2. Duality, commonly known as antithesis, is called antithesis in poems, songs and other rhymes.
3. The antithetical sentences have unique artistic features, look neat and eye-catching, sound sonorous and pleasing to the ear, read catchily, and are easy to remember and recite, and are deeply loved by people.
4. Duality usually refers to a rhetorical device consisting of two opposite phrases or sentences with the same number of words, similar syntax, level and related meanings. The dual relationship is close, concise and concentrated, and has strong generalization power; Formally, the front and back parts are uniform, the syllables are harmonious and disciplined. Strict duality also stresses levelness and makes full use of Chinese tones.