After dying, Chen Heng finds that he has transmigrated to an alternate reality: everything is the same, except the world is now a Wuxia world heavily influenced by martial arts! Not only this, he discovers that he has a Fantasy Simulator, from which he obtains rewards that make him incredibly powerful in his new reality as well. Martial arts, immortal cultivation, and overpowered abilities--all of this begins from a single simulation!
DDBBM is incredible; except for the general trends in xianxia novels (power levels making a character useful after a jump in setting) and one forgettable side character, it is a pure joy to read.