."

"Just like the Tenth Empire, we will become a Level 7 civilization before leaving the Milky Way."