Lingshu Jing (simplified Chinese: 灵枢经; traditional Chinese: 靈樞經; pinyin: Língshūjīng), also known as Divine Pivot, Spiritual Pivot, or Numinous Pivot, is an ancient Chinese medical text whose earliest version was probably compiled in the 1st century BCE on the basis of earlier texts. It is one of two parts of a larger medical work known as the Huangdi Neijing (Inner Canon of Huangdi or Yellow Emperor's Inner Canon). The other section, which is more commonly used in Traditional Chinese Medicine, is known as the Suwen 素問 ("Basic Questions").
No version of the Lingshu prior to the 12th century has survived. Most scholars presume that the original title of the Lingshu was either Zhenjing 鍼經 ["Classic of Acupuncture" or "Needling Canon"] or Jiujuan 九卷 ["Nine Fascicles"]. They base this conclusion on the following evidence:
All current editions of the Lingshu are based on Shi Song's edition from 1155. The earliest extant edition was made in 1339 and 1340, under the Yuan dynasty, by a publishing house called the Gulin shutang 古林書堂. One copy of this edition is still preserved at the National Library of China (Guojia tushuguan 国家图书馆) in Beijing. The Gulin shutang edition was the earliest known joint edition of Lingshu and Suwen.
Many practitioners through the ages have believed that the name "Lingshu" reflected the complex esoteric nature of the writings. It has been suggested that only someone of sufficient spiritual advancement (i.e. "Ling") could fully understand its true messages.