Eight pairs: antithesis, couplets, palindromes, interval pairs, disyllabic pairs, rhyming pairs and quasi-pairs. Shangguan Yi contributed to the maturity of rhyme. Through the efforts of the four masters in the early Tang Dynasty, Shen Song became the main form of poetry in the Tang Dynasty.
The book "Ci Yuan Lei Ge" records Shangguan Yi's own view of poetry-"Tang/Shangguan Yi said: there are six pairs of poems, one pair of names, heaven, earth, sun and moon; Second, a pair of the same kind, mosaic grass buds are also; Third, Julian is right, and so is Mix. Four tones are positive, and Huanghuai Qingliu is also; The five rhymes are right, and it is awkward to put them; Double match on six days, spring trees and autumn pools. There are eight pairs of poems ... "