"Citizens of HLA Dungeon 1183, according to the latest observations, the sun will erupt in a helium flash in 30 minutes."
"Human civilization, entering the final 30-minute countdown."
"We ... have failed."
Inside the underground city 500 meters deep from the earth's surface, a female voice with a heavy tone was broadcasted from speakers everywhere.
An indescribable sense of suffocation came from deep inside everyone who heard the broadcast.
Lu Yongchang sat expressionlessly in front of a holographically projected image.
In the holographic image, a huge fireball was quietly burning in the deep cosmic space.
This was the image of the sun at this moment.
Lu Yongchang took a deep breath and stretched out his right hand to wave a gesture in the air.
The scale of the holographic image suddenly shrunk, showing the entirety of the solar system today.
Unlike the previous solar system, the solar system at this time had already lost two planets.
Venus and Mercury had already been swallowed by the sun!
The Sun, on the other hand, had turned into a deep red giant!
In astronomy, it had an exclusive name.
Red Giant!
"Yongchang ... we, no, the human race, perish like this?"
A slightly helpless female voice came from the side.
Lu Yongchang twisted his head towards his side.
A woman in a white coat was sitting on a chair, staring blankly at the holographic projection in front of her.
Lu Yongchang's eyes moved slightly.
As the chief scientist of the Human League Academy of Sciences, this woman named Su Yutong was his partner and his right-hand man.
"Yes, humanity is finished."
Lu Yongchang sighed softly and continued, "There's still more than twenty minutes left, do you want to go to the surface to take a look?"
Su Yutong's eyes moved slightly as she withdrew her gaze from the holographic projection in front of her and slowly stood up from her chair.
She reached out to untie her long black hair that was coiled up and faced Lu Yongchang, revealing a radiant smile.
"Of course."
...
In the elevator of Dungeon 1183, Lv Yongchang and Su Yutong looked at each other in their heavy protective suits.
On the elevator screen, numbers displaying the current depth were constantly pulsing.
A few sighs flashed in Lu Yongchang's eyes.
In 2045 AD, the sun, on which mankind relies for survival, was affected by unknown influences, ending its own period of youthfulness and stepping into senility ahead of time.
In just five years, the sun entered the red giant stage, devouring two planets in the solar system one after another.
Humanity, driven to desperation, eliminated all sorts of barriers and established the Human Federation, or the League of Man for short.
And Lv Yongchang, by virtue of his identity as a schoolmaster since childhood, went all the way through and succeeded in picking up the crown of Chief Scientist of the Academy of Sciences of the Human Federation!
In his calculations, even though the sun had entered the red giant stage ahead of schedule, it would still take hundreds of years for the helium flash to erupt.
Because the surface of the earth was no longer suitable for survival, under his call, the League of Man established countless dungeons, into which the entire human race took refuge, and at the same time began to build interstellar spaceships.
But apparently, he miscalculated.
The sun has spanned billions of years of life processes of other stars in just five years!
A helium flash is about to erupt!
Earth, as the closest planet to the sun at the moment, will, unsurprisingly, be melted into a ball of lava.
Human civilization has come to an end!
"Ding!"
"Dear Chief Scientist, may your research mission on the surface be a complete success."
A crisp beep awakened Lu Yongchang from his contemplation.
He looked towards the elevator screen.
518 degrees Celsius.
This was the surface temperature outside.
The elevator doors slowly opened and a wave of heat accompanied by distorted air hit his face!
Looking at the large red giant star above his head and the heat wave tossing over the surface, even with the presence of the protective suit, Lu Yongchang still felt a blazing sensation!
"There's still a minute left before the Helium Flash erupts."
Su Yutong's slightly cool voice came from the radio.
Lu Yongchang didn't say anything, he just raised his head and looked at the sun through the mask with filtering ability.
As the only higher civilization on Earth, he didn't want to bow his head to death!
"Do you know how much effort I put in at that time to become your assistant?"
"Do you know, why I did it?"
Perhaps because at the last moment, Su Yutong's voice was full of relief, "Because, I like you."
Lu Yongchang's pupils shrunk violently.
The helium flash erupted!
White light that was strong to the extreme spilled out from that red giant star onto the Earth!
In just an instant, Lu Yongchang lost consciousness.
...
A fluorescent green was in front of his 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.
What ... is this?
A faint flash of light lit up at the bottom of the tree-like diagram.
Subconsciously, he cast his own gaze towards the bottom of the tree diagram.
Nuclear Energy Mastery: Controlled Nuclear Fission.
A line of highlighted white font appeared.
The next moment, the white area began to extend upwards.
Nuclear Energy Control: Controllable Nuclear Fusion.
As this line of originally dull text brightened, countless words and symbols instantly flooded Lu Yongchang's consciousness!
...
"Lv Yongchang! Lv Yongchang!"
"Professor Guan is calling out to you! Lv Yongchang!"
In a daze, a familiar whispered cry came from beside his ears.
The line of sight gradually came into focus.
What came into view was a classroom.
Looking at the old man on the podium who was frowning at himself, Lv Yongchang's pupils shrunk slightly.
Professor Guan Hua Liang!
Didn't he ... he passed away five years ago?
"Lv Yongchang! This is the first college physics class! Disliking physics so much, why did you enroll in the physics department?!"
There was some anger in Guan Hua Liang's voice.
Lv Yongchang was bewildered and subconsciously stood up, twisting his head to look around.
A familiar scene.
This was ... his college classroom!
If he remembered correctly, this was the first physics class of his sophomore year!
He hurriedly pulled out his cell phone from his pocket and pressed the bright screen.
September 6th, 2030!
Re ... reborn?
In an instant, countless complex emotions surfaced in Lu Yongchang's mind.
Confusion, sadness, loss as well as a little hope!
Being entrusted with the order of Heaven, both longevity and eternity.
This was the origin of his name.
The facts proved that the name was not wrong.
In his last life, he had the pinnacle of humanity, but ... under his mistakes, human civilization completely perished.
In this life, he wanted to redeem it all!
But ... what should he do?
"Lu Yongchang! Do you hear me!"
Professor Guan Hua Liang on the podium was red with anger.
In so many years of lecturing at Sandaokou University, he hadn't seen such a disrespectful student!
Lu Yongchang looked up at Professor Guan Huariang on the podium and the blackboard behind him, his eyes moving slightly.
Perhaps ... he needs a chance to make a splash!
The 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 first few chapters of the plot may be a bit toxic, the author is also writing a novel for the first time.
As for the female lead, there is basically no drama, so it can be said that there is no female lead.