What dynasty background did the author of the poem Nanpu Bie have?

Bai Juyi was born in Xinzheng, Zhengzhou (now Henan) from the seventh year of Dali (772) to the fifteenth year of Zhenyuan (799). Smart since childhood, learned to write poetry at the age of 5 or 6, and was familiar with phonology at the age of 9. 1 1 years old, because of the war between the two rivers, he fled from Xingyang to Fuli, Xuzhou (now Su County, Anhui Province), and soon went south to Vietnam and became the cousin of the county magistrate in Hangzhou. During his wandering life in 1956, Bai Juyi came into contact with the sufferings of the people and was influenced by two poets, Wei and Fang Rufu, who were the secretariat of Suzhou and Hangzhou at that time. He wrote poems such as "A Letter to Xuzhou Brothers for Sending a Guest to the North from the South of the Yangtze River" and "Farewell to Ancient Grass". At the age of 65,438+05,65,438+06, he decided to be a scholar and work hard. Later, when my father died and my mother became ill, I lived on my eldest brother Bai Youwen's meager salary and traveled between Poyang and Luoyang, and my life was very difficult.