My Grocery Store Transmigrated to Doomsday

【Modern Transmigration to Doomsday + Brain-hole + System】Su Miaomiao, unemployed right after graduating from university, had to return to her hometown and open a small grocery store. The business was so bad that even the mice didn't want to visit.Unexpectedly bound to a system, her grocery store was directly connected to the 15th year of the doomsday.The grocery store had a rich variety of goods, all kinds of food, daily necessities, and clothes and shoes, all the supplies needed for the doomsday.What to do without crystal cores? Then use gold to exchange.To earn more money, she traveled through major bases and opened branch stores.Su Miaomiao looked gentle and weak, but no one dared to provoke her, because the people around her were all the famous big shots on the ability list!