I love this novel, it's exactly what I was looking for for a while. In my opinion, for anyone looking for a novel in which the protagonist is intelligent and knows how to govern, this is the right place
The common Qi realm was separated into 6 realms each with 9 levels. They were Skin Tempering, Muscle Tempering, Bone Tempering, Organ Tempering, Meridian Tempering, and Mind tempering.