Brother Pang's Trial: Combating Corruption

The first step is to defeat a 68+++ dryad on the corrupted ground at the far end of the mystic lake. Return to Pang with a book. Talk to the song keeper. Talk to the woodcarver in the mystic lake (near ZI on the right) Defeat the two named pirates in the nearby camp. Follow the map to the far end of mystic lake again, to confront the pirate chieftain.

(I had to go to work at this point.)