Yuheng Elder (玉衡长老)
Also known as Yuheng of the Night Sky (晚夜玉衡) and the Beidou Immortal (北斗仙尊), he is a grandmaster of the cultivation world who hides his caring and sensitive nature behind a cold exterior. He devotes his time to the thankless task of sealing the rifts in the barrier between the ghost realm and the mortal realm and often spends his spare time creating affordable mechanical devices such as the Holy Night Guardian so ordinary people can protect themselves from ghosts. Chu Wanning takes it upon himself to protect the people and rid the world of evil even if it means sacrificing himself.