Tai Chi Chuan '18 Methods of the Mind' A free ebook written bij Douwe Geluk from Apeldoorn in the Netherlands. Douwe Geluk is a martial arts teacher who is teaching the Chinese martial arts in Europe. This must have free ebook is about learning you the 18 ways of the mind. A must have for the true martial arts practitioner, a very good read as well. Douwe Geluk owns the Fu Yuan martial arts Tai Chi Apeldoorn school in the Netherlands.