On top of the embers of civilization, Ling Chen was reborn and returned.
In his last life, he devoted all his energy to build the "Ark in the Center of the Earth", the last bulwark of hope in the apocalypse. However, at the final moment of the disaster, he was betrayed by his most trusted brother and pushed into the abyss with his own hands, becoming the foundation stone of the Ark.
When he opened his eyes again, he went back to the three hours before the end.
This time he didn't trust anyone. The flames of betrayal burned his soul, and what beat in his chest was the mysterious treasure that was reborn with him - the "Earth Core Source".
It is no longer a cold steel barrier, but a living fortress that can evolve infinitely, a giant beast buried deep underground.
Devouring metal, it can grow an alloy skeleton that penetrates the earth's crust.
By absorbing energy, it can light up the underground royal city that will never fall.
Analyzing the gene, it can breed the most loyal servants of the abyss.
While everyone is still struggling to survive on the surface for a piece of bread, Ling Chen has already established his steel empire underground.
While the former enemy is still lingering in the ruins, Ling Chen has become the abyss lord in charge of the entire planet's earth.
"In this life, I will no longer protect anyone."
"I am the abyss and the only law."