Li De Yu, as a Prime Minister, was the pioneer in the history who started to write in the form of ”Ci Fu” to savor the mind of conversation with Tao Qian, Li De Yu reflected his mind and emotion with Tao Qian during the recall. His emotional writing during the recall did not only enrich the Historiography of Tang Dynasty, but also provide the Literary History of the Tang Dynasty and the writing history of pastoral with a ”Ci Fu” case of reference value. It mirrors the deep culture meaning of intertextuality of ”Fu Xue” of Tang Dynasty and Historiography.