There are many theories about the origin of table tennis. The most popular one is that table tennis originated in England at the end of 19 and originated from tennis. The International Table Tennis Federation (ITTF) is a federation of table tennis organizations participating in ITTF. The International Table Tennis Federation has more than 200 members, making table tennis one of the three major sports with the largest number of participants in the world. Its abbreviation is the International Table Tennis Federation, and its abbreviation is ITTF. It was founded in 1926 and 12 in London, England. Its original headquarters was in Hastings, East Sussex, England, and it moved to Lausanne, Switzerland in 2000.
service
At the beginning of serving, the ball is naturally placed on the palm of your hand, without clapping your hands, and the palm is open and kept still; When serving, the server must throw the ball up almost vertically with his hands, and must not make the ball rotate, and make the ball rise not less than 16 cm after leaving the palm that does not clap, and the ball must not touch anything before falling and being hit; When the ball falls from the highest point, the server can hit the ball, so that the ball first touches its own table, then crosses or bypasses the net device, and then touches the table of the receiver.
In doubles, the ball should touch the right half of the server and the receiver successively; From the start of serving to hitting the ball, the ball should always be above the table and outside the end line of the server, and it should not be blocked by any part of the body or clothes of the server or its doubles partner; When a player serves, there should be no obstacles in the virtual triangle formed by the connection between the ball and the net post and above a certain height at the moment when the ball touches the racket, and one of the referees should be able to see the player's hitting point clearly.