刘熙载说:“春之精神写不出,以草树写之,山之精神写不出以烟霞写之。”宋代画院考试,要考生画“踏花归去马蹄香”,香无形,怎么画?于是有人借形,借蜜蜂蝴蝶围着马蹄翻飞来表现。“柳枝西出叶向东,此非画柳实画风。风本无质不上笔,巧借柳枝来形容。”这首诗描述的是一种作文描写 Liu Xizai said: “The spirit of spring can’t be written, written in grass and trees. The spirit of the mountain can’t be written in haze.” For the Song Dynasty Academy of Fine Arts examinations, candidates must be painted and “painted to return horseshoe-scented incense”. So someone borrowed and used bees and butterflies to fly around the horseshoe. “The willow branches west to the east. This is not a realistic painting style. The wind is not a quality pen. It is aptly described by the willow.” This poem depicts a description of the composition.