The heroine's whole family (parents, brother, she) travels to a refugee village in the famine era, and they bring a "modern supermarket" golden finger (only for the whole family). Starting from selling "fairy water" (mineral water) and "anti-hungry elixir" (compressed biscuits), he gradually established the "Su's Trading Company" in ancient times - opening a large canteen, building a chain of inns, and setting up a logistics escort agency. The whole family worked together to use modern management knowledge to reduce dimensionality and attack ancient business; using the logistics network to collect intelligence, the heroine accidentally discovered that the family's time travel was not accidental, and behind it was the treasure of the previous dynasty.