The Strongest Middleman Across the Planes

[Main story complete; bonus chapters updating] Qi Yan accidentally binds to a cross-dimensional trading System and becomes the owner of a Blue Star department store. Before binding to the System, he was promised free room and board plus commissions of over ten thousand. After binding, that promise turns into a starting capital of one hundred and a goal of one hundred billion. If he doesn't make money, he dies. To make money, Qi Yan will stop at nothing. He's even developed countless specialty products exclusively for his own supermarket. At the negotiating table, the leader of a base in the post-apocalyptic world lets out a long sigh. “Boss Qi, zombies are everywhere in the apocalypse, and everyone is as helpless as an ant... To save as many lives as possible, I'd like to buy some special products from you. Do you have anything in stock?” Special products? How special could they be? Qi Yan thinks it over and figures he probably knows what the other man has in mind. He immediately assures him, “You want special products to save more lives? Don't worry, we've got everything here. If I get the chance, I'll find you a few scientists to help develop a vaccine and end the apocalypse!” The scientists from the interstellar world should be capable of making a vaccine, right? The base leader had only meant to ask for details about guns and ammunition: “...What? Scientists?” It might not be a bad idea... With his keen eye for discovering the true value of things, Qi Yan's business keeps booming. What? A scientist being hunted by the capitalists for exposing the truth? Why not see if he can be sent over to the apocalypse? One wants to escape, the other wants technology. Smuggling someone from the interstellar world to the apocalypse could earn him money twice over. What? Ghosts and monsters have taken over an entire city in the strange world and are running rampant? He'll ask the wizards from the Western Fantasy world and the ghost cultivators from the cultivation world whether they'd be interested. The ghosts might be dangerous, but those big shots should be strong enough to come pick them up themselves. Come to think of it, there are also all those zombies that keep wandering around outside the store... Since he's got time on his hands, why not buy some talisman paper from the cultivation world and control the zombies to provide VIP customers with a custom home-delivery service? He can charge an extra two crystal cores for the delivery service and the cost of the talismans. After the goods arrive, customers can earn back a crystal core themselves, enjoy the thrill of fighting zombies, and even sell the zombies back to the supermarket. A win-win situation! He'll make a fortune in no time. Qi Yan: Making money is so much fun. A goal of one hundred billion? Easily achieved. Notes: 1. The protagonist will stop at nothing to make money. 2. Daily updates. Chapters are scheduled for 6 a.m. from the stockpile. Since the story is nearing its end, updates will increase to three chapters a day. 3. Barring unforeseen circumstances, this story will go premium on May 20. Thanks to all the lovely readers for your support and encouragement. 4. To be continued; more details will be added later... Theme: Keep your imagination alive.