In Qifa, the subject and object refer to Wu Ke and the king of Chu. Question and answer between subject and object is a common literary expression, which shows the ideological collision and emotional exchange between different roles through dialogue. In this poem, Wu Ke and the King of Chu expressed their feelings and views through questions and answers. This structure can help readers understand the inner world of the characters more deeply, and at the same time increase the artistic charm of the works.