指山说磨   zhǐ shān shuō mò [point to a hill and talk about grindstone—make concealed reference to something] 借此说彼。比喻有意回避正题,弄虚作假,哄骗对方 为何远打周折,指山说磨,拿人家来比奴。——《金瓶梅词话》

指 山 说 磨