大ㄉㄚˋ有ㄧㄡˇ文ㄨㄣˊ章ㄓㄤdàyǒuwénzhāng

  1. 比喻有內幕、隱情。例 「這件事極不尋常，肯定大有文章」。

英some deeper meaning in this, more to it than meets the eye, there's sth behind all this