After Reaching Max Level, I Relied on Good Deeds to Prolong My Life

[1v1, two equally powerful leads, wild imagination, otherworldly magic, contracts, ghosts and monsters] A spellcraft prodigy: sharp-tongued but soft-hearted, and supremely powerful, VS a proud, golden-haired, blue-eyed ghost: an emperor from an ancient age Gu Xiaoruan runs an old shop and picks up the occasional ghostbusting job at people's homes to earn enough for food and drink in the human world. When her twentieth birthday arrives, she will summon her third spirit.