Group 1 - The Shanghai women's water polo team won the gold medal at the 15th National Games, marking the first gold medal in the history of Shanghai women's water polo and the last gold medal awarded in this edition of the Games [1][2] - The team has a young average age of around 20 years, with many players still in school or recently graduated, showcasing the potential for future talent in the sport [1][2] - The victory is seen as a significant achievement for Shanghai, as it reflects the city's commitment to developing less popular sports like water polo, which faces challenges such as high venue costs and specialized requirements [1][2] Group 2 - Shanghai has established a relatively complete talent development system for water polo, from youth training programs to school courses and professional team development, contributing to the success of the championship team [2] - The conclusion of this edition of the National Games represents a new starting point for Shanghai sports, particularly in collective sports beyond the traditional "three major ball" games [2]