買櫝還珠 · mǎi dú huán zhū
- 買下裝珍珠的匣子，卻退還匣中的珍珠。比喻沒有眼光，取捨不當，捨本逐末，只注重外表而不注重實質。書證楚珠鬻鄭，爲薰桂之櫝，鄭人買櫝而還珠。——南朝梁·劉勰《文心雕龍·議對》用法常作謂語、賓語、定語；含貶義。英文keep the casket and return the pearls; show lack of judgement as one who buys the glittering casket and returns the pearls to the seller