Grey's figure appeared at the entrance of the cave. Seeing the mist covered hill, he couldn't help but spread out his spiritual senses, examining the array. When he was brought here the first time, he was barely able to cover the hill with his spiritual senses due to the array. Before refining the blood essence, he had a class with Jacob Vaergahl about arrays and the latter did his best to teach him about what he knew about array formations. This was one of Grey's biggest gains. In fact, he didn't even feel the need to explore this secret world again as he didn't think there was anything they could offer that could match the two things he received from Jacob.
Taking his attention back, he focused on the reason he hurried out of the cave, there was an intruder. Squinting his eyes, he looked in the direction where an Old man dressed in blue robes could be seen. The Old man was cautiously advancing through the formation and was very close to getting to where Grey was standing.
