A harmonious and affectionate couple; based on the legendary [[鲽|鰈|die2]] and [[鹣|鶼|jian1]], a fish and a bird that are only able to move when paired together.

a deeply affectionate and harmonious couple; literally refers to the mythical one-winged birds and one-eyed fish that must travel in pairs

A metaphor used to describe a married couple who share deep affection and live in perfect harmony

mythical one-winged birds that must fly in pairs, used as a metaphor for a devoted or inseparable couple