Ghostbusting Celestial Master

After transmigrating to a world where ghosts and monsters have returned, I unexpectedly get a Ghost-Hunting System.

Ding! The Host is using this System for the first time. Special reward: Volume One of the Ghost-Subduing Records.

Ding! The Host has entered a school. Reward: One lightning-struck peachwood sword.

Ding! The Host has subdued a thousand-year-old zombie for the first time. Reward: One Maoshan Bagua Mirror.

With this System, I subdue female ghosts on and off campus and outwit sorcerers.

Then one day, I discover that a girl in my class is the Saintess of the Evil Emperor...

My name is Li Gui, and I'm a Celestial Master who hunts ghosts.

This novel and its characters are entirely fictional. Any resemblance to real people or events is purely coincidental. Do not imitate.