Core Insights - The Ministry of Natural Resources of China has reported that nearly 300 cities at the prefecture level and above have completed 3D building modeling, which plays a significant role in urban renewal, public service, and empowering the digital economy [1][5]. Group 1: Technological Advancements - China has achieved self-controlled core technologies such as real-world 3D data collection and spatial identity coding, establishing a technical system characterized by intelligent modeling production, integrated management, and knowledge-based service applications [3]. - The Deputy Director of the Land Surveying and Mapping Division, Liao Anping, stated that by the end of 2025, China aims to initially establish a "3D China," with data elements already systematized and scaled [5]. Group 2: Applications and Future Plans - The 3D reality technology utilizes modern technologies like remote sensing, big data, cloud computing, and intelligent perception to create nearly identical 3D models of real-world scenes, forming a nationwide "one network" for sharing and applying 3D data [7]. - Future plans include leveraging advancements in artificial intelligence, large models, and spatiotemporal computing to further expand the application scenarios of 3D reality technology across various industries [7].

Core Viewpoint - The implementation of 3D modeling technology in urban planning and management is advancing rapidly in China, with nearly 300 cities having completed building models, significantly enhancing urban management and digital economy capabilities [1][3][5]. Group 1: 3D Modeling Technology Development - As of now, nearly 300 cities have completed the production of 3D building models, supporting urban renewal and enhancing the quality of life [1][3]. - By the end of 2025, China aims to establish a comprehensive 3D visualization system, with data elements already organized and scaled [3][7]. - The 3D technology system is characterized by intelligent modeling production, integrated management, and knowledge-based service applications [1][5]. Group 2: Applications in Urban Management - The 3D technology has been integrated into various sectors, including urban planning, disaster prevention, and cultural heritage protection, forming a nationwide data-sharing network [5][19]. - In Fuzhou, the 3D modeling has empowered over 60 fields, particularly enhancing urban management through real-time interaction with city infrastructure [8][10]. - The Fuzhou smart city management platform has created a 3D data foundation covering 188 square kilometers, enabling comprehensive spatial awareness and dynamic monitoring [14][16]. Group 3: Water Management Innovations - Fuzhou has utilized 3D modeling for urban water system management, completing models for 107 rivers and over 30 drainage stations, which aids in flood response and decision-making [19][21]. - The integration of IoT data allows for real-time simulation of flooding scenarios, significantly improving emergency response times during typhoons [23][31]. - The scientific scheduling system for water management has achieved an 88% peak flood reduction rate and a 50% reduction in average drainage response time [31].