Li Floats, Jin Is Sunken; Li Is Dull, Jin Is Sharp

In martial arts, li pertains to the external manifestation of power derived from muscle and bone; jin is the force that comes from tendons and is generated by using the mind to lead the qi or human biolectricity.  As we get older, li isgradually lost -- however, through patient and diligent practice and meditation, internal martial artists learn to use their minds to relax the muscles as much as possible and to generate and lead qi  in the local area around the muscles being used.  Older martial artists who have been practicing their art for 50 years will produce the internal jin force that is more powerful than the younger martial artist's external li.