Group 1 - The core event of the day was the women's 400m freestyle final, where Chinese swimmer Li Bingjie set a new Asian record and won a silver medal with a time of 3:58.21, defeating her American rival Katie Ledecky, who finished with a time of 3:58.49 [1][2] - The gold medal was claimed by Canadian swimmer Summer McIntosh, who achieved a time of 3:56.26, marking her as a rising star in the swimming world [1][2] - Li Bingjie expressed her surprise and excitement at surpassing Ledecky, emphasizing the significance of this victory for her [2] Group 2 - Young Chinese swimmer Yu Zidi, aged 12, successfully advanced to the finals of the women's 200m individual medley, finishing the semifinals with a time of 2:10.22, placing seventh [2][5] - Yu Zidi expressed her happiness about reaching the finals and her determination to continue improving [5] - In the men's 4x100m freestyle relay, the Chinese team finished fifth with a time of 3:11.15, while the Australian team won gold with a time of 3:08.97 [5][6] Group 3 - In the women's 4x100m freestyle relay, the Chinese team finished fourth with a time of 3:34.17, narrowly missing a medal as they were overtaken by the Netherlands in the final moments [6] - The Australian team won the event with a time of 3:30.60, while the USA and Netherlands secured silver and bronze respectively [6] - The men's 400m freestyle final saw German swimmer Mertens take gold with a time of 3:42.35, while Chinese swimmer Zhang Zhanshuo finished fifth with a time of 3:44.82 [6]

Group 1 - The core viewpoint of the articles highlights the impressive performance and potential of 12-year-old Chinese swimmer Yu Zidi, who has advanced to the finals of the women's 200m individual medley at the 2025 Singapore Swimming Championships [1][2]. - Yu Zidi achieved a time of 2 minutes 11.90 seconds in the preliminary round and improved to 2 minutes 10.22 seconds in the semifinals, securing her place in the finals [1]. - The articles emphasize Yu Zidi's balanced skills across all four swimming strokes, making her a strong contender in both the women's 200m and 400m individual medley events [2]. Group 2 - Yu Zidi began her swimming journey at the age of 6 and faced challenges, including a moment of considering quitting due to pressure in 2024, but was inspired by her predecessor Ye Shiwen [2]. - In addition to the 200m individual medley final, Yu Zidi is set to compete in the women's 200m butterfly preliminaries on July 30 and the women's 400m individual medley preliminaries on August 3, facing tough competition [2]. - The articles convey Yu Zidi's awareness of the intense competition at the world-class level and her determination to perform her best despite the pressure [2].