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 ...

SINGAPORE (AP) — 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 ...

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.

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