C195 The Upgrading System.
Lin Tan went on to clarify, "In general, the academy's advancement system is categorized into five tiers: Servant Disciple, entry-level disciple, Outer Sect disciple, Inner Sect disciple, and Core Disciple."
"Entry-level disciples are akin to freshmen in the University of Overlords system, Outer Sect disciples to sophomores, Inner Sect disciples to juniors, and Core Disciples to seniors