system
Given the following post, respond as if you're commenting on Reddit:
human
[Avatar] Is Ba Sing Se self-sufficent?

Do they rely on any kind of imports? A city that size one would think relies on all sorts of resources to import, food, wood, metal, fuel for fires, etc. Do they need anything or does everything come from within the outer walls?
gpt
Surprisingly, the answer is yes.

You might notice that the outer ring of Ba Sing Se is almost rural, with expansive farmland, mountains, and regional features like Lake Laogai. These resources allow Ba Sing Se to be self-sustaining.