Cataclysmic Era: I can unlock the tech tree

One week later.

"Yongchang".

Fang Xu's voice was full of exhaustion: "The atmosphere of Dawn Star has basically stabilized, and we can begin the second phase of transformation."

Like Fang Xu, Lü Yongchang's face was also filled with a deep weariness.

During this week, every researcher at the Chinese Academy of Sciences worked through the night to ensure that the atmosphere of Dawn Star successfully entered a self-circulating and stable state.

Fortunately, their efforts paid off.

To date, the atmosphere of Dawn has successfully entered a stable self-circulating state.

A brand-new water cycle system has been successfully established.

Only now has the Dawn Star terraforming project completed its first step!

The next step is to modify the atmospheric composition of Dawn.

The modification method is also very simple.

"Prepare to launch Atmospheric Transformer One." Lu Yongchang rubbed his face, forcing himself to stay alert, before issuing the order.

"The deployment standards will be strictly implemented according to the plan."

……

A week later, the port gates of City One reopened.

This time, instead of drones, the Xuan Nu II aircraft appeared, arranged in neat rows.

A familiar voice came from the lead ship, the Mysterious Maiden II.

"Finally, we can leave the city!"

Hong Fan's distinctive voice echoed in the cockpit: "I need to go and take a good look at our new home!"

"Be serious."

Before Hong Fan could continue speaking, Bai Yixuan, sitting in the driver's seat, raised an eyebrow and interrupted him: "This isn't a trip for fun."

"If the atmospheric transformation plan goes wrong, not only me, but even Commander Zhao can't save you."

Upon hearing this, Hong Fan subconsciously pursed his lips.

But remembering Lü Yongchang's extremely serious attitude before he left, he straightened up, composed himself, and pressed a few buttons.

"The destination has been determined, and the flight route has been planned."

The ship's weak artificial intelligence system's electronically synthesized voice announced: "Acceleration is about to begin, please fasten your seatbelts..."

……

Originally the A3 region of Dawn Star, now the new Pacific coastal region.

A black ship, the Xuan Nu II, traced a graceful curve and slowly hovered above the sea.

"Call the command center."

"I have arrived at the target location and am ready to deploy Atmospheric Transformer 1 at any time."

Bai Yixuan said in a deep voice.

"Deployment approved."

With virtually no delay, zero-delay electronic synthesized sound emanated from the radio communication device.

Upon hearing the instruction, Hong Fan, who was in charge of operating the projection device, pressed the virtual button on the holographic projection without hesitation.

"Atmospheric Transformer One, dosage 1%".

next second.

The cabin of the Xuan Nu II aircraft trembled slightly, and its belly hatch suddenly opened.

A light green substance cascaded down from the hatch, splashing up huge waves on the slightly rippling sea.

The so-called Atmosphere Modifier 1 is a genetically modified cyanobacterial-like organism from the Ross 154 star system.

After genetic modification, they not only retained their original extremely strong nitrogen-fixing ability, but also enhanced their photosynthetic and reproductive capabilities.

Ideally, the cyanobacteria released in this operation could cover all the waters on Dawn Star within a year.

To prevent it from growing excessively, Academician Mao Zhengzhi painstakingly added a "self-destruct gene" to its genome.

When the external oxygen content reaches a preset standard, these cyanobacteria-like organisms will immediately initiate a self-destruction process.

Within a week, all the cyanobacteria will die.

As for the "corpses" after death, they will become the first fertilizer on Dawn Star, creating a perfect growth environment for the subsequent Earth organisms to settle in.

However, among its many advantages, there is one undeniable drawback—it has extremely demanding requirements for the planetary environment.

First, the colonized planets would require a large amount of water resources.

The more water resources a planet has, the faster its atmosphere can be altered.

Secondly, as nitrogen-fixing organisms, they require a sufficient amount of nitrogen in the planet's atmosphere.

Of course, there must also be a certain amount of carbon dioxide in the atmosphere; otherwise, these cyanobacteria-like organisms would lack the raw materials for photosynthesis and would not be able to produce oxygen out of thin air.

These rigid requirements significantly limit the size of its performance stage.

It was precisely because of this awareness that the project to improve Atmospheric Transformer 1 had already been approved long ago.

"Atmospheric Transformer No. 1 has been deployed." Bai Yixuan checked the warehouse inventory and reported back to his superior.

"Scanning algae density in the target water area, please wait..."

The moment the electronic synthesized sound of "Zero" rang out, the scanning device on the abdomen of the Xuan Nu II automatically turned on, continuously scanning the sea surface below.

A few seconds later.

"The algae density has reached the standard; add nutrients immediately."

"The distribution ratio has been calculated."

Hong Fan glanced at the holographic image in front of him and carefully adjusted the parameters of the projection device.

After checking several times, he reached out and pressed another virtual button.

"Nutritions have been successfully delivered." After confirming the successful delivery of nutrients via the ship's onboard camera, Bai Yixuan reported again.

"Confirmed." After a short wait, the synthesized voice sounded again.

"The deployment target in area A3-c008 has been achieved. Please proceed to area A3-c009 immediately to complete the deployment task."

After lingering for a long time, the dark blue light at the tail of the Xuan Nu No. 2 brightened a bit, and it left the spot in a graceful arc.

The camera slowly pans down.

In the azure new Pacific Ocean, a green substance is slowly spreading.

Before long, the seawater returned to its original clear and transparent state, looking as if nothing had happened.

However, in the world that is invisible to the naked eye.

Under the sunlight, strings of tiny bubbles continuously emerge from the shallow seawater.

After surfacing, the bubble burst suddenly, and the gas inside entered the atmosphere of Dawn Star.

……

March 5, 2386 (Earth Calendar)

Headquarters of the All-China Federation of Liberation Sciences.

Lu Yongchang stood quietly in the command hall, looking at the holographic image in front of him.

A giant holographic projection displays real-time images from satellites.

Unlike Dawn Star a year and a half ago, Dawn Star now presents an extremely strange hue—green mixed with yellowish-brown.

The yellowish-brown color naturally represents the barren landmass on Dawn Star.

The green area represents the ocean region of Dawn Star.

After a year and a half of development, the oceans on Dawn Star have been completely occupied by Atmosphere Changer 1.

Every moment, they absorb nitrogen from the atmosphere and convert carbon dioxide into oxygen through photosynthesis.

"Professor, I have bad news."

Zero's virtual image slowly appeared beside Lü Yongchang, and a familiar electronic synthesized voice came from the speaker.