U17 U19 U21 football could see what the World Series

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for example is an Asian team bar! U17 is a small tournament to participate in Asia have achieved the top four, they can participate in the World Cup less (the other can get tickets for a World Youth Championship); U19 participating Yaqing Sai, sub-less pre 4) to participate in World Youth Championship; U21 basically the Olympic team, and to participate in qualifying, the former four Olympics. Similar to other continents, and so on, depending on local continent full league system prevail

U-17 World Youth Soccer Championship

U-19 World Youth Soccer Championship

U-21 World Youth Soccer Championship