[quote=Iluvatar]
I think it's more than one planet, but I just assumed from these sentences' content. I king of visualized it as a semi-magical organisation similar to the Galactic Federation in Metroid.EDIT: Wow, I just posted at the same time as Lekkuen. nvm!
[/quote]

Well That's because several planets exist and such, with their own civilizations. But the Zhu empire mostly focuses on one planet and small segments of others where their land ended up.