A mere group of cultists was naturally no match for Duanmu Huai. However, the Ancient God they worshiped had piqued his interest. After helping the Dwarfs reclaim Dan Mod, Duanmu Huai found Salgas and asked him about the Ancient Gods.
According to Salgas, Azeroth had been ruled by the Ancient Gods long ago, during what was known as the Dark Empire Era. Later, the Dark Empire Era ended, and the Ancient Gods who had ruled Azeroth were sealed away. There were currently three sealed Ancient Gods: N'Zoth, C'Thun, and Yogg-Saron.
As for the locations of the three Ancient Gods, Salgas did not know much either. He only knew that C'Thun had been sealed in Ahn'Qiraj. The followers of Twilight's Hammer hoped that the Ancient Gods they worshiped would one day break free of their seals and return to the world. As for why those lunatics wanted that... nobody could say.
Although the information was limited, it was enough for Duanmu Huai. His own Great Old One needed to level up as well, and devouring other Great Old Ones was the simplest way to do so. Since there were still three Great Old Ones in this world, and they were all sealed-up weaklings, he could hardly be blamed for showing them no mercy...
Since he had encountered Dwarfs here, Duanmu Huai could not be bothered to make another trip to Ironforge. Salgas also thumped his chest and guaranteed that he would inform the Dwarfs about Dan'garok. Thus, Duanmu Huai handed the matter over to Salgas and took the others aboard a ship from Menethil Harbor to Stormwind City.
He did not want to stay in that filthy, ugly swamp for another minute.
"Phew..."
Standing on the deck and gazing at the distant sea, the girls breathed sighs of relief. Compared to