I Open a Supermarket in Bianjing

Lin Yi, a senior majoring in history, bought a ring for fifty yuan and found that there was a space as big as a football field and a bronze door leading to the Yuanfeng period of the Northern Song Dynasty. Outside the door is a poor town outside Bianjing City, where the people can't even afford salt. Lin Yi looked at the Coca-Cola lighter in his hand, then at the scraps of silver in the ancient man's pocket, and silently wrote four words in his notebook: "Dimensionality reduction strike." From the small grocery stalls in the town to the most popular specialty shop in Bianjing City. The salt is half cheaper than the official ones, the sugar is thinner than the tributes, and the toilet paper makes the owner of the silk shop doubt his life. When all the forces came to their senses, he discovered that a few people who shouldn't have appeared were quietly added to his client list - such as a certain person named Zhao who visited incognito privately, and his reformist prime minister who later entered the history books. Lin Yi weighed the ring with an innocent expression: "I really just want to open a supermarket."