Cultivation

According to Xie Yan, there are three known cultivation realms, and each realm is divided into nine layers. There is an insurmountable difference between the power of two successive realms, meaning that practitioners of a lower realm cannot defeat practitioners of a higher realm, except in rare situations. Hierarchy in the Han empire is determined based on one's cultivation progress. It is implied that cultivation progress becomes slower with age. It is possible for one's cultivation to regress due to heavy injuries, or when a cultivation method refines the True Energy of its practitioner.

The worlds that Xie Yan travels to have lesser power in comparison to that in the main world of the Han empire.

Realms
This chart provides a summary and overview of the Cultivation system in I'm An Evil God.