In the past people believed that a woman's menstruation cycle was unclean, and thus in popular belief women were not allowed to undertake sacred tasks like holding statues of the gods or playing the role of deities.
過去人們相信女人的月信是不潔的，因此，在民間信仰中，凡是捧神像、扮神明這樣神聖的工作都不准女性擔任。