How to distinguish between the combination of reality and fiction and knowing pun in the appreciation of ancient poetry, such as canoe.

The relationship between "reality" and "emptiness" in poetry, and the relationship between imaginary writing and real writing are all based on reality and emptiness. "Reality" is an image that describes things positively, and refers to the real images, facts and reality that exist in the objective world. It can be felt through vision, hearing, touch and so on, and it is a real and concrete description; "Virtual": It is written by side contrast or suggestion.