http://members.lycos.co.uk/alexkew/comment/taoistyoga.html .
Taoist Yoga
translated by Lu K'uan Yu
Chapter 1 - Fixing Spirit in its original cavity
My masters Liao Jan and Liao K'ung once said: 'When beginning to
cultivate (essential) nature and (eternal) life, it is necessary first
to develop nature.'
Before sitting in meditation, it is important to put an end to all
rising thoughts and to loosen garments and belt to relax the body and
avoid interfering with the free circulation of blood. After sitting the
body should be (senseless) like a log and the heart (mind) unstirred
like cold ashes.
The eyes should look down and fix on the tip of the nose, they should
not be shut completely to avoid dullness and confusion; neither should
they be wide open to prevent spirit from wandering outside. They should
be fixed on the tip of the nose with one's attention concentrated on
the spot between them; and in time the light of vitality will manifest.
This is the best way to get rid of all thoughts at the start when
preparing the elixir of immortality.