ㄧㄡˇㄧㄢˇyǒuyǎnㄅㄨˊˋbúshìㄊㄞˋㄕㄢtàishān

有眼不识泰山
yǒuyǎn bùshí tàishānㄧㄡˇ ㄧㄢˇ ㄅㄨˋ ㄕˊ ㄊㄞˋ ㄕㄢ
  1. 形容見識淺陋身分本領 真是有眼不識泰山居然知道專家眼前」。

lit. to have eyes but fail to recognize Mt Tai (idiom)​, fig. to fail to recognize sb important or sb's great talent, to be blind to the fact