Poor bones by the river, I am still a dream girl. Which tragic war in history does this poem refer to?

Here, the author Chen Tao refers to it in general, but we can still analyze which war period he wrote. (about 8 12-888) and Xuanzong Dazhong (847-860) lived in Xishan, Hongzhou (in the west of Xinjian County, Jiangxi Province) and did not know where to go. So it is most likely that he was the most frustrated between 830 and 847. It was during this period that Tang Wuzong defeated Ujikhan and his followers abroad and put down the rebellion in Luze Town at home, so these are probably described. Please adopt what you like, thank humbly.