Squat chop serve has always been a necessary skill for Ding Ning, and the effect at the critical moment is also quite good. Because this kind of service is really rare on the court, many players who see it for the first time are embarrassed and often lose points unintentionally. However, since it is a unique skill, of course, it cannot be used often. If used frequently, it will be cracked sooner or later. After all, the action of squatting is still obvious. Relative to normal service, you need to guess the path of the ball. As long as the player squats down, he can know the ball diameter she wants to use, and naturally he will judge the ball diameter first. After all, squat serve is rare, and the ball path is strange, so it is not unbreakable.
What's more, this service has always been controversial, and it is easy to cause the referee's penalty. There is an international rule that the pitch height should not be lower than 16cm, that is, 16cm. Ding Ning suffered numerous losses. Squat serve, because it lowers the player's own height. Although the height may be fine, many referees think that Ding Ning's height is due to his squat body, which makes his hand and ball have a corresponding distance, which is actually unsatisfactory. Therefore, in many competitions, she was punished by the referee for this serve, and the London Olympic Games was even more because of the penalty problem, which led to her mental disorder and directly lost the game.
However, it is not excluded that squatting is a heavy load on the body. With the growth of Ding Ning's age, this movement is no longer suitable for him, so it is used less and less. Of course, we fans don't have to study so much. For us, the game was wonderful, and it was enough that the athletes were not injured.