Core Viewpoint - The Shanghai team won the gold medal in the women's water polo event at the 15th National Games, which concluded on November 21 [1]. Group 1: Water Polo Overview - Water polo, also known as "water football," is a collective ball game that combines elements of swimming, handball, and volleyball, played in water [2]. - It is one of the earliest team sports in Olympic history, with men's water polo included in the 1900 Paris Olympics and women's water polo in the 2000 Sydney Olympics [2]. - Matches are typically held in a standard 50-meter swimming pool with a depth exceeding 2 meters, and teams consist of 7 players, including one goalkeeper [2]. Group 2: Game Rules and Requirements - Players must not touch the pool walls or bottom during the game and must remain in motion or treading water [2]. - Only the goalkeeper is allowed to use both hands to touch the ball, and a goal is scored when the ball completely crosses the goal line [2]. - After a goal, players return to their half, and the team that conceded the goal restarts play from the center of the pool [2]. - The attacking team has a maximum of 28 seconds to maintain possession before attempting to score [2]. - Water polo demands high levels of strength, speed, endurance, and agility from athletes, alongside swimming skills and specialized techniques such as treading water, jumping, turning, stopping, and changing direction [2].

Core Points - The 15th National Games is a significant sports event that showcases the spirit of perseverance, teamwork, and optimism among Chinese youth [3][4][10] - The event has seen remarkable performances, including multiple world record-breaking achievements in weightlifting and emotional victories in various sports [4][5][9] Group 1: Athletic Achievements - Veteran swimmer Wang Shun from Zhejiang won his 19th gold medal at the National Games, highlighting his long and successful career [4] - Olympic champion Liu Huanhua set a new world record in weightlifting with a total lift of 414 kg, demonstrating resilience in the face of challenges [4] - He Jie from Ningxia won the men's marathon, showcasing his dedication by training with top athletes in Kenya [4] Group 2: Emotional Moments and Sportsmanship - Boxers and divers, including Liu Wei and Cao Yuan, displayed courage and dedication, transcending mere competition [5] - Young athletes like Chen Yuxie, who became the youngest women's 100m champion, expressed gratitude towards veteran competitors, emphasizing the importance of mentorship [8][9] Group 3: Community Engagement and Atmosphere - The event has fostered strong emotional connections among spectators, with local residents actively participating and supporting athletes [10][11] - The first cross-border marathon was held, enhancing community spirit and engagement in the Greater Bay Area [10][11] - The event has also promoted sportsmanship and understanding of the rules among spectators, enriching their viewing experience [11]

Group 1 - The "Swimming Masters" event in Singapore will feature participants aged from 26 to 91, showcasing a wide age range among competitors [1] - The event will take place from July 26 to August 22, with over 6,000 participants competing in various swimming disciplines, making it the largest event that combines elite sports with public participation [1] - Among the 40 participants from the "Swimming God" club, there are 23 male and 17 female athletes, competing in 98 individual events and 11 relay events across 13 age groups [1] Group 2 - Notable participants include 91-year-old Qi Liyun, who broke the men's 100m breaststroke world record in 1956, and 86-year-old Dai Lihua, who set a new world record in the women's 50m breaststroke for ages 85-89 [1] - The event will also feature a "mentor-mentee" dynamic with coaches and former champions, including current Olympic champion Li Bingjie’s father, Li Jian, participating [2] - The "Swimming God" club aims to promote public swimming and has a history that spans multiple generations of athletes, reflecting the development of swimming in China [2]