Craftsman Betep gives a little bit of the History of Perfect World at the beginning of the quest-the destruction of the barrier that kept the City of Raging Tides locked away from the rest of the world.
Old Stone Coffin is at 630 144.
When you have the ink, the task says to use it on the shrine behind the Elder, and THEN craft a talisman. But this is all done in one operation, so just next go to Craftsman Betep.
Used to be a beginner quest, but is now a level 31-41 quest.