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 Zidi, a 12-year-old Chinese swimmer, has created history by becoming the youngest-ever medallist at the World Swimming Championships.

China’s Yu Zidi became the youngest ever medalist at the World Aquatics Championships after being part of China’s bronze medal-winning team in the 4x200m freestyle relay.