"The increase in population is actually the second biggest hurdle faced by Sin City after the inability to exit the city boundary," Goloo-Goloo said, continuing his explanation. "The size of the city is fixed, but the number of residents is variable. We can go high up until the Crystal ceiling, and below the ground until we hit the obsidian layer, and we can only go as far as the boundary of the city.
"Over the years, with the residents having kids and new residents coming in from outside, the issue of space has become a critical one. Sin City can't even trade effectively with others, and is at the mercy of those who come to our borders to trade with us.
"Such a situation naturally resulted in a resource shortage which is hard to overcome, but eventually, overcome it we did. With Celestial Dew as our main export, and a number of dedicated trading partners such as the merchant Oaka, combined with a strict hierarchy and rules, the city became a functioning, even thriving metropolis.
