In short, the Jade-Border Wars were a series of battles that represent all wars fought and ended with no real resolution, concluding in a war several years later dealing with the same issues. While the name "Jade-Border War" is existant in another world, it is surely existant in theory in this one.
After all, Jade-Border Wars is only a name for a community. I'd be happy to explain it in more detail to whoever would care to hear, however. Mostly, please enjoy.