For them, "one-hour delivery" is actually the most economical logistics method. By artificially demarcating areas, it can increase purchase frequency on one hand, and the logistics method is relatively controllable. However, the fatal flaw is that you have to build your own logistics system for this, and because instant delivery is required, it's impossible to reasonably arrange the logistics process. "Once an order comes in, the courier has to leave within a few minutes," according to Xu Zhiming, CEO of KuaiShuBao, this is almost single-threaded; only one order can be delivered per trip with no planning at all. And you have to prepare enough manpower to deal with various unpredictable orders, which cannot be solved by simply improving logistics efficiency. Therefore, in the case of insufficient customers in the early stage, short-distance B2C cannot alleviate logistics pressure through waiting or pressing orders, which constitutes a huge logistics cost. "Although the market environment is not good, my customer volume and sales are increasing," Liu Yuan mentioned the concept of "value per kilogram" when reflecting on Ximi.com, "in fact, the proportion of logistics costs is too high, which makes it almost impossible for categories with low gross profit and low order value." From this perspective, was the starting point of Ximi.com too high? How many consumers are willing to pay for "fast"? This is also the main reason why short-distance B2C is so picky about product categories. Take online food ordering as an example, it's basically a large-scale replication of a few products. Therefore, a delivery person carrying a box of takeout meals can cover an entire office building. The key is that catering is a rigid demand, with little change, so a relatively accurate model can be derived from past sales records, thereby achieving control over the entire supply chain. Both Liu Yuan and Xu Zhiming have met many venture capitalists, and the most headache-inducing question is "is it necessary to be so fast?" "This is hard to answer, books indeed aren't a suitable category for speed, but I can only say that if I don't do this, I will have even less chance," Xu Zhiming frankly stated. Roland Berger internet analyst Qian Hao believes that KuaiShuBao's model is too heavy, with an unpromising future, "speed can only be a highlight to attract users in the early stage, but it almost can't bring any profit. Actually, appropriately reducing the degree of speed, maybe half a day or three hours would be sufficient for users."