Group 1 - The 15th National Games featured a women's individual road cycling race where Hong Kong athlete Li Siying won the championship by a narrow margin of milliseconds after a 138.7-kilometer race [2] - The men's individual road cycling race, which spanned 231.8 kilometers, was notable for being the first cross-border event in the history of the National Games, connecting the Guangdong, Hong Kong, and Macau regions [2] - The race route included significant landmarks such as the Hong Kong Disneyland and the Hong Kong-Zhuhai-Macao Bridge, showcasing the vibrancy of the Greater Bay Area [2] Group 2 - The event faced challenges related to seamless border crossings, with six entries and exits during the race; innovative solutions included the use of access wristbands and embedded chips in race numbers for real-time tracking [3] - The organizing committee implemented advanced technologies such as RFID, facial recognition, and Beidou positioning to ensure zero-delay and contactless border crossings, enhancing the overall experience for participants and spectators [3] - The National Games aimed to promote integration among the Guangdong, Hong Kong, and Macau regions, with over 6,000 participants expected from the mainland and over 3,000 from Hong Kong and Macau, highlighting the benefits of convenient border crossings [3]