Test analysis: Synaesthesia figure of speech, also known as "empathy", is a figure of speech that uses image language to convey feelings when describing objective things, so that people's different feelings such as hearing, sight, smell, taste and touch can communicate, shift and transform with each other, and transfer the words that originally expressed A's feelings to express B's feelings, making the image more vivid and novel. The application of synaesthesia skills can break through the limitations of language, enrich the aesthetic interest of expression and performance, and enhance the artistic effect of literary talent. The most typical example: the breeze passes by, sending a faint fragrance, like a faint song on a distant high building "(Zhu Ziqing's Moonlight on the Lotus Pond). Incense is the sense of smell and singing is the sense of hearing. The author communicates two feelings, namely synaesthesia.