The reason why overlap loses its main position in poetry

The unity of words and the appearance of rhyme. Through the inquiry, it is known that the unity of characters and the coordination of rhymes only developed after the existence of characters. With these, overlapping lost its main position in poetry. Overlapping means that the two parts of the explanation have the same meaning, and if one part is given up, the other part can also complete the task of explaining the purpose of the word.