Metonymy, as its name implies, is to borrow one thing to replace another, so most of them are nouns. When using it, we must consider the legitimacy and universality of substitution, and try not to simplify the complex and make the meaning smooth. Moreover, metonymy at this time is generally similar to seeing the big from the small, seeing the big from the small and seeing the big from the small, and concretizing the sentence image. Generally speaking, metonymy is a rhetorical method of borrowing people or things closely related to metonymy when speaking or writing articles, rather than directly saying what you want to express. What is replaced is called "ontology" and what is replaced is called "borrowing". When "ontology" does not appear, it is replaced by "borrowing body".

If the green hills on both sides of the strait are opposite, the lonely sails come from the sun. (Looking at Tianmen Mountain) Replace the boat with some sails.