We don't have any sort of information network. If you can't arrange for some of our fellow disciples to act as these "State Governors"—to coordinate everything and link it all together—it's going to be extremely difficult to unify a jurisdiction this large.
And even if you manage to unify it, without some form of constant oversight, mortal ambition being what it is, you'll have turmoil within a few hundred years. The transition of power between each generation of rulers will become a vicious power struggle.
You'll go through all this effort to establish it, only for major problems to erupt the moment you go into seclusion. People will be fighting and killing each other all over the place, and you, Martial Uncle, will have no free time to focus on your cultivation.
