 It is contrasted by "Jin," the energy one sees when a sitting cat flashes out a paw to slap a bothersome dog.In the case of Li, there is usually a drawing back of the arm and a tensing of muscular strength as it shoves out with whatever force resides in the muscles.Jin, on the other hand, snaps out without preparation, completely relaxed and impacting with greater force because it moves faster than Li, like being hit with a fastball.