Apocalypse: I rescued the big boss with millions of supplies

What a powerful cheat code!!! Long Yangyang died, only to be revived by the very cheat code that killed her. Reborn, Long Yangyang discovers she's transmigrated into a novel, a post-apocalyptic one at that—it couldn't be more exciting! To avoid her fate of being cannon fodder and not surviving past chapter thirty, Long Yangyang immediately distances herself from the female lead before the apocalypse begins. But is it really possible to avoid the female lead so easily? Long Yangyang initially thought her greatest cheat code was her "Anywhere Door," but along the way, she realizes her greatest cheat code is the powerful figure she casually picked up...