The Zifu Sea of Knowledge before Wang Lin was like a large ball. It was clearly divided in half; one blood red and the other pitch black.
The blood red half had to be the Blood Sea and the pitch black part must be the Dead Soul Sea
While looking at the strange ball in front of him, Wang Lin remembered something. Back then, the fight between the red haired man and the remains of the Ancient God’s soul was earth shattering. They fought to kill each other with the Ancient God’s body as the battleground. In the end, the Ancient God Tu Si lost because he had already died and only had some of his soul remaining, but he split his Sea of Knowledge into two. One was the Dead Soul Sea to prevent anyone from getting the inheritance of knowledge and the other half was the Blood Sea, made to trap the red haired man.