这场体育盛会，“好劲”！

Group 1: Event Overview - The 15th National Games commenced on November 9 in Guangzhou, Guangdong, marking the first time the event is co-hosted by Guangdong, Hong Kong, and Macau [1][5] - The opening ceremony was praised for its creativity and aesthetic appeal, showcasing the cultural and sporting spirit of the Greater Bay Area [5][6] Group 2: Mascot Design and Popularity - The mascots "Xiyangyang" and "Lerongrong," inspired by the Chinese white dolphin, have gained significant popularity among netizens [1][3] - The design team from Guangzhou Academy of Fine Arts, known for creating the Beijing Winter Olympics mascot, emphasized the cultural significance of the dolphin in the region [3] - The mascots have led to a surge in related cultural products, with over 2,800 licensed items developed and more than 700 retail stores opened [4] Group 3: Sustainable Event Management - The event is notable for not constructing new large venues, with over 90% of competition venues being upgraded from existing facilities, significantly reducing costs [7][9] - The use of green electricity during the games is projected to exceed 188 million kilowatt-hours, equating to a reduction of approximately 160,000 tons of carbon emissions [8][9] - The Guangdong Olympic Sports Center underwent significant renovations to meet event requirements while promoting future urban development [8][9]