Cataclysmic Era: I can unlock the tech tree

Another silence followed.

Not receiving the response she wanted, a hint of disappointment appeared in Su Yutong's eyes, and the smile on her face gradually faded.

Just as she was about to find a topic to smooth things over, Lü Yongchang's voice suddenly rang out.

"I hope that when I'm 200 years old, I can receive your cake."

"And, there are still 300 years, 400 years..."

Lu Yongchang's voice grew weaker and weaker, until finally it was as faint as a mosquito's buzz.

But to Su Yutong, it was the most beautiful sound she had heard in decades!

A look of surprise flashed in her eyes!

"good!"

Her cheeks flushed slightly, her eyes sparkled, and she responded softly.

Faced with Su Yutong's incredibly intense gaze, Lü Yongchang subconsciously shifted his gaze.

Even though his brain had been continuously enhanced by the system, he still felt a dizziness, as if he were drunk.

"Right now, my hormone levels must be very high, right?"

A thought suddenly popped into Lü Yongchang's mind.

Then, the thought kept drifting away.

Are hormones really that effective in the human body?

Does the body's consciousness influence hormones, or do hormones influence consciousness?

"If I were only left with consciousness, would I still be able to feel this way?"

"..."

"Professor? Professor?"

Seeing Lü Yongchang standing there in a daze, Su Yutong's eyes flashed with a hint of doubt. She held out her hand and waved it in front of him: "What are you thinking about?"

Lü Yongchang suddenly came to his senses.

Looking at Su Yutong, whose cheeks were still slightly flushed, he panicked.

What should I do?

Should I tell her that I'm thinking about the relationship between hormones and consciousness?!

You'll die!

No matter which aspect, you will die!

"cough!"

Lu Yongchang coughed forcefully, and his brain, enhanced by the system, began to work frantically.

"Yes, that's right."

As Lü Yongchang reached for the small cake in front of him, he said urgently, "I suddenly had an idea!"

"I need to go to the office!"

Su Yutong was stunned for a moment.

Although she felt something was off, thinking about Lü Yongchang's past behavior, she still smiled and said, "Okay."

"I should get back to work."

Watching Su Yutong turn and leave, Lü Yongchang breathed a long sigh of relief.

"Professor, is this love?"

Suddenly, Zero's voice came from beside me.

"..."

Within seconds, Lü Yongchang's face turned a shade redder.

"How...how can this be love?"

"However, based on my observation, your current behavioral patterns are very similar to Professor Su Yutong's..."

"Shut up!" Lu Yongchang shouted in a low voice, his tone forceful.

Then, unconsciously walking towards his office, he muttered under his breath, his face flushed, "How can this be called love?"

"Can something between researchers be called love?"

……

Two years later.

Viewed from above, the entire landscape appears as a yellowish-brown, desolate expanse, with a thin "ribbon" winding across it.

That was a wide freshwater river named Ross River.

Data from the survey shows that the Ross River is 4103 kilometers long.

The starting point is a snow-capped mountain near the equator.

As the melting snow continued to accumulate, it gradually formed this wide river that stretches for more than 4,000 kilometers!

The Ross River has an average width of 82 kilometers, reaching a maximum width of 230 kilometers.

The average depth is 11.4 meters, and the deepest point reaches 37 meters!

Although it is the only freshwater source on the surface of Ross 2, its vast water reserves are more than enough to meet the needs of human civilization.

After all, compared to before, after becoming an interstellar civilization, humanity has greatly improved the recycling rate of water resources.

Beside this ribbon that stretches for thousands of kilometers, a single drop of silvery-white pearl suddenly appears.

That was the first city built by humankind—Central City!

In just two short years.

A huge hemispherical building rises up beside this wide river!

An overall framework made of carbyne, plus a skin made of carbon nanotube material...

It's no exaggeration to say that this central city could even withstand the impact of some small meteorites!

Meanwhile, on the opposite bank of the Ross River next to the city center, construction on a second city began not long ago.

If you zoom in, you can even see a huge army of robots and robotic arms on the foundation!

Under Zero's command, these robots and robotic arms worked tirelessly day and night.

Meanwhile, the construction of City 2 is progressing at a visible pace!

……

Above Ross 2.

【Earth】Port.

One by one, researchers in spacesuits walked in neat rows toward the Xuan Nu II spacecraft in front of them.

Through the glass masks, you could clearly see the anticipation and excitement in everyone's eyes!

Since leaving Earth, humanity's most perfect place to live is right before our eyes!

"Finally, we can live a peaceful life!"

Tao Yuda, who was in the queue, had a face full of joy.

Because he was wearing a helmet, He Bilin, who was next to him, did not hear him talking to himself.

From He Bilin's perspective, Tao Yuda was muttering something with a "perverted" look on his face.

Although Tao Yuda was his elder, he still reached out and tapped the helmet in front of him without any hesitation.

"laugh……"

A hissing sound came from inside the helmet.

The two connected to a private communication channel.

"What's wrong?" Tao Yuda asked, looking bewildered.

So… He Bilin described the scene he had just witnessed with an extremely disgusted expression.

"Isn't it just landing on a planet?"

"Academician Tao, is it really necessary to be so excited?"

Tao Yuda chuckled awkwardly, then looked at He Bilin with a complicated expression.

"Why……"

He sighed softly.

"After so many years, I can finally stand on the yellow earth again and see the blue sky and white clouds... You would never understand this feeling."

He Bilin curled his lip: "What's the big deal... Can't you see that anytime in a holographic theater?"

Tao Yuda's gaze grew increasingly complex.

He shook his head repeatedly: "It's different."

"It's a pity that the environment of Ross II is not suitable for human survival, otherwise, I would take you out for a walk and you would understand."

"Imagine being on a lush meadow, with a verdant forest in the distance, under a bright sun, blue sky and white clouds, feeling the gentle breeze on your face..."

"That's the breath of freedom!"

He Bilin was silent for a while, then spoke again.

"The starship's fresh air system, high-powered daylight lamps, and holographic cinema can all be perfectly displayed."

Tao Yuda sighed deeply.

He didn't explain further, but simply reached out and patted him on the shoulder: "I hope that one day you will feel true freedom."

After saying that, he turned around and followed the group forward.

Watching Tao Yuda's retreating figure, He Bilin's doubts deepened.