Speak to Cheung and click "The Cursed Home". She will talk about the Cursed Home on the outskirts of Hwarone.
The home was owned by an aspiring mage named Guaili and there are rumors that he is still inside.
She will ask you to go check out the Home.
Leave the Inn and enter Cursed Home Floor 1 at (7,68).
You can skip right through this floor.
Proceed to Cursed Home Room 2 at (6,30).
On Cursed Home Room 3 you will notice several rooms. Your group must clear two of them.
Once you have cleared two rooms Proceed to Cursed Home Room 4 at (25,48).