The so-called deep caves weren't as deep as in the name but the place was bizarre and isolated that no one had the balls to go up there apart from Ji Yao. Even he had only gone up there a handful of times.
Now, what would prompt him to go to such a creepy place? Well, the first time he went up there it was entirely by accident. He was barely eight years old and once he entered he found that he couldn't get out easily.
It was like the moment he stepped foot inside, his mind was spinning and his judgement clouded. He was confused and disoriented. By the time he found out he could clear his mind by engaging his aether he had already been trapped in this place for a day.
With his mind clear he followed the direction at which his seraphic energy was leading him towards. His seraphic energy was drawn to a clear blue lake a few feet underground. This clear lake was surrounded by a tranquil aura that penetrated his atherial veins healing and calming his injured soul.