Sign-In System: From Menial Disciple to Immortal Overlord

Three questions shattered his dreams. No divine physique. No legendary bloodline. No hidden master or mystical benefactor. Branded a "triple-zero" failure, he's condemned to sweep floors in an immortal sect forever—until he dies from despair. Then Jiang Chen transmigrates into his body, only to discover his glorious second chance means... a century of janitorial duty. But when a mysterious sign-in system awakens, every mundane day becomes a step toward supreme power. Ten thousand years of patient cultivation in the shadows. One menial disciple. One impossible ascension.