The problem of technical action. ZhangJike's technical core is backhand. After the branch overlord, the tough backhand is his best killer. If the backhand wants to have the maximum strength, the hand holding the racket should be slightly away from the handle. If it is white, it should not be too hard. Fingers should be more powerful. But when hitting the ball forehand, it will be more troublesome to use force. It is not easy to hold the handle without actual strength. In order to play a high-quality ball, the whole arm should be relatively hard and easy to get hurt. And the main phone is different from Malone's. Malone's power moves forward more, making it easier to transfer power to the ball. Faster, the ball is more like a top, but the rotation is slightly weaker. ZhangJike is dominated by rotational force. It must be wiped when rotating. Friction velocity must be added when touching the ball. This requires a strong explosive force.
The main injuries are shoulders and waist. Shoulder and waist are important joints for transmitting strength. The successor of this branch is an explosive killer, which is consumed prematurely. Malone's body can persist because he has a good sense of decline and is more skilled, which is not suitable for tightening. Forehand is the core, and the inside is mostly short-lived. However, such wrists are easy to get hurt. Malone's speed is the main factor, and his strength is the striker. Explosive power is not so important in the whole game system. Absolute power is more important. Maybe ZhangJike's friction feels better and Malone's impact feels better.