Natural Disaster, a Post-apocalyptic Life

As a de facto orphan, Li Jing spends every day off either working or on her way to work. In an unexpected turn of events, she miraculously awakens the legendary "golden finger" (a special ability to grant unparalleled advantages). She initially thought she could use this to reach the pinnacle of life, but what? The "female lead" has been reborn? And a cataclysmic apocalypse is coming? Oh no! What to do? She can only secretly follow the "female lead," scavenging for scraps and trying her best to survive in the apocalypse.