比翼鳥

Simplified: 比翼鸟

bǐyìniǎo ㄅㄧˇ ㄧˋ ㄋㄧㄠˇ

    • loving married couple

Character by character

Saying俗语俗語

Idiom惯用语 · Widely known

Literally
birds flying wing to wing
Meaning
A loving married couple, after the legendary birds that fly side by side. Approving.

Sources