The ability to become like wind, summoning their chi user is able to alter their bodies observed mass. Then by converting the energy this imbalance creates into kinetic energy user can drastically increase their speed allowing supersonic and even hypersonic movements. In addition to superhuman speed the change in mass allows the body to flow through opponents attacks, like wind flowing around a solid object completely unharmed. Unfortunately while opponents cannot lay a finger on user, the user can no longer interact with the tangible world. Since their limbs have no mass, they have no effect. Thus this technique is more suited to weapon masters.