Yellow Court: The Exalted One's Scripture on the 
External Illumination of the Yellow Court

The Yellow Court Series focuses on the monumental and influential Taoist teachings of the Yellow Court Scriptures, which are divided into two books simply known as the External Illumination (attributed to Lao Zi, sixth century BCE) and the Internal Illumination (composed by Madame Wei Huacun, 251-334 CE, founder of the Highest Clarity Sect).
The Yellow Court teachings were the first Taoist texts to describe the methods of Internal Alchemy through meditation and Qigong methods, as opposed t...