This year's Asian Games has a total 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? Which ball players can choose their own balls? With the help of high-speed cameras, let's learn the cold knowledge of ball games at the Asian Games.

What is the relationship between vine balls and "vines"?

One of the characteristics of the Asian Games is that it will integrate into the non-Olympic sports popular among Asian ethnic groups. Vine ball, for example, is a sport that has been popular in Southeast Asia for hundreds of years. As a niche ball category, the rattan ball competition is expected to produce 6 gold medals. So, why is there a rattan character in the name of the vine ball? What are its features? And when did you take the Asian Games?

Rattan ball is an ancient and unique sport that originated in Southeast Asia. Originally a show sport, in the 60s, with the introduction of nets and the establishment of scoring rules, rattan ball became competitive and became an official local sport. In 1982, at the 9th Asian Games held in New Delhi, rattan ball was unveiled as a performance event. In 1990, at the 11th Asian Games held in Beijing, rattan ball became an official competition.

Yuan Hua, deputy commander of the rattan ball project competition of the venue group operation team of Jinhua Sports Center: The rattan ball was indeed woven by vine at the beginning, and later in order to use it in official competitions, the International Rattan Federation and the Asian Vine Federation standardized its size, size and material, so that the equipment can meet its technical characteristics and ensure the tradition of the rattan ball. Now our standard rattan balls are made of plastic skeleton. The biggest difference between it and volleyball and football is that it is not inflated, its interior is hollowed, and the elasticity comes from the elasticity woven by its own plastic structure.

Why is the rattan ball called "kicked volleyball"?

then How is the vine ball played? What are its rules? It is understood that the rattan ball is called "kicked volleyball", why is this?

The rattan ball is a sport that uses the feet, legs, shoulders, head, etc. to control the ball. The rattan ball game has the characteristics of landing score, similar to volleyball, except that the foot is substituted for the hand, so it is also called "kicked volleyball". At the same time, rattan ball also integrates the technical characteristics of football, shuttleball and other sports.

Because the game is mainly scored by foot movements, high-level athletes often use some difficult movements to improve the speed of hitting and achieve smash scores.

Yuan Hua, deputy commander of the rattan ball competition of the venue group operation team of Jinhua Sports Center: Using your feet to dunk the ball on the opponent's field at this height requires great skill and good bouncing ability. Actions such as breaking, straddling, semi-turning, and turning are very physically consuming, so an excellent rattan ball main attack, if a ball really plays two or three rounds, he needs to deduct fifty or sixty times, that is, do fifty or sixty flips.

Which ball game is faster than high-speed rail?

So, in the ball sports of the Asian Games, do you know which ball has the fastest ball speed? There is a ball that has a fastest ball speed even faster than a high-speed rail, have you guessed what?

According to public data from the official Guinness World Records website, the fastest hitting speed of badminton reached 565 kilometers per hour, which was achieved by an Indian athlete in a test in April this year. The maximum speed of badminton hitting measured during the official competition also reached 4 kilometers per hour.

Badminton player Wang Lin: At present, the fastest ball speed in the competition is the Danish player, which reached 426 kilometers per hour. At present, the domestic high-speed rail can generally reach more than 300 kilometers per hour, and our badminton players can run faster than the high-speed rail with a shot to kill the ball.

This speed makes badminton the fastest of the 19 ball sports at the 18th Asian Games in Hangzhou.

Why should badminton competitions have special serving judges?

Badminton has always been one of the most interesting events at the Asian Games, which is expected to produce seven gold medals. I don't know if you have noticed that there is a special referee in badminton - the serving referee. Why do badminton competitions have a separate serving judge?

The main responsibility of the badminton serving referee is to determine whether the athlete has violated the rules when serving.

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

In 2018, the BWF began to implement new serving rules, and the height of the badminton serve was changed from the original not to exceed the waist to not exceed 1.15 meters. And the serving referee also has a more standard judgment tool.

Badminton player Wang Lin: The serving referee passes two boards with parallel lines of 1 meter 15 height, and then passes the two boards perpendicularly, and when the two straight lines are combined into a straight line, this is a 1.15 meter batting point. The referee looks through this line to see if we exceed the height of 1.15 meters at the moment of the serve.

How does table tennis achieve the fluttering rotation of table tennis?

After talking about badminton, let's talk about another sport that everyone is very familiar with - table tennis. The best thing about table tennis games is the trajectory of the ball Table tennis spinning, unpredictable, how is this achieved, and the athletes on both sides choose their own game balls before the game, and why?

In 1964, the ITTF made clear that before the competition, athletes from both sides need to select three match balls from among the twelve balls that have been selected within a specified five-minute time. If the parties disagree, the referee makes the final decision.

He Haizhu, vice chairman and secretary general of Zhejiang Table Tennis Association: In the same batch of materials, the hardness of the ball is a little different. There is also a rotation, a little different in roundness, which may affect the connection of the opponent's ball or some technical problems.

A high-level table tennis player who can play a spinning ball with a variety of ends. Through the high-speed camera, it was found that when the racket stood to rub the side of the ball, the ping-pong ball would produce a side-spin ball that rotated around its own longitudinal axis. When the racket is flat and rubs down against the bottom of the ball, the ping-pong ball becomes a downspin ball that rotates around its own horizontal axis. In real combat, the angle of rotation is more complicated.

He Haizhu, Vice Chairman and Secretary General of Zhejiang Table Tennis Association: Many balls in the competition sometimes float past, from the bottom side, side spin, racket also has several kinds of rubber, positive rubber, reverse glue, playing style, racket rubber is different, the ball sinking, spinning are different.