2. The preface of the poem explains Tang Xianzu's professional status at that time: penniless, down and out, and poor. When he was down and out, his friends suggested that he go to Huizhou, hoping to find an opportunity to return to Huizhou, and this opportunity should still be pinned on Guo Xu. Guo Xu has retired and returned to her hometown in Shexian County, Huizhou. As long as you look at the Guo Xu Octagonal Pavilion, which still stands in the ancient city of Shexian, you will know the position of Guo Xu in the imperial court. Although he retired, Guo Xu was both a teacher and an important minister of the emperor. As long as he is willing to recommend, Tang Xianzu's life will change.