Objectively speaking, coach Cai began to engage in football training from 1997, and began to provide free football training for children. He didn't make money; The competitors of the cross-country football club fell down one by one and rose again, and I don't know how many times they circulated. Cai's money has long been ruined. Cross-country football club started from the hockey field at the east gate of the Olympic Sports Center, and has now been changed to the football training ground at the east gate of the Olympic Sports Center. At first, the training ground was difficult in the hockey field. (This is a video recorded while playing football in the hockey field:/v _ show/ID _ xmtu3odg1mdg =. Html) Teach children 10 hours every day, and keep kicking on hard ground. Now coach Cai has a bad knee and seldom plays football. This is the contribution of a football player, who has worked for more than ten years without seeking money; No one in Beijing football circle has been doing youth football for so long, and he is not qualified to tell him what to do; Cai, are you doing well? At least you did it.