The Quatrain of Seven Steps seven strides such that Cao Pi is convinced of his innocence. Cao Zhi does so, and Cao Pi becomes so flustered with emotion that he spares his brother, although he later exacts punishment upon Cao Zhi in the form of demotion. The poem itself is written in the traditional "five-character quatrain" style and is an extended metaphor that describes the relationship of two brothers and the ill-conceived notion of one harming the other over petty squabbling. There exists two versions of the poem, one being six lines in length and the other four. The former is generally thought to be
Classic of Poetry for much of Chinese history. One of the characteristics of the poems in the "Classic of Poetry" is that they tend to possess "elements of repetition and variation". This results in an "alteration of similarities and differences in the formal structure: in successive stanzas, some lines and phrases are repeated verbatim, while others vary from stanza to stanza". Characteristically, the parallel or syntactically matched lines within a specific poem share the same, identical words (or characters) to a large degree, as opposed to confining the parallelism between lines to using grammatical category matching of the words in one line with