A perfect introuction to chikung.
A great introduction in theory, sources and roots by a master in the subject. It's nice to see a critic "westerner" point of view and concern about modern research in an author so recognized in the matter.
By the way, the Eight Brocade excercises explanation in clear, and the guideness about mind focus through the each Piece is helpful.
Like always, in any art or serious deep discipline, learning only by reading is a poor practice, it's better to find a good master that teaches you from the direct practice. But if you are a chikung practitioner already, I think that this book could be a very good source to learn some new ways of increase and maintain your health.
Simple and well written. A very good book in the subject.