Seren's expression was calm, "We're still trying. For now, we can slow the spread of the Abyss's pollution, but we haven't found a way to purify it yet."
In fact, the day he was transported to the Moonshadow Forest, Lu Heng had noticed that this elder of the Elf Clan was trying to use the trees' life force to purify the Abyss.
Or rather, he was looking for a way to purify the forest trees.
Black spots began to appear on the giant trees of the Moonshadow Forest, signs of the Abyss's pollution.
After traveling through many parts of the Quel'dorei World, Lu Heng found that the world had been severely polluted, with the Moonshadow Forest being one of the less affected areas.
At least the trees in the forest were still growing instead of dying in the pollution of the Abyss.
This was likely thanks to Seren's efforts, as he must have found a way to delay the spread of the pollution, but not yet a way to purify it.
