Some settings in cannon fodder

Monk level: Ten realms of Qi Training, Foundation Building, Jindan, Yuan Infant, Transformation of God, Refining Void, Integration, Tribulation, and Mahayana.

Mahayana is quite an immortal in the human world.

Magic weapon level: Levels 1-9 correspond to the monk's Qi Training-Tribulation Period.

This is true for elixirs, formations, prohibitions, charms, and so on.