A Surprise Visit

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.