Struck Dead by Lightning, the System Takes Me to Run a Supermarket in the Apocalypse

Mu Lan was once the most mysterious test subject in the 31st century, Subject No. 1. Her abilities were so outrageously powerful that the Will of Heaven could not tolerate her, and a bolt of lightning struck her dead. The System appeared just in time, bringing her to a crumbling apocalypse and bestowing upon her the honorary title of Space-Time Merchant. Mu Lan: “What did you bring me here for?” System: “Our goal is to open a supermarket and reach the pinnacle of life!” Mu Lan: “...” When the apocalypse arrived, natural and man-made disasters came one after another, with zombies making guest appearances too. Human survival became unimaginably difficult. While everyone else struggled desperately to stay alive, Mu Lan sat at the bar watching dramas and eating self-heating hot pot. Even her cat ate better than everyone else! Her scumbag biological father showed up: “Just give me the supermarket, and I’ll let your mother be enshrined in my family’s ancestral hall.” Mu Lan: “The apocalypse is here. Are you sure the ancestors buried in your family hall, generations one through twelve hundred and thirty-four, haven’t been forced into some zombie love? Bones are rich in calcium, after all, and make for a nutritious dish.” Her scumbag biological sister showed up: “We’re sisters, after all. How could we hold a grudge overnight? It’s dangerous for a young woman like you to run a business in public during the apocalypse.” Mu Lan: “How is being your older sister dangerous? A mosquito could bite your face and you’d die of poisoning!” Her ex-fiancé showed up: “Lanlan, I only made the same mistake every man makes. I...” “Did you come straight out of the Mogao Caves in Dunhuang? You’ve got so many murals!” Mu Lan was fed up, so she simply opened the door and let the cat out. Can I tell you all that I’m not the original owner of this body? No! So back off, back off, back off... (System + business management + apocalypse + putting scumbags in their place + invincible heroine + food + special abilities + trading) (P.S. Whether there’s a male lead is up to you.)