olympic games. how do they do it? abc's jeffrey kofman finds out. ♪ >> reporter: it's beginning to sound look a broken record at these olympics. chinese anthem blasts out again. and again. and again. as its athletes ascend the podium. the cold war is over, but the u.s. and china are locked in an olympic gold war. while the u.s. medal haul has been consistent in recent years, chins has rocketed. from five golds in 1988 to 51 in 2008. how do they do it? this week, abc's gloria riviera in beijing visited one of the thousands of sports schools where future chinese olympians are already being groomed. this headmaster told abc news the secret to china's success. young athletes who train hard and can endure hardship. hardship. look at the face of this girl as a coach stands on her legs. but the secret to china's medal success isn't just early and relentless training.