Shen Quanqi and Song Wenzhi in the early Tang Dynasty made great contributions to the formation of metrical poems. They further developed Shen Yue's new style poems which paid attention to rhythm and antithesis in the period of Qi Yongming in the Southern Dynasties, and made the metrical poems have strict rules in words, rhyme, rank and duality, and paid great attention to antithesis and antithesis. Yuan Zhen recorded the naming of "Yun" for the first time in the Preface to the Tomb of Lang Dujun, Yuan Wai, Ministry of Industry of Tang Dynasty, so the names of Shen and Song became the symbols of rhyme stereotypes.
In addition, adhering to the right law is also an important part of metrical poetry, which is gradually observed by ordinary poets and has a great influence, making contributions to the establishment and development of modern poetry. When this kind of metrical poetry is applied to five-character poems and seven-character poems, it becomes metrical poetry; When it is applied to four or six essays, it becomes metrical prose. Its characteristic is that sentences are divided into sound steps, including two-tone steps and one-tone steps. For example, a five-character metrical poem has two steps and one step, and the flat steps are staggered. Seven-character metrical poem is an addition to five-character metrical poem.
Generally speaking, the contribution of Shen Quanqi, Song and many later poets to the stereotype of metrical poems is mainly reflected in their in-depth research and practice of temperament and antithesis, which makes metrical poems more standardized in form and colorful in content. Their works not only promoted the development of Tang poetry and even the whole ancient poetry art, but also had a far-reaching impact on later generations.