In Sumatra, humanity was split into three distinct categories: Free Humans, Clansmen, and Ravaged Tribes.
A Free Human was a human cultivator who exercised complete freedom of speech, expression, and will. All humans part of a Kingdom or Empire belonged to this category. They had a means of cultivation unique to their own.
Once they reached the Body Stage, they would fuse mineral resources to their Spirit Container, shaping it into a material entity they termed the Human Avatar. Depending on the type of mineral used, the properties of the Human Avatar varied.
Generally, iron ore was the most common mineral used to forge a Human Avatar. Thereby, the cultivators who had forged their Spirit Container using iron would be called Iron Avatars.
