That's the usage of the old almanac. What rhetoric is this sentence?

This is the rhetorical device of "Lao Huang Li Yong"-metonymy rhetoric.

Metonymy means not directly saying the person or thing you want to express, but borrowing someone or thing closely related to it instead.

Types of metonymy: characteristic substituting for things, concrete substituting for abstraction, part substituting for whole, and whole substituting for part.

Function: highlight the essential characteristics of things, enhance the image of language, make the writing concise and concise, and make the language rich in change and sense of humor; Attract people's association, so that the expression receives outstanding images, distinctive features, concrete and vivid effects.

Laohuangli, a derogatory term, is used to refer to conservative thoughts and behaviors.

Hello, I'm glad to answer your question as soon as possible! If you have any questions, please ask them in time. If you are satisfied, please adopt them!