rigid as a rock jiān　rú　pán　shí [Interpretation] Jian: solid; Panshi: big stone. As solid as a boulder. Described as very solid; unshakable. [Quote] "New Odes of Yutai·An Ancient Poetry Written by Jiao Zhongqing": "You are like a rock; I am like a pampas grass. The pampas grass is like silk; the rock has no transference." [Correct pronunciation] Pan; cannot be pronounced as "pān". [Shape identification] Pan; cannot be written as "pan". [Similar meaning] Safe as Mount Tai, Safe as a rock [Antonym] Tottering, vulnerable [Usage] Often used for abstract things such as unity, will, friendship, and faith; sometimes it also refers to concrete things. Generally used as predicate and attributive. [Structure] More formal.