Two wins in three games, first toss a coin to "pick the side" winner, first choose the venue (one side of the venue), and exchange venues in the second game. If both sides win their own games, a tie breaker will be held, but a tie breaker needs to be re-selected.
Each team played twice, and the winner was the champion. If there are three teams with one draw and one loss, it depends on who wins the most net and who ranks first. If the net wins are the same, we can play another game to decide the result. If the two teams win the same game, let's look at the relationship between the winners and losers in the round robin, and the winner ranks first.
If there are continuous problems, you need to rest 10 minutes.