Core Points - The Ministry of Natural Resources reports that nearly 300 cities in China have completed the construction of 3D building models, which play a significant role in urban renewal, public service, and empowering the digital economy [1][2] Group 1: 3D Modeling and Technology - China has achieved autonomous control over core technologies such as real-world 3D data collection and spatial identity coding, establishing a 3D technology system characterized by intelligent modeling, integrated management, and knowledge-based applications [2][3] - By the end of 2025, the goal is to establish a preliminary version of "Real Scene 3D China," with nearly 300 cities having produced 3D models of buildings [2][3] Group 2: Applications in Urban Management - The implementation of 3D technology in Fuzhou has empowered over 60 fields, particularly in urban management, allowing for comprehensive perception, dynamic monitoring, and intelligent analysis of urban spatial information [4][5] - Fuzhou's smart management platform utilizes real-time 3D maps to provide detailed insights into urban infrastructure, including streetlights and manholes, enhancing operational efficiency [4][5] Group 3: Water Management and Emergency Response - The integration of 3D models in Fuzhou's water system management allows for real-time monitoring and simulation of water levels, significantly improving flood response times and water quality management [6][7] - The scientific scheduling system for water management has led to an 88% peak flood reduction rate and a 50% decrease in average drainage response time, achieving a 98% compliance rate for river water quality [7]