Which province is Hunan people closest to?

In terms of blood relationship, Hunan people are closest to Jiangxi people. The two wars at the end of Yuan Dynasty and the beginning of Ming Dynasty led to a serious decrease in population and barren land in Hunan. In addition to the Ming Dynasty and the early Qing Dynasty, there were two large-scale immigration processes from Jiangxi. At that time, Jiangxi was relatively less affected by the war and its population was relatively dense, resulting in more than half of Hunan immigrants, and most of them came from Jiangxi. Every area of Xiang dialect is influenced by Gan dialect, and the mountainous area at the junction of eastern Hunan and Jiangxi is a pure Gan dialect area.