It refers to combining several phrases into a sentence, not words into words. The combination of words, also called the combination of couplet words, refers to combining two or more words with the same or different tones into a group of words in a certain way and singing the same or similar themes. In a group of words
Each word is relatively complete and independent, but it is internally related to other words in the group. Word-formation structure can be mainly divided into echoing beaded narrative juxtaposition and harmonious linked chapters. Fourteen Poems, Bodhisattva Man, ten poems by Ouyang Xiu, five poems by Su Shi on Xie Yu Road in Xumenshitan, Huanxisha, nine poems by Zhang Ji, etc.