China’s Yu Zidi, 12, wins relay bronze at world swimming championships

• Yu Zidi earns bronze in 4x200m freestyle prelims

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Chinese 12-year-old Yu Zidi has won a bronze medal at the swim world championships, an astounding feat for a girl who would be a sixth- or seventh-grade student depending on the school system.

Yu earned the medal by swimming in the prelims of China's 4x200-meter freestyle relay team. She did not swim in the final on Thursday - China placed third behind winning Australia and the United States - but gets a bronze medal as a team member.