For eight years, Lao Chen has been responsible for vegetable delivery to a dozen surrounding restaurants, running to the market in the early hours of the morning year-round, delivering goods whenever called, and solving many procurement difficulties for the shop owners. However, the middle price difference of a few cents per catty accumulates over time into a non-negligible cost. Now suppliers propose direct delivery, saving intermediate links and offering more affordable prices. After calculation by the various bosses, they finally decided to change channels, and a cooperation of many years calmly and realistically came to a close.