Huangdi Neijing and Ling are both parts of Huangdi Neijing, which is the earliest and most important medical work in existence and the basis of the theoretical system of traditional Chinese medicine.

Lingshu, also known as Needle Sutra and Nine Needles, is the earliest extant theoretical work of TCM, which was written in the Warring States Period.

* * * Nine volumes and eighty-one articles, together with the nine volumes of Su Wen, are called Huangdi Neijing, which has absolute authority on acupuncture.

A Brief Comment on Lingshu compiled by Ma Machan in Ming Dynasty is the first person to comprehensively comment on Lingshu in history/view/655879.htm.