In the End of the World, I Brought the Supermarket with Me

[System + no cp + apocalypse + invincible heroine + many supporting characters + management + make a fortune] After Xia Lingyun was bound by the system, she was transported to an apocalyptic plane where zombies were rampant and supplies were in short supply. Xia Lingyun didn't panic at all with the supermarket in hand, and even started a business, buying as much bread, biscuits and instant noodles as he wanted, and the strong people in the apocalypse rushed to buy them. Someone came to rob? Xia Lingyun was fearless and waved her finger, and the person who came was scolded so hard that they no longer dared to trouble her. Someone came to the door with gold bars? Xia Lingyun smiled happily, cleaning the house and welcoming the guests.