There are two worlds in space, one is called Yuan and the other is called Yi. The lives and deaths of the people in the two worlds depend on each other. If you die in one world, you will die at the same time in the other world. A mysterious woman who calls herself a "dream interpreter" told Nian Yangxiao in the Yuan world. The sudden death of Nian Zhengyuan, the father of Nian Yangxiao in the Yuan world, also confirmed this. In order to protect the person he admired, Kong Linghui, from accidental death, Nian Yangxiao resolutely crossed the edge of the two worlds and came to the Yi world to find a woman with a red mark on her body, because this woman would directly lead to the death of Kong Linghui in the Yi world and directly threaten the life of the person he admired. For this reason, while Nian Yangxiao entered the Yi world to gain unimaginable abilities, he could never return to the world he came back from.