The black wings of the demon god make him even more powerful, and Fang and the others are no match for them. Fang says that the nocturnal woman cannot be killed because she is a sword-spirit, so they cannot run away. The fog is getting thicker and thicker, Fang says, and they might have gotten into the core, but they are trapped inside. They can fight when the fog is out of their range, but Fang says they should first kill Luo zheng and then discuss how to escape the fog. They decide to go back to the way they came, but the fog still surrounds them. They are still inside the fog, and the jade butterfly is still burning