(1) In the spring of 1978, the author of this book, Professor Nan Huaijin, was in retreat in Taipei, and due to some reason, he took time off to give a series of lectures, a total of 28 times. (2) This is one of Professor Nan's most important works. It has incisive explanations and specific guidance on the steps of actually studying Buddhism and practicing enlightenment. It is an absolute experience. (3) Although the author has said that what he said is only one-fifth of what he wants to say, reading this book will benefit a person who sincerely studies Buddhism and sincerely seeks proof.

(4) The biggest feature of this book is that it breaks through all the confusion, divergences, and unconscious mistakes on the way of practice. (5) Readers may feel that there are occasional repetitions in the content. Due to the lecture method, more attention is paid, so no deletions are added to maintain the overall picture, and try to keep the colloquialism of the lectures so that readers can feel immersive feeling. (6) This book is composed of meditation master's lecture notes, combined with audio recordings, and has been reviewed by Master Fa Cheng and Layman Xie Jinyang, and Layman Li Shujun has read the whole text. Finally, Layman Liu Yuhong has compiled the compilation and added the mark content summary.During the period when the author left Taiwan, the smooth publication of this book was really due to the contributions of the above-mentioned few, and I would like to thank them all.And please feel free to correct me.

(7) The original title of this book was "Integration of Empirical and Confidential Yuantong Cultivation Steps", in order to avoid confusion with other scriptures, it was changed to the more common title. Editing Office of Taiwan Laogu Cultural Enterprise Company