Right now, the two massive entities that appeared behind Dugu Wen were none of those other than the two ferocious dragons.
Back then, within the Heaven-Emperor Heaven's Southern Dipper territory's Supreme Prodigy Secret Territory, Huan'er had reached a peculiar agreement with the two ferocious dragons, taking them away from the Supreme Prodigy Secret Territory. Because of this, they had allowed Duan Lingtian and the others to enter the God's Secret Treasury ahead of time—that is, the ruins of the Gods' Plane.
In the end, with the Cleansing World Divine Water acting as a matchmaker, the two ferocious dragons became willing to follow Duan Lingtian temporarily, until a certain time when Duan Lingtian would return their freedom.
Chapter 3294