(literary) The three traditional pillars of social order: the ruler guides the subject, the father guides the son, and the husband guides the wife.

(Buddhism) The three primary administrative roles in a traditional Chinese Buddhist monastery: the Sthavira 上座 shàng​zuò, the Vihārasvāmin 寺主 sì​zhǔ, and the Karmadāna 维那 wéi​nà