A foldable, interchangeable structure made for one person. A portable structure that can be achieved by using recycled materials commonly used by a chosen subject or materials such as carbon fibre fabric, as well as a layer of fire-resistant carbon fibre, felt welding blanket, eco-friendly self-adhesive waterproof membrane, vapour control layer, thermal insulation, and hydraulic hinges. Low-cost materials are in mind. with a fabric on land with a city context