The National Games’ swimming events began in Shenzhen on Monday with a highly anticipated clash of generations between Pan Zhanle and Sun Yang – but both were put in the shade by a rising star. Pan and Sun, two of China’s most talked-about swimmers of recent years, earned places in men’s 400 metres freestyle final, but neither mounted a challenge for the podium and it was 18-year-old Zhang Zhanshuo who took gold, in record-breaking fashion. Zhang clocked three minutes and 42.82 seconds to smash...