Core Insights - The "Lingji Zhicheng" large model product was launched in Chongqing, aimed at addressing the challenges of large-scale urban digital twin construction, specifically the issues of high costs and slow construction times [1][3]. Group 1: Product Overview - "Lingji Zhicheng" is developed by Chongqing Design Group over 8 years, integrating nearly a century of architectural data, and utilizes AI-CG dual-modal data fusion recognition technology to intelligently decode engineering drawings [3]. - The product can automatically construct L1-L3 level layered three-dimensional building models, achieving over 1000 times improvement in modeling efficiency and reducing costs by over 80% compared to manual modeling [3]. Group 2: Applications and Benefits - The system enhances urban information space and complex built environment information systems, significantly improving efficiency and quality in urban asset resource management [3]. - It supports various scenarios including public safety, urban construction, urban planning, asset management, public services, and low-altitude economy, showcasing high flexibility and adaptability [4]. Group 3: Fire Safety Integration - "Lingji Zhicheng" enables the construction of a "Fire Information Dispatch" intelligent system that connects smoke detection devices directly to the 119 command center, improving emergency response time by two-thirds [4]. - The system facilitates the management of firefighting operations in high-rise buildings by allowing for quick application of airspace and operational radius, and deploying reconnaissance and firefighting drones [4].