Amber was communicating.
Lu Ban could feel that the shrine maiden was in communion with this world.
On her face, her exposed arms, and around her neck, some dazzling, dark patterns began to spread.
These patterns were filled with evil, filth, resentment, and madness, a single glance was enough to drive one to the brink of losing their sanity.
And such complex and polluted patterns were spreading from Amber's chest towards her limbs.
Having seen much, Lu Ban recognized at a glance, this was pollution.
Or rather, it was mutation brought about by pollution.
These profane patterns were the result of contamination while Amber communicated with this world.
As she spoke with the world, the world also responded to her.
It was like when Lu Ban sang to the Evil God, the Evil God would sing back to Lu Ban.
Communication and communion are never one-sided.
Even a lack of response is a response in itself.