Xing, Cai, Guang, and Yong would work better as the surnames of the rulers running those regimes; but their official names would be in accordance into the official Chinese dynastic cycle (aka, an upgraded Chinese noble title). Try a map of the old Warring States era, and start trying to pull off dynasty names from states in their rough areas (for example, the Yong state might instead be called Shu because previous states in the region were called Shu), or make up peasant leaders and just name the territory they controlled after their warlords' full name (as in, Fang Guozhen's state) , since at that point they haven't gotten enough prestige to have actual dynastic names