Yu Zidi, the 13-year-old swimming sensation, will be among a bumper 815 Chinese athletes heading to the Asian Games in Japan this month, state media said Friday. Comprising 36 Olympic champions, the squad has an average age of 24, and over a quarter of the athletes are 20 or under, with most making their Games debuts. Yu, who became the youngest medallist in swimming world championships history last year aged just 12, is part of a team comprising 404 women and 411 men who will compete in 38...