Core Viewpoint - The 15th National Games, jointly hosted by Guangdong, Hong Kong, and Macau, marks a significant innovation in sports event organization, showcasing a collaborative spirit and cultural integration among the three regions [13][14][24]. Group 1: Event Overview - The National Games will feature 12 competitive events in Shenzhen, including swimming and cycling, creating a vibrant atmosphere throughout the city [3]. - Hong Kong will host events such as cycling, fencing, and golf, along with community bowling activities, highlighting its first-time involvement in a national-level sports event [5][7]. - Macau is also participating for the first time, with volleyball events already underway at the East Asian Games Sports Centre, generating excitement among local residents [9][12]. Group 2: Innovations in Hosting - This edition of the National Games is the first to be co-hosted by Guangdong, Hong Kong, and Macau, representing a novel approach in the history of the event and a practical application of the "One Country, Two Systems" policy in sports [14]. - The event features cross-border competitions, allowing athletes to experience seamless passage through the Hong Kong-Zhuhai-Macao Bridge, utilizing advanced technology for a smooth transition [16]. Group 3: Community Engagement and Sustainability - The Games aim to reduce the emphasis on medal counts by not disclosing rankings, promoting broader community participation with an increase to 166 events, significantly more than previous editions [18]. - Over 90% of the competition venues are existing facilities, marking the first time no new large venues are constructed, which helps lower costs and reduce carbon emissions by approximately 160,000 tons [20][24]. Group 4: Cultural Integration - The torch relay and medal design reflect the cultural symbols of the three regions, emphasizing their interconnectedness and shared identity [22]. - Traditional cultural elements such as dragon and lion dances have been incorporated into the community events, showcasing the rich heritage of the Greater Bay Area [22].

Core Viewpoint - The 15th National Games is characterized by significant innovations, including joint hosting by Guangdong, Hong Kong, and Macau, the introduction of cross-border events, and a focus on sustainability and cultural integration [1][4][9]. Group 1: Hosting Model Innovation - The event is jointly hosted by Guangdong, Hong Kong, and Macau, marking a historical innovation in the National Games' hosting practices and exemplifying the "One Country, Two Systems" principle in sports [4]. Group 2: Cross-Border Event Innovation - The introduction of cross-border events allows athletes to experience seamless passage through the Hong Kong-Zhuhai-Macao Bridge during competitions, utilizing technologies like facial recognition for a "no-stop" crossing experience [5]. Group 3: Reform and Inclusivity - The Games continue previous reforms by not disclosing medal counts, thereby reducing the emphasis on "gold medalism," and expanding participation opportunities across all age groups with 23 major events and 166 minor events [8]. Group 4: Sustainability in Hosting - For the first time, the Games will not involve the construction of new large venues, with over 90% of competition venues being upgraded from existing facilities, significantly lowering hosting costs. The estimated green electricity usage will exceed 188 million kilowatt-hours, reducing carbon emissions by approximately 160,000 tons [9]. Group 5: Cultural Integration - The torch relay and medal design reflect the cultural symbols of the three regions, and traditional activities like dragon and lion dances are included in the competition, enhancing the cultural representation of the Greater Bay Area [12].