Classical Chinese has only rhetorical devices and situational features. The use of "duality" and other rhetorical devices: the dual form of similar, similar, complementary and contrasting upper and lower sentences is called duality. Reading it will feel very rhyming, such as "Difficult Road to Shu", in which: as high as a banner, six dragons drive the sun, and the river far below whips the winding river; What is actually used here is double rhetoric. Maybe you misunderstood the rules of pronunciation.
As mentioned above, the unique pronunciation of ancient poetry has strict requirements on syntax, phonology and level tone.
Syntax: study the components of sentences and their arrangement order. The object of syntactic research is sentences.
Rhyme: Homophonic words are regularly placed at the end of sentences in poems and other rhymes. Rhyming words are called rhyming feet or rhyming words.
Ping: The tone of words used in China's poems, the rhythm of poems, refers to straightness and twists and turns.