《水经注·卷三十八》
魏甘露二年，吴主孙亮分出长沙西部设置衡阳郡，治所在湘南；后来太守何承天把治所迁到湘西。
魏甘露二年，吴孙亮分长沙西部立治，晋湘南太守何承天徙治湘西矣。
In the second year of the Wei Ganlu era, Sun Liang, the King of Wu, separated the west of Changsha to establish Hengyang County, with its administrative centre in Shan County; later the prefect, He Chengtian, moved the administrative centre to Xiangxi.