The author of "Seven Steps of Poetry" is Cao Zhi, a poet during the Three Kingdoms period. The main idea of ??the poem is: the beans are boiling in the pot in order to filter out the residue of the beans and leave the bean juice for making soup; the bean straw is burning under the pot, and the beans are crying inside the pot; the beans and the bean straw are originally from the same root. How could the bean straw be boiling the beans with such urgency? The first two sentences describe the daily life phenomenon of burning beans and boiling beans. The last sentence changed the direction and concentrated on expressing Cao Zhi's inner sorrow and indignation. He was obviously questioning Cao Pi: You and I are brothers, why do we have to fight each other so hard?