Shoes: it's not too much to describe Liu Xiang's shoes with "as light as feather". Nike company specially sends people to design shoes according to Liu Xiang's foot shape, what materials are used specifically, which is a highly confidential Nike company.

Insole: Liu Xiang only uses insoles during training. Because of the high-tech chips in the insole, Liu Xiang can record all kinds of physiological indexes during the whole hurdle running of Liu Xiang when hurdling hurdles.

Then, it is displayed in a microcomputer.

According to these data, Liu Xiang's coach can adjust training intensity and content.

Studs: studs are the key to Liu Xiang's final victory in the "bird's nest". Liu Xiang's "bird's nest" first show is not meant to win the championship, but according to the hardness and stiffness of the runway, it should adjust the length of the studs. If the runway is hard, short staples will be used. If the runway is soft, use long nails.

The material of the studs is also highly confidential by Nike. It is said that it is a space alloy. It is used on the space shuttle. It is also said that it is a kind of high-tech ceramic used in radar watch. What material is it, only Liu Xiang and Nike know it, but it can be certified that it is the lightest and hardest nail in the world.