Reporting to Grandmaster: Master Is on a Killing Spree in the Apocalypse

[Apocalypse + cultivator + System + ancient-to-modern transmigration + strong heroine] Disasters strike without warning, and the apocalypse begins. To find a cure for the people beneath Qingya Mountain, who are turning into zombies, Nian Xi, the last cultivator of her era, resolutely sets off for the apocalypse a thousand years in the future. The moment she arrives in that future apocalypse, she is destined to bring enormous changes to the world. Want to fight? She’ll take on one opponent or a whole crowd. Trying to ambush her? One spell, and the culprit will never speak again. Schemes and plots? They’re completely useless against absolute strength. But why does she keep feeling that someone is secretly watching her every move? Some Master: I didn’t! It wasn’t me! You’re imagining things! (An overpowered cultivator heroine x a seemingly delicate hero who is secretly a formidable powerhouse)