The Tao of ying and yang should be like this
Like a seasoned chariot rider
With accurate measurements and calculations
Hold firm the controlling reins
Follow the guiding path of the track
Manage the inside to control the outside
with calculated precision as evidenced
in rules being taught, history remembered and teachings written down.
Paul’s comment: The practice of Taoist yoga (or inner alchemy) should follow the mathematical precision of I-Ching, as it has always been practiced this way. As said by our guru.