The four cities at the foot of Yujing Mountain each have their own responsibilities.
Azure Dragon City is the residence of imperial relatives and regional vassal kings within the capital. With the Great Xia having been established for three hundred years, the number of vassal kings and imperial relatives is by no means small. Fortunately, the Great Xia's founding Emperor was long aware of the dangers posed by vassal kings and, right at the inception of the dynasty, neutralized the hidden threat through the policy of stripping vassal domains. Moreover, the Great Xia's method was even more ruthless: after three generations, titles are not conferred without military merit.
This means that even if a family holds a hereditary title, once three generations pass without military achievements, the title is reclaimed, and only the wealth remains.
Chapter 149