Analysis: this sentence uses metonymy, "the gold ring flashes on her arm." In this sentence, the flashing golden ring is used as the metonymic subject, and small things are used to reflect the big situation or situation, making the sentence more vivid and concrete. Used to quote the following words, it can arouse people's imagination, make the sentence image prominent, distinctive, concise and vivid.

Related definitions:

Traditional rhetoric defines metonymy as a figure of speech that temporarily replaces the original person or thing with relevant person or thing according to the needs of rhetoric, which is called metonymy; Logical thinking defines metonymy as a temporary replacement between adjacent concepts in the same conceptual domain. This definition is based on the cognition of the psychological basis of metonymy, and it is a more rational definition of metonymy.

Compared with the traditional definition, this definition still contains three factors: relevance, timeliness, ontology and substitution of borrowing. This concept can be noun concept, verb concept or adjective concept. Replacing "name" with "concept" makes up for the shortcoming that the traditional definition is easily misunderstood as metonymy is only a substitution between nouns.