阳奉阴违（陽奉陰違）　

◎ 阳奉阴违 yángfèng-yīnwéi

[overtly agree, but covertly oppose;out wardly obey but inwardly oppose] 当众同意背后反对

如有日与胥徒比,而阳奉阴违,名去实存者,断以白简随其后。——《明臣奏议·革大户行召募疏》