立体展现不动产空间，清晰权利边界

Group 1 - The issuance of the first 3D property certificate in Nanjing marks a significant step in the transition from 2D to 3D property registration, enhancing the clarity of complex spatial structures and rights relationships [1] - Traditional 2D property certificates have limitations in representing underground spaces, multi-level garages, and transit facilities, leading to unclear rights boundaries [1] - The Nanjing Real Estate Registration Center has developed a comprehensive working mechanism for 3D property registration, including surveying, mapping, and rights confirmation [1] Group 2 - The Nanjing Real Estate Registration Center plans to gradually expand the coverage of 3D property registration to include layered natural resources and properties, supporting urban governance modernization [2] - In September, Nanjing and Zhenjiang signed a cooperation agreement for cross-city property registration, introducing nearly 20 inter-city services to streamline processes and reduce costs [2] - The new registration model includes an "online application + local review" mechanism, effectively breaking down regional barriers [2]