There are two types of people in the world, one who does errands for the living and the other who does things for the dead. We call these people spiritual disciples, and the deceased who instructs them to do things is the spiritual master.
Since most spiritual disciples will cause certain damage to the human world and even poison living beings in the process of helping the spiritual masters fulfill their spiritual wishes, a private organization was created that specifically prevents spiritual disciples from fulfilling their spiritual wishes or even eliminates them. The Yuling Group is an extremely mysterious organization. It was founded by Master Li Ku more than 300 years ago. The general helm is located in Juying Mountain. It has not set foot in the world for hundreds of years.