Core Viewpoint - The 15th National Games features a historic cross-border cycling event connecting Guangdong, Hong Kong, and Macau, showcasing collaboration and innovation in event management and logistics [1][3][4]. Group 1: Event Overview - The cycling event took place on November 8, covering a distance of 231.8 kilometers, marking the first cross-border event in the history of the National Games [1]. - The event utilized a domestic cross-border seamless customs clearance system, allowing participants to pass through six checkpoints without manual intervention [1]. Group 2: Route Design and Coordination - The route design involved over a year of research and development, resulting in multiple iterations to minimize disruption to daily life while ensuring a smooth event [1]. - Close collaboration among the three regions was essential, with multiple site inspections and optimization of arrangements based on test events [1][3]. Group 3: Meteorological Support - A joint meteorological system was developed to monitor real-time weather conditions, including temperature, wind speed, and humidity, ensuring compliance with event requirements [2]. Group 4: Cross-Border Management Innovations - The event established a new model for cross-border cooperation among immigration management departments, facilitating efficient information sharing and customs processes [3]. - Hong Kong Customs played a significant role in coordinating logistics and emergency drills, gaining valuable experience for future events [3]. Group 5: Future Implications - The successful execution of the cross-border cycling event is seen as a significant step towards deeper integration within the Greater Bay Area, paving the way for future cross-border sports events [4]. - The event serves as a platform for showcasing the potential of collaboration across various sectors, enhancing the "One Country, Two Systems" framework [4].