Jiao Liuyang, left, who won a gold medal at the London Olympics and a silver medal at the Beijing Olympics in swimming, talks with Jiao Ruoyu (no relation), a former Beijing mayor, in Beijing, Nov 8, 2012. Jiao Liuyang, who was born in 1991, is the youngest delegate to the 18th CPC National Congress, while Jiao Ruoyu, born 1915, is the oldest. [Photo/Xinhua]