I come from the inner city. There are many people surnamed Fan in Neixiang. Several of my classmates are also surnamed Fan. It's from Mashankou Town. You can go there and have a look.
In addition, the people in Neixiang are very concerned about the forum in http://www.neixiang.org/bbs/, and they are also very enthusiastic. If you ask the above questions, you will get the answer.