Seeing that scene, Xu Zong was slightly taken aback, memories of an event from long ago flashed in his mind, and he immediately understood.

"This sea of blood envelops the outside of this great world, and the blood clots that occasionally pierce through the membrane wall, could they be the things that once tried to assassinate Luo Feng?"

As he looked intently, unlike the blood seas of other worlds, this one seemed to contain a massive sphere, as if it held a world within, continuously invading the interior.

Xu Zong's heart stirred, and he sent out an avatar to tentatively touch the blood sea.