中国语言地图集
The "Language Atlas of China" relabelled the New and Old Xiang groups as Chang-Yi and Lou-Shao respectively, and identified a third subgroup, Ji-Xu, in some parts of Western Hunan. Bao &amp; Chen (2005) split out part of "Atlas"'s Chang-Yi subgroup as a new Hengzhou subgroup, and part of Lou-Shao as a Yong-Quan subgroup. They also reclassified parts of the Ji–Xu subgroup as Southwestern Mandarin, renaming the remainder of the subgroup as Chen-Xu Xiang. Their five subgroups are: