Reporter: Can you give us an explanation for the injury suffered by Liu Xiang and what caused it? Wang Weiming: Yes. The acute injury can be a partial or complete rupture of the Achilles tendon, while the chronic injury is often named as “Achilles tendonitis”. In Liu Xiang’s case, it should be “Achilles tendonitis”. Some friends have always wondered why Liu Xiang could achieve such outstanding results in the 110 hurdles when, normally, Asian people are not physically fit for track and field events. The important factor is that the technical characteristics of Liu Xiang’s movement are different from those of ordinary people. Usually people land heel first after hurdling, while Liu Xiang lands on his feet palm first. Such a technical action, in a high-level competition, will become the key to victory. However, this technical action is also a double-edged sword, on the one hand, it can improve sports performance, on the other hand, it just increases the load on the Achilles tendon, and the long-term, repeated, cumulative excessive strain on the Achilles tendon will eventually lead to a series of pathological changes of “Achilles tendonitis”. Liu Xiang retired from the U.S. Grand Prix in May this year due to injury for two reasons: the first is a thigh muscle strain, and the second is a problem with the right Achilles tendon. This withdrawal should also be a strategic consideration, do not want to make the injury aggravated for a not too important game, in addition to this game so close to the date of the Olympic Games, more do not want to affect the Olympic Games. But the injury in May is indeed too close to the competition time on August 18. Liu Xiang’s Achilles tendon injury cannot be healed under the premise of continuing to train at a high volume. Reporter: Then Liu Xiang can also play closed to participate in the competition? Why not take this way this time. Wang Weiming: There are two main ingredients of the closed drug, one is hormone, which has anti-inflammatory effect; the other is local anesthetic, which has anesthetic and analgesic effect, so as a temporary treatment, the closed drug can only work under less serious condition, and should not be used too often and the dosage should not be too large, otherwise, when the injured part is in a completely anesthetized state, Liu Xiang can’t make corresponding gait adjustment according to the actual situation of the game. Make the corresponding gait adjustment. It is very likely that Liu Xiang’s right Achilles tendon will be ruptured in a numb state, which will be the end of his sports mission for an athlete. Reporter: Can Liu Xiang’s injury still be recovered? Wang Weiming: It is possible to heal this injury. Under the scientific training and systematic and comprehensive treatment and rehabilitation, it is believed that Liu Xiang can still recover his former athletic state and will not say goodbye to the field because of such an injury. And Liu Xiang has a strong technical team behind him, which will make reasonable arrangements and adjustments for him, so please do not worry about this. Reporter: Liu Xiang’s psychological trauma this time should also be very big, will affect his recovery? Wang Weiming: Yes, the psychological factor will directly affect the sport state. 18 days of competition, Liu Xiang not only suffered from physical injuries, but also great psychological pressure. In this huge psychological pressure, it is easy to make the muscle more nervous, further aggravate the condition or lead to new damage. Therefore, Liu Xiang chose to withdraw from the competition, is also a wise choice. The reasonable use of technical movements and protection in sports is the key to reducing sports injuries.