Buchae refers to the fan used as a shamanic tool in a ritual.
The fan is one of the most important tools, central to the processes of a ritual. In a ritual, the shaman, as an agent of the gods, uses the fan to serve as a medium between the gods and her follower who has commissioned the ritual. When officiating a ritual or when trance channeling, the shaman has in her left hand the rattle and in her right the fan. She uses the fan to hide her face or to accept money. In shamanism, the fan is capable of chasing away evil spirits and calling in the good spirits, creating wind that washes away the wrongs of the past, brings in the good fortunes of the present, and delivers prophecies for the future.
When a shaman is near death or is retiring, she passes down her fan and rattle to a younger shaman or buries them in the ground. The younger shaman who receives the fan and rattle considers herself as heir to the legacies of the older shaman, and those who discover by chance the buried tools enter the shamanic practice, considering the coincidence her fate in life. To a shaman, the fan is not a simple tool but a magical symbol that reflects that she is an agent of the gods.