ㄈㄨˊㄖㄨˊㄉㄨㄥdōngㄏㄞˇhǎi

  1. 東海吉祥·朱權荊釵記·》:福如東海壽比南山。」福如海淵」。

may your happiness be as immense as the East Sea (idiom)​