Secondly, it is a common expression in poetry and prose to express emotion by borrowing things, that is, the author expresses his thoughts and feelings or some character's ambition implicitly by describing something, and the things in the poem are personalized.
There is also narrative lyricism. For example, Zhang Ji's Qiu Si in the Tang Dynasty is full of affection. With the help of a pregnant episode in daily life-the details of thoughts and actions when sending a letter home, it expresses the deep nostalgia of people who are away from home for their loved ones in a very real and delicate way.