What are the defense rules of Latin dance competition?

12 teams draw lots to decide the order of appearance, and 1 team comes out first and automatically becomes the defending champion. After the performance is completed, the next team to appear automatically becomes the attacking party. After the performance is completed, the three judges will put up signs to vote for the corresponding party, and the winners who have won two or more votes will continue to keep the papers (that is, for the successful attack or the failure to keep the papers), and so on, and finally come out to finish the performance and judge the teams that have voted.