Age may be just a number, but for two of China’s most senior track and field athletes, the numbers they have produced on the global stage have been nothing short of astonishing. At the World Masters Athletics Championships, 92-year-old Lyu Mingpu captured four medals across six events, including two golds, and immediately set a new goal to keep running until he is 100. Similarly, 82-year-old Ding Ming shaved a massive 0.52 seconds off the Asian M80 80-metre hurdles record to win a world...