What is "image"? The conventional explanation is "hidden things", but it is still difficult to distinguish them only in this way, because the images in poetry are all useful and are deliberately done by the poet, otherwise the poet will not write them. If this is recognized, it is equivalent to recognizing that all images in poetry are images. For example, when the poet chooses "the foot of my bed is as bright as a thread" and "mowing grass at noon", when he chooses "bed" and "moonlight", "grain" and "sun", he must also be intentional. Is it a "moral thing"? If it is, it can only represent the basic meaning of the object itself in the poem, and the extended meaning is not ambiguous. If it is regarded as an "image" representing another meaning, it will cause confusion in language logic and lose the possibility of communication between the author and the reader. Because, if some things in a poem only represent themselves, and some objects are "pointing at mulberry trees", if their "identities" are not clearly distinguished, readers will fall into the fog of paying attention to one thing and losing the other. Therefore, the definition of image concept needs to be based on the distinction between objects and images.
Judging from the function of image in poetry, the so-called "image" is actually "the poet's description of things", which is similar to putting some ordinary things on a "stage" to perform a play together, and letting it (he) play another one that is not it (he) but has internal relations with it (he). The first point is that it (he). If the image is defined from this, the so-called image is actually "the rhetorical object of things". When the object appears as a single object, and the last "object (image)" is the amplification and extension of the meaning of the previous rhetorical object, we call it "independent image". Some images are not superficial rhetoric, but come out through poetic fields, and they (they) insinuate one group to another.