Zhao Hai was still moving forward in the blood sea, but his speed was not very fast. He had been observing the people from the Shadow Realm and the gray fog for the past few days. He wanted to find the core of the gray fog. He believed that there must be a core in such a gray fog. It was impossible for one person to refine all the fog. In such a large gray fog, no one's spiritual power was so strong that they could control the entire gray fog.
However, Zhao Hai could not see the core of the gray fog from below. He did not dare to enter the gray fog, nor did he dare to use his power of the will to observe the situation inside the gray fog. This was because the gray fog was an enemy's array. If he used his power of the will to observe the gray fog, he might be discovered. Thus, he could only use his eyes to see. Naturally, he could not find anything. The gray fog was so thick that it was impossible to see through the situation inside.
