Therpo from Zor village (in Jamkhar Gewog, Trashiyangtse) narrates a story about offering Mingchang (a local millet brew). Once upon a time, there were two Koche brothers. The younger brother lived naked, without wearing clothes. One day, the elder Koche invited some of his friends to his house. He asked his younger brother to wear clothes, but the younger brother did not listen. He was ashamed in front of his friends when his younger brother did not wear any clothes; he threw his younger brother in the river. The elder brother fell physically ill because of this bad deed. Someone advised him to offer Mingchang as a remembrance for his younger brother.