[Lan Wangji used to have a normal sleeping schedule of 5am to 9pm, but not anymore since he adjusts to having an occasional nightly patrol, namely to escort residents by bedtime. What kind of family that collects creepy stories? Well, his own deals with ghosts and spirits, so the work is familiar territory]

A creature that haunts tombs? I know in my world where I'm from, tombs can be large and elaborate like a chamber to keep treasure and belongings.