The 15th National Games and the Special Olympics for the Disabled have officially come to an end. What is impressive is not only the hard work and enthusiasm of the athletes on the field, but also the new style and atmosphere of exploring deep integration and development in the Guangdong Hong Kong Macao Greater Bay Area. These have injected surging momentum into regional coordinated development. For example, a large number of venues have been renovated and upgraded, the "ticket economy" has leveraged the consumption chain, the customs clearance convenience of "ports as tracks", and the collaborative governance of the three regions in sports, culture, and other fields... These valuable post event resources are worth fully utilizing and effectively transforming, turning the legacy of the event into urban assets. Looking at some major events, post event resource utilization often becomes a rare opportunity for urban development to leap forward. For example, after the successful hosting of the Beijing Winter Olympics, fully developing the heritage resources of the event, enhancing public service capabilities, and organically integrating them with industries such as culture, tourism, and accommodation have become new engines for promoting regional economic development. After the Hangzhou Asian Games, some iconic venues have achieved transformation through the integration of competition and performance and public opening, providing reference cases for the sustainable utilization of event resources. For the Guangdong Hong Kong Macao Greater Bay Area, the venue facilities, collaborative mechanisms, brand effects and other legacy left by this grand event are also important levers for accelerating regional integration and continuously improving international competitiveness. Sports events naturally have unique functions of breaking through geographical limitations, gathering domestic and foreign resources, and shaping urban brands. The efficient coordination mechanism and seamless connection ability established by the three regions in this event fully verified their comprehensive strength in event organization, resource integration, collaborative governance, and other aspects. The "Guangzhou Sports Strong City Construction Plan (2024-2035)" has clearly proposed to "fully leverage the experience and international resources of Guangdong, Hong Kong, and Macao in organizing competitions" and "promote joint bidding for the World Cup and the World Comprehensive Games". Based on this, the three regions can systematically plan to introduce high-level professional leagues such as football, basketball, and tennis, compete for more international A-level events, and form a unique Bay Area brand in the global sports map through the agglomeration effect of event resources, promoting the Greater Bay Area to leap from a regional event hosting center to an international sports center with global appeal. The legacy of the grand event is also to explore feasible paths for regional collaborative governance through the empowerment of technology. For example, during the Paralympic Games, the exclusive "facial recognition" channel combined with the "group in and group out" mode allowed athletes to smoothly "enter the port", and the barrier free electronic map achieved full coverage of Macau. With the support of dedicated links and encryption technology, command instructions between the three places reached a secure and stable millisecond transmission standard. At present, the Guangdong Hong Kong Macao Greater Bay Area is promoting the construction of a "digital bay area". If the above-mentioned intelligent technologies can be extended to cross-border commuting, logistics, industrial cooperation and other fields, and the coordination mechanism of the three regions can be institutionalized from the experience of the competition, it can provide reference for urban development and other fields, promote the extension of "hard connectivity" from the track to industrial belts and living circles, and inject new momentum into regional integration development. Further deepening regional collaborative governance requires strong technical and institutional support, as well as solid support from facilities and space. As the most visible and accessible part of the event heritage, the sustainable use of venue facilities directly affects whether the event results can truly benefit people's livelihoods. During the competition, over 90% of the venues were upgraded and renovated on the basis of existing facilities, which is a vivid practice of sustainable development: sports venues are no longer temporary spaces built for the competition, but permanent public assets returned to the people. For example, Tianhe Sports Center will transform enclosed spaces into shared spaces for all ages, achieving seamless connection between park roads and subway entrances and exits, and integrating sports facilities into the daily lives of citizens; Multiple venues' surrounding blocks are connected to traffic nodes through slow traffic flow optimization, and new functions such as fitness and leisure are implanted in old facilities, exploring an organic integration path of urban renewal between competition areas and blocks. After the competition, these upgraded venues should accelerate their opening to the society and deeply integrate into the community fitness service system, becoming a composite public space that carries the health of the whole nation, stimulates community vitality, and continues cultural memory, allowing the legacy of the event to continue to release its value in daily urban life. During the event, the "One Journey, Multiple Stations" National Games themed tour connects three city landmarks, specialty foods, and cultural experience points, forming a fusion model of "the competition venue is the scenic spot, and watching the competition is the tourism". Data shows that in the first three quarters of this year, the retail sales of sports and entertainment products by units above designated size in Guangdong increased by 32.2% year-on-year, reflecting the huge potential of the sports consumption market. The full release of this potential relies on the unique advantages of the Guangdong Hong Kong Macao Greater Bay Area in the integration of culture, sports, and tourism: the three regions share the Lingnan cultural genes and have their own characteristics, which is conducive to forming a natural industrial synergy foundation. Based on this advantage, we will continue to deepen the integration of cultural, sports, and tourism consumption scenarios, promote diversified industry collaboration through sports, improve urban quality, and enhance cultural identity. It is expected that the Greater Bay Area will become a new sample of cultural, sports, and tourism integration development with typical characteristics. The tangible assets and intangible experience left by the competition are being transformed into lasting momentum to promote high-quality regional development. In the future, the three regions should cherish their precious sports heritage, enhance their global influence through joint bidding for international events, deepen institutional innovation through smart collaborative governance, enhance people's well-being through venue utilization, and unleash market vitality through industrial integration and development. When the legacy of the event is integrated into the urban fabric, the Greater Bay Area will surely move towards a world-class urban agglomeration with more solid steps. (New Society)