C170 Xuye's Blueprint

Xuye explained to them that when the gates between the Immortal World and the Devil Realm were open, immortals would sometimes visit the Mortal Realm. There, they often lent their aid to many humans. He also revealed that crafting such puppets wasn't exclusive to the denizens of the Devil Realm.

During his time in the Immortal World, he had learned the art of puppet-making