Zhong Rong said in "Poetry": "Therefore, poetry has three meanings: one is joy, the other is comparison, and the third is fu. ..... macro, three righteousness, strategy and use it. Blow it dry with the wind, moisten it with Cai Dan, and make the taster infinite and the listener tempted. This is the best poem. "
According to the author's point of view, "wind power", "Cai Dan" (that is, "literary talent" and "quality" of poetry) and "those who taste it are endless, and those who smell it are tempted" (that is, the spiritual appeal of poetry) are the criteria for judging.