If every ball scores, the winner will have the right to serve. Get odd points and serve from the left area; Double the score and serve from the right area.
3. If the service rights are exchanged, none of the four players will exchange positions. According to the odd and even scores of the opponent, the players in the left or right area of the opponent serve.
4. If the right to serve is not exchanged, the server will exchange positions, and the receiver will not exchange positions, but the original server will still serve.
In the game, it is a foul for the same player to swing the ball twice in a row and two players on the same side to hit the ball once in a row.
6. The rules of the court are the same as the old system. The back serve line of doubles is the line before the baseline, and the sideline and baseline are the perimeter lines of the court.
7. Other rules are the same.