"Dear citizens of Dungeon 1183, according to the latest observation results, the sun will erupt in a helium flash in 30 minutes."

"Human civilization has entered the final 30-minute countdown."

"We...failed."

In the underground city at a depth of 500 meters from the earth's surface, a female voice with a heavy tone is playing from speakers that can be seen everywhere.

Everyone who heard the broadcast felt an indescribable sense of suffocation deep in their hearts.

Lu Yongchang sat expressionlessly in front of a holographic projection image.

In the holographic image, a huge fireball burns quietly in the deep cosmic space.

This is the picture of the sun at this moment.

Lu Yongchang took a deep breath, stretched out his right hand and waved a gesture in the air.

The scale of the holographic image suddenly shrank, showing the whole picture of the solar system today.

Unlike the previous solar system, the solar system at this time has lost two planets.

Venus and Mercury have been swallowed by the sun!

And the sun also turned into a crimson giant!

In astronomy, it has an exclusive name.

Red giant!

"Yongchang... We, no, human beings, are we going to perish like this?"

A slightly helpless female voice came from the side.

Lu Yongchang turned his head and looked around.

A woman in a white coat sat on a chair, staring blankly at the holographic projection in front of her.

Lu Yongchang's eyes moved slightly.

As the chief scientist of Renlian Academy of Sciences, this woman named Su Yutong is his partner and his right-hand man.

"Yeah, humans are finished."

Lu Yongchang sighed softly, and continued: "There are still more than 20 minutes, do you want to go to the surface to see?"

Su Yutong's eyes moved slightly, and he turned his eyes away from the holographic projection in front of him, and slowly stood up from the chair.

She reached out and untied her long black hair, facing Lu Yongchang, showing a bright smile.

Unauthorized usage: this narrative is on Amazon without the author's consent. Report any sightings.

"certainly."

...

In the elevator of underground city No. 1183, Lu Yongchang and Su Yutong were wearing heavy protective clothing, looking at each other speechlessly.

On the elevator screen, the number showing the current depth is constantly beating.

A bit of regret flashed in Lu Yongchang's eyes.

In 2045 AD, the sun on which human beings rely for survival was affected by unknown influences, ended their youth and matured, and entered aging ahead of schedule.

In just five years, the sun has entered the red giant stage, devouring two planets in the solar system one after another.

The human beings who were driven to a dead end eliminated all kinds of barriers and established the Human Federation, referred to as the Human Federation.

And Lu Yongchang, relying on his status as a top student since he was a child, passed all the way and successfully won the title of Chief Scientist of the People's Union Academy of Sciences!

According to his calculations, even if the sun enters the red giant stage ahead of schedule, it still takes hundreds of years for a helium flash to erupt.

Because the surface is no longer suitable for survival, under his call, the People's Federation built countless dungeons, and all human beings entered the dungeons for refuge, and at the same time began to build interstellar spaceships.

But obviously, he miscalculated.

In just five years, the sun has spanned the billions of years of life of other stars!

Helium flash is about to explode!

The Earth, as the planet currently closest to the sun, will, no surprise, be melted into a ball of magma.

Human civilization has come to an end!

"Ding!"

"Dear Chief Scientist, I wish your research mission on the surface every success."

A crisp notification sound awakened Lu Yongchang from his contemplation.

He looked at the elevator screen.

518c

This is the surface temperature outside.

The elevator door opened slowly, and a wave of heat rushed towards the face along with the distorted air!

Looking at the huge red star above his head and the hot surface, even with the presence of protective clothing, Lu Yongchang still felt a sense of heat!

"In one minute, the helium flash is about to erupt."

Su Yutong's slightly cold voice came from the radio.

Lu Yongchang didn't speak, but raised his head and looked at the sun through the mask with filtering ability.

As the only advanced civilization on earth, he doesn't want to bow his head to die!

"Do you know how hard I worked to become your assistant?"

"You know why I did this?"

Perhaps it was because at the last moment, Su Yutong's voice was full of relief: "Because, I like you."

Lu Yongchang's pupils suddenly shrank.

Helium flash broke out!

The extremely powerful white light shines on the earth from the red giant star!

In just a moment, Lu Yongchang lost consciousness.

...

There was a glowing green in front of my eyes.

A white line slowly extended, drawing a tree diagram in the fluorescent green void background.

Lu Yongchang looked at everything in front of him with some confusion.

This... what is this?

A faint flash of light glows at the bottom of the dendrogram.

Subconsciously, he cast his gaze towards the bottom of the tree.

Nuclear Power Control: Controlled nuclear fission.

A line of highlighted white text appears.

The next moment, the white area began to extend upwards.

Nuclear power mastery: Controlled nuclear fusion.

As this line of originally dim text became brighter, countless words and symbols instantly submerged Lu Yongchang's consciousness!

...

"Lu Yongchang! Lu Yongchang!"

"Professor Guan is calling you! Lu Yongchang!"

In a daze, a familiar low voice came from beside my ear.

The line of sight gradually gained focus.

What came into view was a classroom.

Seeing the old man frowning at him on the podium, Lu Yongchang's pupils shrank slightly.

Professor Guan Hualiang!

He... didn't he pass away five years ago? !

"Lv Yongchang! This is the first college physics class! If you don't like physics so much, why are you applying to the physics department?!"

There was some anger in Guan Hualiang's voice.

With a dazed expression on his face, Lu Yongchang subconsciously stood up, turned his head and looked around.

familiar scene.

This is... his college classroom!

If I remember correctly, this is his first physics class in his sophomore year!

He quickly took out his phone from his pocket and turned on the screen.

September 6, 2030!

Re... reborn? !

In an instant, countless complex emotions emerged in Lu Yongchang's mind.

Confused, sad, lost and a little hope!

Ordered by the sky, life will last forever.

This is where his name comes from.

It turns out that the name was right.

In his last life, he had the pinnacle of human beings, but... due to his mistakes, human civilization completely perished.

In this life, he wants to save everything!

But... what should I do?

"Lu Yongchang! Did you hear me!"

Professor Guan Hualiang on the podium flushed with anger.

He has taught at Sandaokou University for so many years, and he has never seen such a disrespectful student!

Lu Yongchang looked up at Professor Guan Hualiang on the podium and the blackboard behind him, his eyes moved slightly.

Maybe...he needs a chance to make a big splash!

next moment!

The countless formulas and words brought by the fluorescent green tree diagram circled back and forth in his mind like a storm!

ps: The plot of the first few chapters may be a bit toxic, and the author is also writing a novel for the first time.

As for the heroine, there is basically no role in the show, it can be said that there is no heroine.

Update every night at 12 o'clock.