[颠覆 / 顛覆, diān fùㄉㄧㄢ ㄈㄨˋ] to topple (i.e. knock over); to capsize; fig. to overturn (a regime, by plotting or subversion); to undermine; to subvert#10507
[翻云覆雨 / 翻雲覆雨, fān yún fù yǔㄈㄢ ㄩㄣˊ ㄈㄨˋ ㄩˇ] to produce clouds and rain with a turn of the hand (成语 saw); fig. to shift one's ground; tricksy and inconstant#59683