2. In every game, after every 6-point game, or when changing positions in the deciding game, use a short time to wipe the sweat.

3. A doubles player or a team may request a time-out in a match, and the time shall not exceed 1 minute.

4. In individual events, the suspension is proposed by athletes or designated off-site coaches; In team competitions, it should be proposed by athletes or team leaders.

Basic rules of ball games

1. Whoever scores in a game 1 1 is the winner. If the two sides are tied at 10, then the one who scores 2 points first is the winner.

2. A game consists of an odd number of games. That is to say, it is the best in three games, the best in five games or the best in seven games.

3. The choice of serve and position (that is, the choice of position) before the start of the game is decided by drawing lots.

4. After each score of 2 points, the receiver becomes the server and takes turns to serve. When scoring 10 or taking turns to serve, no one can serve only once.

5. In doubles, the server and receiver are determined in the first game, then the server is received in the next game, and the server who served him in the last game receives the service.

6. In doubles, every time you change your serve, the person who receives the ball in front serves and the partner who serves in front receives the ball.

7. In one game, the person who serves first will accept the service in the next game. In the doubles final, when one side reaches 5 points first, the receiver will exchange the order of receiving the service.

8. After each match, both sides have to exchange places. The deciding game arrived at 5 o'clock and the two sides exchanged places again.