This system is an efficient and eco-friendly building solution suitable for 4-30-story mid-to-high-rise permanent structures. It utilizes a high-strength steel structural frame combined with precast concrete floor slabs, integrating factory-prefabricated modules such as wall panels, integrated bathrooms, and MEP (mechanical, electrical, and plumbing) systems. It is suitable for various building types, including apartments, student dormitories, hotels, and hospitals, achieving high-quality, low-energy rapid delivery.