Originally published in 1926, this book gives a rare glimpse into traditional internal training from a bygone era. The first part of this book details a set of 13 Nei Gong Exercises. This set strengthens and fills the body with Qi. The training prohibitions, the sequence of training, the methods of hitting and rubbing, the Nei Gong Exercises, and the self massage are all covered in detail. Additionally, there are also in-depth sections on the theory behind the training. The second part of this book reveals the oral teachings related to Xingyi Quan.