I Do Shady Business Across the Myriad Worlds

Down-on-his-luck college student Jiang Yu gets a System golden finger by chance and becomes the most badass... street vendor in the world. What? You're saying this painting of chicks pecking at rice is an authentic Tang Bohu? What? You even brought out Li Yunlong's Italian cannon? That's too much. Why are you selling me the Sunflower Manual? He travels through countless worlds, buying and selling goods, and becomes the most powerful profiteer in all the worlds.