In English (see "metaphor" in Chinese), metaphor is a rhetorical device different from simile, which is not expressed by like or as, but a hidden comparison. Metaphor is also called metaphor. Expression: A is B.
Metaphor is metaphor, using one thing as a metaphor for another.
Metaphor is the psychological behavior, linguistic behavior and cultural behavior of perceiving, experiencing, imagining, understanding and talking about such things under the hint of such things.
Poetry, especially in modern times, has important characteristics in word collocation. It likes to break through the habitual connection between words, connect some seemingly unrelated things together, and combine seemingly unrelated words together. New critics generally call it metaphor.
Look at whether the two things compared are similar in characteristics or nature, so as to judge whether metaphorical rhetoric is used ~
I hope I can help you ~