Leo calmly explained the hierarchy that existed in the Central Alliance, there were three walls in the Central Alliance, the outer walls contained everything and everyone, it was also insanely large and covered a wide area.
The second wall that Thane had pointed out to Kayden, was where the middle-class and second-class citizens lived, if you were fault Rich then you could afford a house there but if you were poor or couldn't afford to pay the tax then you were thrown out into the slums.
On the second wall was the heart of the city, where business boomed and life was relatively better, it's also where The Academy was located, the further down you went, the more refined and expensive things became, it was simply a measure of wealth.
