The role of duality

Enhance language expression. Duality is an important rhetorical device in China's classical literature. It forms a harmonious and balanced rhetorical effect by using two or more sentences or words with similar structures and related meanings. The magical function of duality is that it can make the language more refined and vivid, enhance the expressive force, and at the same time make readers have a better aesthetic experience in the reading process. Many idioms, sayings and proverbs have a dual structure, such as "iron wall", "deep-rooted", "no village before, no village behind", "drum on the face, no gong behind" and so on. Poetry pays attention to neat and striking language form and harmonious and beautiful voice, so it often uses antithetical sentences. Proper use of some antithetical sentences in prose can also increase the rhythmic beauty of language. However, whether it is poetry or prose, the use of duality should be subject to the needs of content, and rote learning is not allowed.