Advertising media operation covers a wide range of areas, including buildings, communities, airports, railway stations, shopping malls, supermarkets, campuses, business halls and other public gathering places of many industries in different provinces and cities, and the hardware equipment, installation space, wiring situation and business hours of each place are not consistent. In such a complex application scenario, to ensure the timely and efficient release of content and information, and the release of content and broadcast time for centralized management and hierarchical partition control, is undoubtedly inseparable from a set of flexible and efficient media playback solutions