Is the ball speed too fast or too high? How much do you know about these ball games at the Asian Games?

The competition events of this Asian Games consist of 40 major events, 61 sub events, and 481 sub events, of which 18 major events are ball games. What are the unpopular ball games at the Asian Games? On the field, what ball moves faster than high-speed rail? What kind of ball games can players choose their own balls? With the help of high-speed cameras, let's learn about the cool knowledge of ball games at the Asian Games together.

What is the relationship between Tengqiu and "Teng"?

One characteristic of the major events set up at the Asian Games is the integration of non Olympic events popular among Asian ethnic groups. For example, Tengqiu is a sport that has been popular in Southeast Asia for hundreds of years. As a niche sport, the Tengqiu competition is expected to produce 6 gold medals. So, why is there a vine character in the name of Tengqiu? What are its characteristics? When did it take to the Asian Games?

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Tengqiu is an ancient and unique sport that originated in Southeast Asia. Initially, it was a performance event. In the 1960s, with the establishment of the use of tennis nets and scoring rules, wicker ball became competitive and became an official local sport. In 1982, Tengqiu made its debut as a performance event at the 9th Asian Games held in New Delhi. In 1990, at the 11th Asian Games held in Beijing, Tengqiu became an official competition event.

Yuan Hua, Deputy Commander of the Tengqiu Project Competition of the Jinhua Sports Center Venue Cluster Operations Team: Tengqiu was originally made of vines. Later, in order to be used in official competitions, the International Tengqiu Federation and the Asian Tengqiu Federation standardized its size, size, and material to ensure that the equipment meets its technical characteristics while ensuring the traditional nature of Tengqiu. Our standard rattan balls are now woven with plastic as the skeleton. The biggest difference between it and volleyball and football is that it does not inflate itself. Its interior is hollow, and its elasticity comes from the elasticity woven from its own plastic structure.

Why is Tengqiu called "kicking volleyball"?

So how does Tengqiu compete? What are its rules? It is understood that Tengqiu is called "kicking volleyball", and why is this?

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Tengqiu is a sport that uses the feet, legs, shoulders, head, and other parts to control the ball. Tengqiu competition has the characteristic of scoring on the ground, similar to volleyball, but with the difference of using feet instead of hands, so it is also known as "kicking volleyball". At the same time, Tengqiu also integrates the technical characteristics of sports such as football and shuttlecock.

Because the main way to score in a game is through foot movements, high-level athletes often use some difficult movements to improve their hitting speed and achieve spike points.

Yuan Hua, Deputy Commander of the Tengqiu Project Competition of the Jinhua Sports Center Venue Cluster Operations Team, said that using feet to dunk the ball to the opponent's field at this height requires superb skills and good jumping ability. Actions such as spin, cross, half turn, and spin are very energy intensive, so an excellent wicker pitcher needs to deduct fifty or sixty times in a game if he really plays two or three innings, which means doing fifty or sixty somersaults.

Which type of ball has the fastest ball speed than high-speed rail?

So, do you know which ball has the fastest speed in the ball sports of the Asian Games? There is a type of ball whose fastest speed is even faster than high-speed trains. Can you guess what it is?

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According to public data from the official website of Guinness World Records, the fastest hitting speed of badminton reached 565 kilometers per hour, which was achieved by an Indian athlete in a test conducted in April this year. During the official competition, the maximum speed of badminton hitting also reached 426 kilometers per hour.

Badminton player Wang Lin: Currently, the Danish player has created the fastest ball speed in the competition, reaching 426 kilometers per hour. At present, domestic high-speed trains can generally reach over 300 kilometers per hour. Our badminton players can run faster than high-speed trains with just one shot.

This speed made badminton the fastest among the 18 ball games at the 19th Asian Games in Hangzhou.

Why does a badminton game require a dedicated serving referee?

Badminton has always been one of the most eye-catching events at the Asian Games, with an estimated 7 gold medals to be won at this year's Asian Games. I don't know if anyone has noticed that there is a special referee in badminton matches - the serving referee. Why does a badminton game require a separate serving referee?

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The main responsibility of a badminton serve referee is to determine whether the player violated the rules during the serve.

Badminton player Wang Lin: Because the serve in badminton is actually a form of defense, if I hold it too high, or even say I can lift it above my head, my serve may be an attack.

In 2018, the Badminton World Federation began implementing new regulations for serving badminton, which changed the serving height from the original limit of no waist height to no more than 1.15 meters. And the serving referee also has more standardized judgment tools.

Badminton player Wang Lin: The serving referee passes through two boards with parallel lines at a height of 1.15 meters, and then they are perpendicular to each other. When the two lines recombine into a straight line, this is a hitting point of 1.15 meters. The referee uses this line to see if we exceed a height of 1.15 meters at the moment of serving and hitting the ball.

How to achieve the graceful rotation of table tennis?

After talking about badminton, let's talk about another sport that everyone is very familiar with - table tennis. The best aspect of table tennis competition is the trajectory of the ball, the graceful and unpredictable rotation of the table tennis table. How is this achieved, and why do athletes from both sides choose their own balls for the competition before the competition?

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In 1964, the International Table Tennis Federation made clear regulations that before a match, athletes from both sides were required to select three match balls from among the twelve balls that had already been selected within a specified five minute period. If there is disagreement between the two parties, the final decision shall be made by the presiding judge.

He Haizhu, Vice Chairman and Secretary General of Zhejiang Table Tennis Association: Among the same batch of materials, the hardness of the balls is slightly different. There is also a rotation, there is a slight difference in roundness, which may affect the connection of the opponent's ball or some technical issues.

A high-level table tennis player can play a variety of spinning balls. Through high-speed cameras, it was found that when the racket stands up to rub against the side of the ball, the ping pong ball produces a spin ball that rotates around its own vertical axis. When the racket rubs down against the bottom of the ball, the ping pong ball becomes a spin ball that rotates around its own horizontal axis. In actual combat, the rotation angle will be more complex.

Vice Chairman and Secretary General of Zhejiang Provincial Table Tennis Association, He Haizhu: Many balls in competitions sometimes float over, passing from the bottom to the side, spinning sideways. There are also several types of rubber for the racket, front glue and back glue. The playing style and rubber for the racket are different, and the ball sinks and spins upwards.