覆    雨    翻    云    形容人反复无常或惯于耍手段。

覆雨翻云：形容人反复无常或惯于耍手段。出自唐·杜甫《贫交行》：“翻手作云覆手雨，纷纷轻薄何须数。”

Produce clouds with one turn of the hand and rain with another

覆水不收    覆窟倾巢    覆去翻来    覆车之轨    覆是为非