System: A Century Late, You've Already Reached the Top?

Lu Bai transmigrated into a brutal high-martial world where alien races reign supreme and humanity teeters on extinction. Armed with the wisdom of two lifetimes and peerless talent, he spent a hundred years clawing his way to sainthood—single-handedly reversing humanity's fate and becoming a living legend. Then his system finally activates. "Ding! Detecting host has not yet become a Spirit Warrior..." Too late, system. He's already conquered the world. Watch as the mightiest cultivator of his generation navigates a hilariously outdated cheat system in a realm where the strong devour mountains,…