Apocalypse: Transmigrating Between Two Worlds to Build a Supreme Life

[Dual transmigration + apocalypse + zombies + urban life + wish fulfillment + face-slapping + ruthless protagonist + no holier-than-thou behavior] Lin Ye gains a System that lets him travel between the zombie world and the real world. He buys huge quantities of supplies in the real world, then sells them for astronomical prices in the zombie world. A million for a loaf of bread sounds fair, right? A hundred million for four dishes and a soup, no problem, right? Beautiful women beg him to take them in, and he pockets one fortune after another. Killing zombies earns System points that he can use to strengthen his body and gain special skills. In the zombie world, he's an all-powerful king! With the wealth and secrets he gained in the zombie world, Lin Ye builds his own business empire in the real world. Financial tycoons and capitalists all bow at his feet! You don't accept that? You wouldn't want your little secrets getting out, would you? With the System on his side, even marrying into a wealthy family can't hold him back! The Lin Ye everyone once looked down on now stands at the pinnacle of the world!