Bound to National Fate: I Defend Jiuzhou Against the World

A spatial realm has appeared in the world, opening the way for an unrestricted arena competition. Every country in the world will randomly select one contestant to represent it, with the nation's fate bound to theirs. The competition will be livestreamed worldwide! Contestants can summon historical figures and characters from myths and novels who are known to at least half their countrymen. The winner's rewards will be brought into reality. The losing country's resources, fortune, and even lives will all dwindle… What about forfeiting? [Warning! The consequences of forfeiting are severe!]