Portable Expandable Rooms can be used as sunrooms, paint booths, shading canopies, and barbecue areas. Portable Expandable Rooms refer to structures that utilize professional design, materials, and production techniques to integrate rooms, kitchens, bathrooms, balconies, and other functions into a single unit, offering features such as mobility, foldability, joinability, and free combination. The basic concept of portable expandable rooms is to combine rooms, kitchens, bathrooms, balconies, and other functions into one using professional design, materials, and production techniques, providing advantages like mobility, foldability, joinability, and free combination. The integrated design is foldable, joinable, and freely combinable, allowing for flexible assembly based on the size of the space, which is very convenient.