Wuyue was not a large kingdom compared to many of its neighbors.
Although initially 12 prefectures (州), it later consisted of 13 prefectures and 86 counties or sub-prefectures (縣).
Fuzhou was incorporated into Wuyue as its 13th prefecture, after the Min court declared allegiance to it as they were besieged by Southern Tang.

Former Administrative Divisions
Changzhou (常州) from 886–891 CE, ceded to Yang Xingmi
Runzhou (潤州) from 886–891 CE, ceded to Yang Xingmi
Wuyue was not a large kingdom compared to many of its neighbors. Although initially 12 prefectures (州), it later consisted of 13 prefectures and 86 counties or sub-prefectures (縣). Fuzhou was incorporated into Wuyue as its 13th prefecture, after the Min court declared allegiance to it as they were besieged by Southern Tang.
Former Administrative Divisions
Changzhou (常州) from 886–891 CE, ceded to Yang Xingmi
Runzhou (潤州) from 886–891 CE, ceded to Yang Xingmi
Wuyue