I See the Aura of the Great Emperor in All My Disciples

As everyone knows, there is a power in the southern region that absolutely cannot be provoked—the Grass Hall.
The eldest disciple is the Sword Saint of the southern region, with a godly understanding of swords.
The second disciple is the Eternal Empress, who ruled an era.
The third disciple is a great scholar of the current generation, the reincarnation of the immortal of literature.
The fourth disciple is the reincarnation of a demon god, suppressing the Nine Hells.
Lu Changsheng: Me? I'm nothing special, just their master.