反其道而行之 [ㄈㄢˇ ㄑㄧˊ ㄉㄠˋ ㄦˊ ㄒㄧㄥˊ ㄓ; fan3 qi2 dao4 er2 xing2 zhi1] to do the very opposite to act in a diametrically opposite way ◄ ►