In the past year, the offline consumption scene has revived, with busy areas such as scenic spots, restaurants, internet famous cities, and the B1 and B2 floors (i.e. the underground first and second floors) of shopping malls. Not long ago, young people liked to go to B1 and B2 floors when shopping and became popular. In shopping centers of all sizes in the city, the foot traffic of underground shops is higher and business is more prosperous. Why are young people eager to go to the B1 and B2 floors when shopping? This is because young people nowadays have a more rational and pragmatic consumption concept. They are no longer easily tempted by advertising and brand halo, but pay more attention to experience, pursue cost-effectiveness, and are willing to pay for emotional value. With the rapid development of e-commerce shopping, the attractiveness of offline physical shopping malls in shopping has declined. At the same time, the leisure, entertainment, parenting and other functions of shopping malls have become increasingly prominent, and restaurants, cinemas, amusement parks, etc. have become the main force for large commercial complexes to attract passenger flow. The popularity of the underground floors of shopping malls with stronger fireworks and a more vibrant lifestyle is partly due to this. Compared to other floors, the business formats on the B1 and B2 floors of shopping malls are often more diverse, with more popular and emerging brands. Whether it's affordable food and snacks or fun and interesting handicraft workshops, the consumption of these stores generally has the characteristic of "low unit price and high frequency", allowing young people to have more "no burden on spending a little money" and "happy without spending money" healing feelings. The B1 and B2 floors have convenient location. Many shopping malls have underground floors directly connected to subway stations and parking lots. Consumers can quickly reach floors that meet the needs of eating, drinking, playing, shopping, and entertainment by coming out of subway stations or parking lots. Wherever consumers are, the market is there. The B1 and B2 floors of the shopping mall are becoming increasingly lively, reflecting changes in consumer consumption patterns and providing more innovation opportunities for commercial real estate and settled merchants. In order to cater to the consumption concept of young people, many well-known brands have actively "sunk" to the B1 and B2 levels and made brand strategy adjustments; Many creative brands that focus on youthfulness are also willing to hold fun activities here to attract emerging consumer categories to enter. The two-way rush of consumers and merchants has added vitality to the economy. It is worth noting that with the continuous high passenger flow on the B1 and B2 floors of the shopping mall, problems such as rising rent and difficulty in finding a single store have also emerged. How to seize the opportunity to create a better consumer experience and create more consumer hotspots tests the ability and level of shopping malls and brands. The consumption leadership of young people plays a significant role in driving demonstration, and shopping malls still need to constantly innovate, optimize the supply of goods and services, adjust spatial layout, and better turn popularity flow into "retention". For example, shopping malls can change traditional spatial layout, enhance connectivity among major areas, and use open and bright space design to enhance consumer experience. At the end of the day, which floor the passenger flow to is just a change in location. What consumers truly need are more interesting and cost-effective products, as well as better and more thoughtful service experiences. Only by meeting these needs, whether it is in the mall or the brand, can sustainable development be achieved. (Lai Xin She)