Seven-Step Poem

The Seven-Step Poem is the name given to Cao Zhi’s two rapid poetic responses when his brother Cao Pi, seeking to kill him, sets him successive compositional challenges. The second poem turns beans and their shared root into an oblique plea against kin destroying kin; moved to tears, Cao Pi spares Cao Zhi but demotes him. The episode makes poetry both a test of exceptional skill and the means by which a threatened brother changes the outcome of a family conflict.

The challenge

After Cao Pi’s accession, his brother Cao Zhi, lord of Linzi, is known both as a poet and for his indulgent drinking. He initially refuses to answer Cao Pi’s requests to come pay homage. Cao Pi’s men seize Cao Zhi and the Ding brothers, two writers and drinking companions; Cao Pi orders the Ding brothers executed and brings Cao Zhi before him. Though he wants to kill his brother, he is asked by their mother to show compassion. Instead, he imposes a test: Cao Zhi must walk seven paces and compose a poem based on a drawing of two bulls on a wall, one of which has died after fighting and fallen into a well. He is forbidden simply to state what the picture depicts. The seven-step constraint turns a demand for verbal invention into an immediate trial of life and death.

Two poems, two forms of indirection

Cao Zhi completes the steps and recites a new poem about the contest between the bulls. Its conclusion distinguishes defeat from lack of strength: the defeated animal has lost because its qi has nearly run out. The response satisfies the challenge by shaping the drawing into verse rather than merely naming its contents, and those present are astonished.

Cao Pi then gives Cao Zhi a similar task, this time requiring him to express the relationship between them without using the word “brother.” Cao Zhi answers with the image of beans boiling over a fire made from their own stalk: a voice rises from the pot to ask why, when both come from the same root, one is cooking the other. The image makes the family relationship legible without stating it directly. The beans and stalk are not simply the objects of a cooking scene; their shared origin gives the scene its force as an appeal to Cao Pi.

Appeal and consequence

Cao Pi is so moved by the second poem that he bursts into tears. Their mother pleads again for Cao Zhi’s life. Cao Pi agrees to spare him, but also demotes him, a consequence the narrative links to concern both for his brother and for his wastrel lifestyle. Cao Zhi gratefully accepts the lower rank and leaves to take responsibility for governing Anxiang. The poem therefore wins his life without restoring his former standing: its success changes the immediate threat, while political authority remains with Cao Pi.

Meaning in the narrative

The episode sets poetic ingenuity against coercive power. Cao Pi controls the terms of the test and has already shown the deadly reach of his command by ordering the Ding brothers’ execution; Cao Zhi has only seven paces in which to answer. Yet the second poem changes the encounter by making the harm of the conflict visible through kinship and shared origin. Its indirectness is central: the required word is absent, but the relationship it names becomes impossible to ignore. Cao Pi’s tears and decision to spare Cao Zhi mark the poem’s practical consequence, while the demotion and departure keep that moment of mercy from becoming a reconciliation of equals.