Based on Shawn's story, the change in the Eternal Frozen Spring really was related to the return of the Dark Specters.
This was actually good news for Marvin.
The [Underdark Winter] was a large-scale storyline quest, and although Marvin didn't directly participate in it, he had read many messages about it in the forums and had a pretty good understanding of the quest.
The Eternal Frozen Spring was a very mysterious place, known as the coldest place in the world.
Even the peak of the snowy mountain in the Far North wasn't as cold as the Eternal Frozen Spring.
Some believed that the Ice God slumbered below the Eternal Frozen Spring, while others said that the Eternal Frozen Spring was the convergence point of the Universe's cold essences.
But whatever the case, the Eternal Frozen Spring was a very dangerous area.
When the [Final Ghost Mother] instance was unveiled, countless guilds had been wiped out at the Eternal Frozen Spring.