The deity Vajradhara, who was divided into two bodies by serving Buddha, is a Deva king. They stand firm in pairs with their feet apart, one body with its mouth open in the shape of "A" and the other body with its mouth closed in the shape of "N," in front of temple gates on either side to protect the Dharma. The word "A-Un" has the meaning of inhaling and exhaling. The expression "the breath of A-Un," which means working in perfect harmony, is derived from a Deva king, who protects the temple in a pair of two powerful bodies.