Everyone Struggles to Survive Underground, but I'm the Son of the Earth!

[No AI, entirely hand-written + Mindless power fantasy is fun, but smart power fantasy is even better + Survival without hardship + Not a saint, not a psycho + A crowd of beauties]

Without warning, humanity's fate is trapped in an underground abyss.

Suffocation, darkness, unknown creatures, seven days of catastrophe... One crisis after another, with every second counting down.

But the sharp-witted Lu Feng successfully binds the Son of the Earth System. While others dig blindly in the dark and fight to the death over half a bottle of water,

he unlocks miraculous buildings, commands the loyalty of devoted believers, tames dangerous creatures, and gains control of countless resources. Step by step, he unlocks new technology and restores the brilliance of human civilization.

"I can feel it. Behind this stone chamber is a KFC family bucket. I'm sick of those already, so I'll pass."

"This chamber seems to have... the ultimate, invincible diamond treasure chest in the universe? I'm sick of opening those already, so I'll pass."

"Why is there a subterranean brat behind this one who calls people useless fish!? This is the one!"