引ㄧㄣˇyǐn玉ㄩˋyù之ㄓzhī磚ㄓㄨㄢzhuān

  1. 自謙之詞。比喻為了引出別人的佳作或高論而發表的粗陋的詩文或淺薄的見解。

英lit. a brick thrown to prompt others to produce a jade (idiom)​, fig. a modest suggestion intended to prompt others to come forward with better ideas