Under what circumstances did Bai Juyi write Pipa Xing?

Pipa Trip was written in the autumn of the 11th year of Yuanhe (AD 8 16). Bai Juyi was forty-five years old and was appointed as Jiangzhou Sima. This poem was written the year after he was demoted to Jiangzhou. By describing the pipa girl's superb acting skills and bleak life experience, the work expresses the author's personal frustration and sadness at her political blow and relegation. This paper introduces the time and place of the story described in the long poem Pipa Xing, and the origin of the author's writing this poem, and makes a preface before the poem in the original text. In fact, it has simply summarized the basic content of this long poem. Left shift: refers to demotion and official demotion. Ganpukou: where Ganshui meets the Yangtze River, in the west of Jiujiang City. Kyoto Tone: The charm of Chang 'an, the capital, refers to the regional characteristics and superb acting skills of the tunes, which are not available in ordinary places. Good talent: used to address pipa players in the Tang Dynasty. Order wine: send someone to prepare the banquet. Poor, sad look. Nature: the appearance of happiness. Relocation: refers to the sorrow of being exiled. The author said that he was exiled to Jiujiang for a year and was happy every day. Only today, he listened to the pipa girl's performance, which aroused his sorrow in exile. This statement is necessary for writing an article, and readers will certainly not believe him. Long sentence: refers to seven-character ancient poems.