There are Anhua, Huaihua and Xinhua in Hunan. What are so many cultures?

This has historical roots. In the Song Dynasty, the imperial court wanted to destroy this area of Hunan (Hunan was still a very remote place at that time), and the army came to kill many indigenous people and put these places under its own rule, so they were all named after "Hua". For example, Xinhua means newly naturalized.