Opening a Store in the Apocalypse: I Rely on Unlimited Supplies to Become Popular

[Store management + the end of the world. As a bystander, the protagonist will not meddle in other people's business and will only concentrate on being a salted fish in the shop. Since the protagonist doesn't often leave the store, most of the plot outside the store is basically from other people's perspectives. Ji Yunze started working part-time at the age of 16 and worked hard all the way until he became the boss's personal secretary at the age of 28 in a company that paid fairly well. As a result, just a few days after his good days, he encountered a car accident while delivering an urgent document to his boss, and was accidentally bound to the No. 0527 Business system and became the manager of a poorly decorated store. System: Please select three initial products from these types of products. Ji Yunze: Mineral water, toast, instant noodles. (Excluding mineral water, toast and instant noodles spanned his 12 years of life. He cannot be the only one who has experienced this hardship!!!) Passerby A: Boss, I found a small shop selling mineral water and instant noodles. They are very cheap. Passerby B: Really? The boss is really a kind person. We must remember the kindness of the boss and don't let others bully him. Ji Yunze, who had secretly finished the sumptuous restaurant manager's meal, looked away guiltily when faced with the grateful eyes of the guests. Later, with the extreme weather changes, the zombies became stronger and stronger, and even distorted. The customers had no choice but to re-establish a base within the absolute coverage of the store, and relied on the products sold in the store to regain the lost ground occupied by the zombies bit by bit.