Sorry, I don't know the specific reason why Meituan charged the 8800 sign-in fee for the massage service industry. But generally speaking, the platform sign-in fee is usually used to pay the operating cost, brand promotion and technical support of the platform, which can be used to maintain and improve the functions of the platform and provide better service and user experience. In addition, the occupation fee of massage service industry may involve some special considerations, such as the specific cost of the industry and the requirements of laws and regulations. If you have any questions about this charging standard, I suggest you contact Meituan Customer Service for detailed consultation.