雕虫小技 diāochóng-xiǎojì

[insignificant skill;literary skill of no order;ornate writing with embellishments;triffling skill of a scribe] 比喻微小的技能,也用来谦称自己写的诗作或文章

尝谓魏收曰:“雕虫小技,我不如卿。国典朝章,卿不如我。”——《北史·李浑传》