The document summarizes the "Seven Step Poem," an allegorical tale attributed to Cao Zhi from the Three Kingdoms period in Chinese history. It describes the conflict between Cao Zhi and his brother Cao Pi over succeeding their father Cao Cao as emperor. Cao Pi was afraid of Cao Zhi's ambitions and threatened to execute him. Cao Zhi's mother begged for his life, and Cao Pi said he would spare Cao Zhi if he could compose a poem in seven steps. Cao Zhi recited the poem, which urged unity between family members over strife. Cao Pi was moved to tears and spared his brother's life. The poem serves as a metaphor for avoiding conflict and maintaining unity, which was important