China's Shi Tingmao and Wu Minxia dive during the women's synchronized 3m springboard final at the Aquatics World Championships in Kazan, Russia, July 25, 2015. [Photo by Hannibal Hanschke/Reuters]

Wu's former partner Guo Jingjing holds the record as Guo was 27 years and 282 days old when she grabbed gold in 2009. Wu also is the youngest world champion ever in this event. In 2001, she was 15 years and 258 days old when she claimed her first ever gold medal in women's synchro 3m.