Ling Xiao is an undying being, neither human, ghost, nor immortal. He has lived from ancient times to the modern day, for over a million years.
Throughout the long, eternal years, he has taken on all kinds of roles: Taoist priest, doctor, drill instructor, pawnshop owner, and even a prince granted a fief, powerful enough to rule the court.
He has guided humans and ghosts, slain immortals and gods, and spent years searching for others of his kind.
A planned massacre ten thousand years ago wiped out his entire clan and left Ling Xiao gravely wounded. He slept for a thousand years...
