Relying solely on the foundation of civilization and the level base of the Mythical Secret Realm itself.
For example, in the mythology of the Eastern Country, Great Sage Equalling Heaven Sun Wukong's force should be about the same as Erlang God Yang Jian, but if Yang Jian were to be materialized within a Level 51 Mythical Secret Realm, while Sun Wukong were not materialized until the Secret Realm reached Seventieth Level, the initial power disparity between the two would be self-evident.
This could even result in a power discrepancy not consistent with mythological settings.
It would, overall, depend on the evolution within Human Civilization's mythical legends.
Even so, the value of this reward remained incredibly potent.
