July 7 is the day when fishermen lost at sea can see the Big Dipper, the brightest stars that will help them find their way like a compass. From olden times, Koreans believed that the Big Dipper was the constellation of stars that controlled the time of space and human lives. That is why humans have prayed for health and happiness in the direction of the Big Dipper. On the night of July 7, popular folklore also has it that two love stars, Gyunwoo and Jiknyu, meet and form the beautiful galaxy. This is another reason why the exorcism is held on this day.