ㄇㄧㄥˊㄓㄨˋㄊㄡˊmíngzhū‑àntóu

  1. 明亮珍珠投入黑暗比喻懷才不遇好人誤入歧途珍貴東西賞識 才華不受重用真是明珠暗投」。

to cast pearls before swine (idiom)​, not to get proper recognition for one's talents
in schlechte Gesellschaft geraten , Perlen vor die Säue werfen