his main job.
　　　　  Hui-neng 惠能（638-713）, who succeeded Hung-jen
　　   as the Sixth Patriarch, was not an advocate as
　　   sitting  as the path  to enlightenment.  With him, we
　　   have a distinction  between   tso-ch'an  which attains
　　   enlightenment  through  sitting, and tso-ch'an  which
　　   attain enlightenment without sitting.   Hui-neng had a
　　   different interpretation of what tso-ch'an means.  He
　　   said that when there is no mind, or no thoughts
　　   arising, that is called "sitting" (tso). When you see
　　   internally  that the self-nature  is not moving, that
　　   is Ch'an.
　　　　  This was different from the sitting tso-ch'an of
　　   Bodhidharma. The Sixth patriarch took his inspiration
　　　　 from the Samadhi of One Act, described in the
　　   Manjusri Sutra mentioned above.  The method is to put
　　   your mind steadfastly on the One Dharma Realm
　　  
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　　   一法界, in which there is  no   differentiation  into
　　   forms. Quoting from the Vimalakirti Sutra   维摩诘经,
　　   he also said, "The straight-forward mind is the Path
　　   ." Its meaning is that all forms are   equivalent  to
　　   one  form.  Any  time,  any   place, whether  walking,
　　   standing,  sitting   or   lying  down,  there   is  no
　　   situation  that  is  not   an opportunity  to practice
　　   tso-ch'an.  In this  view   sitting  was not only  not
　　   necessary, but could be a hindrance.
　　  
　　   Fundamentals of Tso-ch'an
　　  
　　　　  As we saw above, tso-ch'an was practiced in China 
　　   long before the appearance of Ch'an. The   earlier
　　   masters practiced according to methods in the
　　   Hinayana  sutras,  which   emphasized  the  techniques
　　   collectively  known  as samatha-vipasyana.  Generally
　　   speaking, these  were methods  for achieving  samadhi
　　   through   three   aspects:   regulating   one's  body,
　　   regulating  one's  breathing,   and  regulating  one's
　　   mind.
　　  
　　   Regulating the Body by Sitting
　　  
　　　　  To regulate the body by sitting, one should ob-
　　   serve the Vairocana Seven-Points of Sitting   毘卢遮那
　　   七支坐法. This refers to the seven rules of   correct
　　   sitting posture. Each of these criteria has been used
　　　　 unchanged since ancient days.
　　  
　　   Point One: The Legs
　　  
　　　　  Sit on the floor with legs crossed either in the
　　   Full Lotus or Half Lotus position. To make the   Full