First of all, it should be clear that the so-called rubbing in table tennis service technology is generally used to catch short balls in the table, and rubbing is generally not considered for long balls. Rubbing the ball is one of the most basic techniques in table tennis. The essentials of rubbing the ball are small movements, quick shots and strong concealment. When receiving the service, we must first judge the rotation and landing point of the ball. If you can't judge the rotation well, you must learn to stare at the ball and judge the landing point of the ball. Then choose to use fast or slow brush to return the ball. The specific technical action of rubbing the ball: wrist adduction (micro-hook), racket face backward. When hitting the ball, the forearm with the elbow joint as the axis exerts force, which drives the wrist to swing back and forth quickly. At the same time, the elbow is extended, the forearm turns slightly inward, and the wrist turns up, which ushered in the later stage of the ball falling, hitting the middle and lower parts of the ball and rubbing the bottom. After hitting the ball, the arm muscles relax, then recover and prepare for the next shot.

The strength of rubbing the ball mainly comes from the forearm, wrist and fingers. The joint efforts of the three can rub out different directions and changes, and the height of the ball must be reduced to control the ball and mobilize the opponent. If you want to practice rubbing the ball well, the key lies in "relaxation". First, wrist relaxation is the core. The wrist should be relaxed to control the ball, the fingers should control the racket type and angle, and the movements of the arms should match the changes of the body's center of gravity. All these require unremitting practice and competition to achieve the desired results. Whether it's backspin or not. Well, if you can judge that the opponent's service is backspin, then handle the ball according to the short backspin method.

Let's talk about the last step first. After all, the opponent's serve is usually in the table. So the first point is to go up. Second, in the short swing, the wrist bends backwards and gently touches the lower part of the ball with the racket face. Well, I think it's better to use your fingers.

Specifically, you can judge how much the opponent spins when he comes to the ball from his serve, hitting board, touching point and even his familiar habits. It seems that when the ball bounces, can you see the logo pattern on the ball? If you see it, it is still clear, but it is not getting better; I saw it, but I'm not sure, so it's more rotational; If you don't know how to look at it (except for the old ball, or there is no logo on it, haha), it may spin well. You should not only rub it hard, but even lift it to avoid making mistakes when touching the net.