城市更新里的科技范儿（科技视点）

Urban Renewal and Historical Building Protection - The article discusses the challenges and innovations in urban renewal, focusing on the balance between space development and the preservation of historical buildings [1][4] - In Shanghai, the innovative "stepping walking" technology allows for the safe relocation of historical buildings, such as the 90-year-old Huayanli building, without damage [2][3] - The technology enhances safety margins, increases construction efficiency, and reduces costs compared to traditional methods [2][3] Technological Applications in Historical Preservation - The use of 3D scanning and drone photography provides precise data for the restoration of ancient buildings, ensuring scientific and accurate progress in preservation efforts [4] - In Lhasa's Barkhor Ancient City, over 1,300 buildings are preserved while integrating modern amenities, showcasing a blend of tradition and contemporary living [4][5] Safety Measures in Urban Infrastructure - In Hefei, the installation of gas leak alarms in commercial establishments enhances safety by automatically shutting off gas valves and notifying owners in case of leaks [6][7] - The Hefei city infrastructure safety project aims to address urban safety needs through a comprehensive monitoring network, utilizing advanced technologies for disaster prediction and response [7][8]