In the Southern Dynasties, "Shi Shuo Xin Yu Literature" was published: Wendy wanted Dong to write poetry in seven steps, and if he failed, he would do Dafa. The answer is a poem: "Boil beans as soup and soak them as juice. Glutinous rice is burned in the kettle, and beans weep in the kettle; This is the same root, why rush to speculate with each other? " The emperor was deeply ashamed.
Cao Zhi, the youngest son of Cao Cao, was gifted since childhood and was deeply loved by his father. After Cao Cao's death, his younger brother Cao Pi became the emperor of Wei. Because Cao Zhi and Cao Xiong (the fourth son) didn't visit Cao Cao when they died, Cao Pi asked them again. Cao Xiong committed suicide because of fear. But Cao Zhi was forced into the court. Bian Shi, the mother of Cao Pi's four brothers, begged for mercy. Cao Pi gave Cao a chance to blurt out a seven-step poem, which Cao Zhi read. Cao Pi was moved by the poem and could not bear to hurt his brother, so he forgave him.