Age of Cataclysm: I can light up the technology tree

"professor."

"Although high-pressure environments can significantly improve the body's absorption efficiency of oxygen."

"but,"

"According to testing, the concentration of carbon dioxide in Dawn Star's atmosphere is 1.14%. Even if all of it is converted into oxygen, the oxygen concentration is not enough to support normal human activities."

Fan Yi frowned and said: "I think that in addition to relying on biological effects, large-scale atmospheric modification work is still essential."

“Even if it requires a lot of resources, this is a step that cannot be skipped.”

The corners of Lu Yongchang's mouth raised slightly, and a mysterious smile appeared on his face.

"Have you forgotten the layer of hematite covering the surface of Dawn Star?"

Fan Yi couldn't help but be stunned.

Suddenly, he seemed to realize something, and his expression suddenly became excited!

He clasped his hands together and murmured excitedly: "Yes, yes, there is hematite!"

"Carbon and iron oxide react in a high-temperature environment to produce elemental iron and carbon dioxide."

"The carbon dioxide produced is then converted into oxygen through the photosynthesis of Ross 154 nitrogen-fixing cyanobacteria."

Fan Yi suddenly raised his head and looked at Lu Yongchang in front of him with burning eyes: "This, this is simply a perfect cycle!"

"Correct answer." Lu Yongchang said with a smile, "In this way, planetary transformation will not only not slow down our development speed, but will even have a certain promoting effect."

"When various infrastructure constructions are completed, the atmospheric composition of Dawn Star will slowly approach the Earth."

"And we just have to pay a certain amount of waiting time."

Speaking of this, Lu Yongchang shrugged: "Of course, the whole process is definitely not that simple."

"The process of transforming the surface environment of the entire planet will involve a large number of uncertain factors."

"Next, our main job is to build a complete planetary model, make all preparations, and wait for Nero's arrival."

"As for the transformation of nitrogen-fixing cyanobacteria, the biological laboratory is already working on it."

…

The central region of the Milky Way.

Just like hundreds of years ago, the artificial planets belonging to the Sweeper civilization still stayed in place motionless.

No rotation, no revolution, no gravity...

There is no way to observe the existence of this planet except by observing it with the naked eye.

It is like a virtual projection, quietly staying in the center of the Milky Way, declaring its sovereignty to the surroundings.

Inside the artificial planet, there is a bizarre scene.

Screens of light flashed, presenting information from all corners of the galaxy.

Cleaner 9527, surrounded by light curtains, sat lazily on a chair.

"Sir, the detector found an abnormality in the target area."

An obscure voice sounded inside the artificial planet.

"What?" Cleaner 9527's visual organs quickly looked in the direction of the sound.

"A black dwarf star." The obscure voice sounded again.

"Oh?" A look of surprise flashed across the face of Cleaner 9527, who was originally slumped in his seat. He straightened up and waved his tentacles to control the light curtain in front of him.

"Black Dwarf..."

"Have you searched it?"

"Is it in our astral database?"

"No." After a moment of silence, the subordinate reported again in an extremely obscure tone, "In the star database, there are no black dwarfs in this area."

The voice paused and then sounded again: "At least, there are no black dwarfs recorded within a thousand light years."

Sweeper 9527's tentacles waved in the air subconsciously.

It was his way of expressing excitement.

"Finally can't hide it anymore..."

He quickly moved the light curtain in front of him with his tentacles and murmured to himself: "A black dwarf appeared out of thin air. Are you ready to absorb energy and fight to the death?"

"Sir, what do you mean..." There was a hint of doubt in the subordinate's voice, "This is made of [painting]?"

Sweeper 9527 did not answer, but the amplitude of his tentacle waving became wider and wider.

Obviously, the information on the light screen made him more and more excited!

"Found it."

"KZQXD771, a red dwarf star, has an estimated remaining life of 1.5 trillion years." Sweeper 9527 murmured in a low voice while dancing.

"Sir?" His subordinates became more and more confused, "Extracting and utilizing stellar energy should be a necessary technology for level six civilizations."

"Although the Milky Way is a bit remote, there are still some level six civilizations."

“How are you sure this is [painting]?”

The movement of Sweeper 9527's tentacles slowed down a bit.

He turned his head and looked at his subordinates with a strange expression: "Are you... sure that the technology mastered by a sixth-level civilization can turn a red dwarf star into a black dwarf star within two hundred years?"

"Let alone a sixth-level civilization, even a star devourer would have a hard time accomplishing this."

"Two hundred years?!" The subordinate was stunned and exclaimed, "How is this possible?!"

Sweeper 9527's tentacles moved slightly and dragged a light curtain in front of his subordinate: "The last time the detector observed the star KZQXD771 was two hundred years ago."

"At that time, it was an extremely young and healthy red dwarf star."

"In two hundred years, completely drain the energy of a red dwarf star..."

"The large mass-energy conversion device of the mother civilization can do it easily."

"But it is in our warehouse."

"Except for [Painting], I can't think of any other civilization in the Milky Way that has such strength."

"But..." The subordinate hesitated, "Why would it do this?"

"I mean, it can absorb energy secretly, instead of so blatantly..."

Sweeper 9527 looked a little gloomy.

"That's easy to guess."

"Maybe its injuries are too serious and it urgently needs a lot of energy to repair itself."

"Or maybe...it has recovered from its injuries and is fully preparing for war."

"No matter which one it is, it is what we are looking forward to."

"After waiting for so long, this war can finally come to an end!"

At this point, Sweeper 9527 stood up from his seat and his tentacles swept across a light curtain again.

"Order."

"All detectors within a thousand light years of the star KZQXD771 enter the curvature state."

"I need to get all the data of the black dwarf in the shortest possible time."

Sweeper 9527 pondered for a moment and said again: "Start the planetary fortress and prepare for war."

As soon as the voice fell, the atmosphere in the artificial planet suddenly became solemn.

"Yes!"

At the same time.

The artificial planet that was originally stationary in the universe slowly turned.