ㄩㄢˊyuánㄒㄧㄥˊxíngㄅㄧˋㄌㄨˋ

  1. 原本形貌面目完全暴露出來經過明查暗訪終於內賊使原形畢露。」暴露藏頭露尾

original identity fully revealed (idiom)​; fig. to unmask and expose the whole truth