Age of Cataclysm: I can light up the technology tree

In City No. 4, in the central control center, tranquility returned again.

Just, compared with the original.

The tranquility at this time was filled with a strong aura of death.

Ren Feng raised his head and looked at the expressionless Zhang Zhengqing beside him.

"so……"

"Why can't you unplug the power and restart the central computer?"

Zhang Zhengqing couldn't help but hold his breath.

As he walked towards the direction of the ventilation duct, he explained angrily: "That's one!"

"Forcing a power outage and restarting will only turn Yi into a mess!"

"The situation will get worse by then!"

"At least now I'm down instead of disappearing!!"

Ren Feng scratched his head with a smile and quickly followed Zhang Zhengqing's footsteps.

…

Ren Feng adjusted the brightness of the flashlight to the maximum and followed Zhang Zhengqing towards the hospital.

The city streets are incredibly empty.

At this moment, Ren Feng even had an illusion.

It was as if the two of them were the only two humans left in City Four.

But soon, a rapid curse came from the residential building next to him.

Ren Feng subconsciously stopped.

"Let's go."

Zhang Zhengqing said expressionlessly: "We have to go to the hospital quickly."

He hesitated for a moment, then spoke again: "There are not many resources, and now is not the time for compassion to overflow."

Ren Feng was silent for a while.

He turned around and glanced at the building next to him again.

Vaguely, with the help of the flashlight's peripheral vision, he seemed to see a figure by the window.

"call……"

He took a deep breath, turned around and shouted: "If you want to survive, come with us to find oxygen supply equipment!"

Then, he smiled and said to Zhang Zhengqing: "Let's go."

"..." Zhang Zhengqing made no move, just looked at Ren Feng in confusion, "Why do you do this?"

"If they rob us..."

"Because, at this moment, we are all human beings." Ren Feng interrupted Zhang Zhengqing's words with a smile.

"This is the last lesson my grandpa taught me."

Zhang Zhengqing thought for a long time and nodded slowly: "Okay, I hope he is worth your efforts."

After saying that, he turned around and continued walking towards the hospital.

Ren Feng glanced at the residential building next to him again.

There was no movement.

pity……

He shook his head.

He has done what he should do, and at least at this moment, he has a clear conscience.

Ren Feng took a step forward, preparing to keep up with Zhang Zhengqing.

"Brother! Wait for me!"

A rush of footsteps came from the residential building.

A smile appeared on Ren Feng's lips and he stopped in his tracks.

…

One day later.

In the dark city No. 4, shouts began to sound continuously.

Under the light of a flashlight, several young people searched for usable oxygen supply devices from various places and transported them to the No. 4 City Central Hospital.

Along the way, young men of similar age hesitantly joined the queue.

An old man with gray hair turned around and returned to his home, standing silently by the window, watching the figures running in the darkness.

The crowd continues to grow, and the efficiency of collecting supplies also begins to improve...

…

Seven days later.

The final time limit has arrived.

The human fleet still didn't respond.

In City No. 1, in the central control center, the middle-aged person in charge looked at the declining values ​​in the holographic projection with a deathly expression.

"Professor Lu..."

"Did you really give up on us?!"

The middle-aged person in charge laughed miserably.

Then, he stood up, locked the door tightly, and struggled to move several huge oxygen tanks from the cabinet on the side.

He greedily breathed in the last bits of oxygen in the air, trying to delay his use of the oxygen tank.

The outside world is noisy.

Cries and curses filled the entire city.

Feeling the suffocation coming over him, the middle-aged person in charge slowly put on the mask.

With trembling hands, he turned down the oxygen output.

"call……"

After taking a deep breath, he slowly closed his eyes.

A drop of turbid tears streaked across his face and fell to the ground along the oxygen mask.

…

at the same time.

City No. 4.

An old man with gray hair walked to the street calmly.

They looked at each other with relieved smiles on their faces.

"Finally, it's our turn."

"We were lucky enough to survive back then, but today it's our turn to pay."

"..."

In the distance, inside the No. 4 City Central Hospital.

The oxygen supply facility made a hissing sound and slowly provided the minimum amount of oxygen into each sealed room.

One young man's eyes were red.

But he tried his best to suppress his breathing rate.

…

Ross 154 star system.

The moment the level one combat readiness alert was lifted, the familiar siren sounded in Lu Yongchang's ears again.

"zero?!"

Lu Yongchang's expression changed slightly and he shouted in a low voice: "What's going on?"

The holographic projection quickly unfolded in front of him.

Looking at the Chinese characters in the projection, Lu Yongchang couldn't help but froze on the spot.

In just a few seconds, the vigilance in his eyes dissipated instantly, and his eyes became moist.

"Zero, rescue the human civilization of Proxima Centauri immediately!"

…

"How many days have it been..."

Ren Feng murmured in a low voice.

Living with low oxygen for a long time made his mind become a little blurred.

"It has been 10 days since the accident occurred." Zhang Zhengqing's calm voice came from the side.

A trace of trance flashed in Ren Feng's eyes.

"...How long can we last?"

"10."

"Ten days...that's not bad." Ren Feng smiled weakly.

"9,8..."

"???" Ren Feng's trance suddenly cleared up, "What the hell?!"

"Are you serious?!"

"Haha, just kidding." Zhang Zhengqing chuckled and said again, "But it's almost over. I can probably last a day or two."

Ren Feng fell into silence.

"Do you regret it?" Zhang Zhengqing said again.

"No!"

Ren Feng's weak but firm voice sounded: "You have also seen what those old people did."

"This is why human civilization can continue to exist."

The moment the words fell, a dazzling light lit up in the room!

Ren Feng subconsciously covered his eyes.

After dozens of seconds, he slowly removed his palm and opened his tear-filled eyes with difficulty.

The huge room was bright.

The holographic image gradually appeared in the sky.

He turned his head and glanced around him.

He could clearly see the faces of everyone in the room.

He looked toward the side window.

Outside the window, there is light!