Core Insights - Zhang Fan, former Vice President of Tencent Maps, has left to establish a new company named "Yuntu Zhixing" focused on AI technology innovation in geographic information and spatial intelligence computing [2][3]. Group 1: Company Overview - Yuntu Zhixing has quickly assembled a team and secured angel round financing in the range of tens of millions of USD, with investors including IDG Capital, Inno Angel Fund, and others [2]. - The company aims to develop vertical AI large model engines to provide global software and data solutions for Chinese enterprises looking to expand internationally [2]. Group 2: Industry Background - Zhang Fan has nearly 20 years of experience in the geographic information industry, having previously managed teams of over a thousand people at Gaode Map and Tencent Map [3].

Core Insights - The rapid digital transformation of cities has increased the demand for spatial-temporal information represented by realistic 3D models [2][3] - A new book titled "Realistic 3D City Construction and Application Practices," edited by Zhang Zhihua and Professor Zhu Qing, has been published to provide practical guidance for 3D city construction in China [3] Group 1: Book Overview - The book reflects major achievements and experiences in China's realistic 3D city construction, covering policy standards, foundational research, technology development, and application scenarios [3] - It systematically summarizes 16 typical cities/regions' successful cases and practices in realistic 3D city construction and application, addressing fields such as natural resource management, urban emergency response, and smart cultural tourism [3] Group 2: Collaborative Efforts - The publication is a collaborative effort involving 23 organizations, including the Qingdao Surveying and Mapping Research Institute and various universities and research centers, gathering insights from over 40 industry experts [3] - The book aims to serve as a bridge connecting policymakers, technology service providers, and application demanders, making it a valuable resource for management personnel, engineering technicians, researchers, and students in related fields [3]