十多场大型活动举办，在宁过“双节”的游客超2000万人次

Group 1 - The core viewpoint of the articles highlights the extensive security measures and technological innovations implemented by Nanjing police to ensure public safety during the National Day and Mid-Autumn Festival holiday, which saw over 20 million visitors [1][2] - Major tourist attractions in Nanjing, such as Confucius Temple, Sun Yat-sen Mausoleum, and Xuanwu Lake, experienced significant visitor traffic, with various large-scale events like concerts and sports matches contributing to increased security challenges [1] - The establishment of a city-level security command center by Nanjing police aimed to create a comprehensive and effective security network to manage the influx of tourists and ensure orderly conduct during events [1] Group 2 - Advanced technology, including patrol robots and digital police assistants, was utilized to enhance security and provide services to tourists, demonstrating a shift towards smart policing [2] - The digital police assistant "Xiao Yue" provided bilingual support to tourists, answering questions and offering safety information, showcasing the integration of technology in public service [2] - Various technological tools, such as drones and intelligent monitoring systems, were employed to create a multi-layered security framework, effectively addressing the challenges posed by large crowds during the holiday [2]