Very rare Tai Chi book about Yang family Style Tai Chi. The book was written by Chen Yanlin. He was a student of Yang Chen Fu.
The story is that he asked to borrow the secret Yang family training manual for 1 night. He then hired some scribers to copy the manual during the night.
The book shows the Long form, Broadsword form, straight sword form, Pushing hands exercises, Pole exercises and the complete 2 person form. Book is written in Chinese.
All of the important and rare training methods are contained. 
Pages can be translated using a translation app.