This case is an on-site construction photo of our foldable container houses for a mountain project in the Dominican Republic. Located amid rolling mountain terrain, the cabin is fitted with an extended shaded corridor and guardrails, combining practicality and safety. It is suitable for site offices and worker dormitories. Adopting a modular foldable structure with main components prefabricated in the factory, on-site construction is convenient. No extensive earthwork is needed, and the cabin can be quickly assembled and put into service. The wall panels feature excellent rain and UV resistance to adapt to changeable mountain weather and withstand heavy downpours and intense sunlight. When folded, the cabin is compact for inland transportation and effectively cuts logistics costs. Water and electrical pipelines are pre-embedded inside, so it is ready for use once connected after installation. It can be used for construction dormitories, mountain field camps and temporary command posts for infrastructure projects in the Dominican Republic. Multiple units can be joined together, disassembled, relocated and reused. Jinzhong offers customized structural reinforcement and rainproof configurations adapted to mountain conditions, with one-stop manufacturing and on-site installation guidance. It is a reliable prefab temporary building solution for mountainous areas in the Caribbean.