When serving, neither side shall illegally delay serving;

1.2

Both the server and the receiver must stand in the diagonal service area to serve and receive the service, and their feet must not touch the boundary of the service area; Both feet must touch the ground partially and don't move before serving (rule 1 1.4). [ 1]

1.3

The server's racket must be hit on the bearer first, and the whole ball should be lower than the server's waist.

1.4

At the moment of hitting the ball, the racket shaft should point downward, so that the whole racket head is obviously lower than the whole grip part of the server.

1.5

After the service starts (rule 1 1.2), the server's racket must swing forward continuously until the service is served.

1.6

The serving ball must fly upward over the net. If it is not intercepted, the ball should fall into the service area of the receiver.

2

Once the players of both sides stand in position, the serve begins when the racket head of the server swings forward for the first time.

three

The server can't serve until the receiver is ready. If the receiver has tried to receive the service, it is considered ready.

four

Once the service starts (rule 1 1.2), the service ends when the ball is hit or landed by the server's racket.

five

In doubles competition, there is no restriction on the position of the server or receiver, that is, the server can stand in front of or behind his teammates, but it must not block the line of sight of the other server or receiver.