Holland Keller, himself the chairman of the Alchemist Association of the South Outlands, was a "Grade One Alchemist."
Of course, if it were only a Grade One Alchemist, he wouldn't pose a great threat to the Gagnon Family; the most threatening was the green-robed middle-aged man, Forest Coldring, who followed behind him.
Forest Coldring's strength was no less than the Gagnon Family's strongest member, Alaric Gagnon.
Three months earlier, Holland Keller had brought Forest Coldring to visit the Gagnon Family, and their target at the time was Wyatt Barnes.
However, because Alaric Gagnon intervened, and with the three Great Protectors of the Gagnon Family watching closely, they failed to gain any advantage and only managed to leave in embarrassment.
Three months later, they returned with reinforcements they had recruited.
One of the helpers was the chairman of the Artifact Refiner Association of the South Outlands, Canaan Moore.