The double-layer aluminum alloy structure tent generally has a span of 10m-40m, and the length can be extended wirelessly. There are various shapes such as herringbone roof, arc roof, and air-film flat roof. In addition to being used as a viewing platform, the double-layer tent can also be installed with glass walls to separate different functional areas. The balcony on the second floor is used as a viewing area, and the interior can be used as a lounge, live broadcast room, restaurant, coffee shop, etc. , supporting air conditioners, carpets, sofas and other soft furnishings, providing a full range of services to the audience.