It was a local event held about 150 years ago when the residents of Imun-dong performed gosa rites for the mountain spirits for peace and prosperity of the village. It is originated from a rite where rite officer, elected by the villagers and having vigor, good luck and virtue, takes the sacrifices of rice cake, rice and cows and holds a devoted rite for the spirit of Cheonjangsan Mountain, a branch of Samgaksan Mountain, on the first day of October.