陽ㄧㄤˊ奉ㄈㄥˋ陰ㄧㄣ違ㄨㄟˊyángfèng‑yīnwéi

简阳奉阴违

  1. 表面上遵守奉行，卻暗中違背。例 「他忠厚老實，絕不會做出陽奉陰違的事」。

英outward devotion but inner opposition (idiom)​; to pay lip service, to agree overtly, but oppose in secret