Bixing is a common skill in ancient poetry. In this regard, Zhu had a more accurate explanation in Song Dynasty. He thinks: "If you compare, compare this thing with another thing", and "If you are interested, say something else first to arouse the words you sing." Generally speaking, "bi" is a metaphor, a metaphor that visualizes people or things, making its characteristics more distinct and prominent. "Xing" is rising, that is, taking other things as the starting point of poetry and arousing the content to be praised. "Bi" and "Xing" are commonly used.
Of course, the main way to judge is to start with the description of the scenery that has nothing to do with the following, such as the peacock flying southeast and wandering five miles in Peacock Flying Southeast, which has little connection with the content of this narrative poem.