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Well, I don't think that's a canonical map of Yu-Shan (though I could be wrong). And the Unconquered Sun still exists, and even mostly forgotten, is pretty much the most powerful of the Incarna.
Oh - and since it wasn't clear, that's supposed to be a map of Heaven, the Celestial City (which, all told, is about the size of North America). The various Gates lead to various places in Creation.