The Life-and-Death Mirror King was something that didn't really exist in the plot of a novel. In novels, the Life-and-Death Mirror King usually referred to a mysterious weapon or treasure that could resurrect or extend the lifespan of a person or object. The appearance of the Life-and-Death Mirror King was usually intertwined with other novel plots in some fantasy, fantasy, or science fiction novels to form a complex novel world view. In some novels, the appearance of the Life-and-Death Mirror King was closely related to the fate of mankind and even determined the survival of the entire race.