琴qín诗shī
若ruò言yán琴qín上shàng有yǒu琴qín声shēng,放fàng在zài匣xiá中zhōng何hé不bù鸣míng?
若ruò言yán声shēng在zài指zhǐ头tou上shàng,何hé不bù于yú君jūn指zhǐ上shàng听tīng?
宋朝苏轼