Following the Ghost sure became a mental hassle. It kept screaming in an ear splitting matter and kept offering the same fortune over and over, however overtime it raised the treasure's value. Which of course gave a strong sense that this Ghost is lying, hard even. Just to survive or the 7 Sources know for what else.
The Ghost became so loud as they got closer to the tree, that Chan had to cover his ears here and there. Stress and Anxiety arose uncontrollably because of those screams. It was a sacrifice he was forced to put up with in order to complete the task. But lucky for him, he finally arrived close enough to what he has been sleeping in the cold for. The Ghost Tree. He stopped on his spot and just watched the Ghost being sucked to it's inevitable fate, as if saying goodbye to it. Quite frankly, he was glad to finally get some peace. His head hurts from all of the screaming.