The ground had no restrictions, so Lin Yun began to diligently burrow downward.
However, there was a limit to what Divine Sense could do, and after probing merely ten feet down, Lin Yun felt his spirit grow weary and couldn't go any further.
This sensation was much more difficult than when he had first explored Holy Spring Lake, perhaps because the attributes were not as well-matched, or maybe because Divine Sense couldn't venture too far from the body.
Yet, his current Divine Sense, if released outward as usual, should have extended about fifty feet, but here it had been greatly diminished, despite having detected no restrictions. This perhaps could indirectly confirm his initial intuition was correct.
There truly were mysteries beneath the ground.
This was the first time Lin Yun had ever felt spiritual fatigue; he collapsed and immediately fell asleep.