There are many theories about the origin of table tennis, and the most popular theory is that table tennis originated in England at the end of the 19th century and was derived from tennis. It is said that one day at the end of the 19th century, London encountered a rare sweltering heat. After watching the Wimbledon tennis match, two young British upper-class aristocrats went to a private room in a fine restaurant for dinner. First, they used the wooden cigar box lid as a fan, then discussed tennis skills and tactics, picked up the champagne cork cork as a ball, used the large dining table as a table, stretched a thin rope in the middle as a net, and used the cigarette box lid as a racket to play ball. . The waiter cheered on the side, and the female shopkeeper who came over after hearing the sound couldn't help but blurted out "Table Tennis", which named table tennis "table tennis". Initially, table tennis was just a palace game, and its name was not table tennis, but "Flim-Flam", also known as "Goossime". Later, an American named Hayat invented a toy hollow ball called "celluloid". Around 1890, when the Englishman James Gibb traveled to the United States, he saw a toy ball made of celluloid and brought it back to England to replace the original solid ball. At that time, the racket had a long handle, parchment paper on both sides, and a hollow center. When using this racket to hit the celluloid ball, it made a "ping" sound and when it fell off the table, it made a "pong" sound. From this, the name table tennis was born. . This toy ball is called ping pong. It started in Europe, the United States, and then spread throughout Asia. A British sporting goods company first used the word "Ping-Pong" as its advertising name and registered it as a trademark. In 1891, the Englishman Charles Baxter applied for a license for table tennis as a commercial patent. The International Table Tennis Federation is a consortium of table tennis organizations (referred to as associations) that participate in the ITTF. The ITTF currently has more than 200 association members, making table tennis one of the three most popular sports in the world. Its abbreviation is: ITTF, English: International Table Tennis Federation, abbreviation: ITTF . It was founded in London, England, in December 1926. Its headquarters was originally located in Hastings, East Sussex, England. It moved to Lausanne, Switzerland in 2000. On December 12, 1926, the first historic International Table Tennis Federation Congress was held in the library of Ms. Swaythling, the mother of Ivo?6?1 Montague, in London, England. At the meeting, the ITTF constitution and competition rules were formally adopted. Because it was discovered that the word "Ping-Pong" was a commercially registered name, the ITTF was renamed the "Table Tennis" Association, a name that has been used to this day. Before the 1920s, table tennis remained in the game stage. Invitational tournaments began to be held after the 1920s. The 1st World Table Tennis Championships were held from December 6th to 11th, 1926 at the Maimore Hall, Fullerton Street, London. The competition consists of five events: men's team, men's singles, women's singles, men's doubles and mixed doubles. In addition, there will be a men's singles consolation match. Since the total number of female athletes participating was only 16, there were no women's team or women's doubles competitions.