Besides being a master martial artist, Zhang San Feng is also a master in Daoist Internal Alchemy. In his treaty "Speaking of the Dao in plain words", Zhang San Feng provides a brief yet clear overview of the pathway of Dao cultivation via meditation and Internal Alchemy.
He discusses the general outline of different stages of Daoist cultivation, structure of the human essence-energy-spirit system, important explanation on key concepts such as truth, nature, spirit, mind, foundation practices in breathing and meditation, and barriers and useful attitudes to facilitate the practice.
As the master said, practice proceeded blindly leads one to go nowhere (section 16). This article therefore helps practitioner to focus their efforts on the core and direct pathway towards the Dao.