Difficulty

Regardless, he didn't necessarily resist learning more about the Martial Contest.

The contest was limited to the Lower Realms. The difficulty of holding a contest grew astronomically with each Realm.

Martial Apprentices were by far the easiest to hold a contest surrounding due to how grounded and shackled by conventional human limits they were. This meant that important aspects of the planning such as infrastructural constraints, observation viability, spectator safety, battlefield volume, etc., were all much easier to handle. You could have a large number of spectators fit in within a reasonable amount of area that was reasonably close to the battle arena, and they would be able to follow the fight to just barely enough of a degree where they would be entertained. It was possible to shield even a large audience from the Apprentice-level techniques and ensure their safety with ease.