Du Fu's poems handed down from ancient times are the most extensive in the Tang Dynasty and one of the most outstanding poets in the Tang Dynasty.
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Du Fu joined the army in Tang Suzong from June in the first year of Gan Yuan (AD 758) to autumn in the second year of Gan Yuan (AD 759). Du Fuyuan was appointed as the right-hand man of the DPRK. Because of his outspoken admonition, he angered powerful people and was demoted to Huazhou (now Huaxian County), where he was responsible for sacrifices, ceremonies, schools, elections, medical care and examinations.
After arriving in Iowa, Du Fu was very depressed and upset. He often goes to Zhengxian Pavilion on the Xixi River (near the old viewing platform in Xinglin Town today) to relieve his worries. In his poems, such as Pavilion in Zhengxian County, Bitter Story in Early Autumn, and Independent Skinny Horse Walking, he expressed his sigh and resentment at his frustrated official career, the bleak world and the promotion of treacherous men.
Despite personal misfortunes, Du Fu always cared about the country and the people. During the An Shi Rebellion, he always paid attention to the development of the current situation. During this period, he wrote two articles, Guo's Situation in Huazhou and Five Questions about the Examiners in Hehuazhou, offering suggestions for exterminating the Anshi Rebellion and considering how to reduce the burden on the people. When the soldiers and horses of Li, the main force of the rebel army, passed through Huazhou, they wrote a poem "Two Kansai Soldiers Going to Guanzhong for Standby" to express their patriotic enthusiasm.
At the end of the first year of Gan Yuan (AD 758), Du Fu temporarily left Huazhou to visit relatives in Luoyang and Yanshi (both in today's Henan Province). In March of the following year, the battle between Tang Jun and Yecheng (now Anyang, Henan Province) broke out and Tang Jun was defeated.
On his way back to Huazhou from Luoyang, Du Fu was deeply touched by the endless disasters brought by the war and the patriotic behavior of people who endured humiliation in the war. He wrote immortal epics-three officials (Xin 'an official, Shihu official, Tongguan official) and three farewell (newly married, resigned, homeless). "I am full of sadness and trouble because people travel far."