The project starts with the goal of creating space habitats from pre-existing structures, specifically envisioning how to transform a starship into reusable lunar habitats. Taking SpaceX's Starship HLS as a reference, after it lands on the moon, it will be carefully tipped onto the surface using precise thruster controls. Autonomous construction vehicles will prepare the terrain beforehand by excavating and piling up the lunar regolith, significantly reducing the impact on the surface. The excavated regolith will then be used to cover the rocket with a layer created by 3D printing technology, shielding it from hazardous radiation and meteor threats in the vacuum environment. Once the liquid fuel in the fuel tank is depleted, the interior space can be smoothly transformed using precast structural frameworks to assemble floors and life-support systems, turning it into a module for research and accommodation. This project tackles the challenge of maximizing the use of existing resources, reducing construction difficulty on site, and establishing a self-sufficient, sustainable lunar dwelling prototype in such an extreme environment.