Du Fu's "collection of sixty volumes" was lost early. In the second year of Baoyuan in the Northern Song Dynasty (139), there were 1,45 collections by Wang Zhu, which were made up of 18 volumes, entitled "Du Gongbu Collection". Qian Qianyi compiled Annotations on Du Gongbu Collection. Yang Lun said: "Since the Six Dynasties, Yuefu has imitated plagiarism, and Chen Xiangyin is the most disgusting. When Zi Mei came out, she felt what she felt at that time. When she went to Benjamin, she was in trouble, and the people were poor. She set up questions at will and tried to get rid of the stereotypes of her predecessors.