Group 1 - The core event is the "Cultural and Tourism Promotion Conference" held in Nanjing, aimed at promoting Xuzhou's cultural and tourism resources while providing benefits to Nanjing citizens [1][2] - The event featured a multimedia presentation showcasing Xuzhou's natural beauty and urban characteristics, with interactive performances that engaged the audience [1] - Various cultural and tourism projects from Xuzhou, such as "Penglai Wind and Elegance" night performances and Ma Ling Mountain, were highlighted, demonstrating the city's rich tourism offerings [1] Group 2 - The promotion is part of Xuzhou's strategy to expand its visitor base from the Yangtze River Delta, offering free admission to 51 scenic spots for Nanjing residents [2] - The Xuzhou cultural tourism department aims to leverage this event to enhance cross-regional cooperation, using culture as a link and tourism as a bridge [2]