The Dacheng Jieyao 大成捷要 Essentials of Great Achievement

Dacheng Jieyao (Essentials of Great Achievement) was originally a note on Taoist cultivation and alchemy by Liu Huayang (1736–?), an important figure of the Wuliu School of Taoism in the Qing Dynasty and an inner alchemist. It later circulated among the people through handwritten copies. There are two surviving handwritten versions of this book: one is the Songshan Version, preserved by Ma Yuxiu, a Taoist at Chongfu Palace on Mount Song in Henan; the other is the Laoshan Version, copied from the Songshan Version by scribe Wang Qianyi, who brought it eastward and stored it at Taiqing Palace on Mount Lao in Shandong. The Laoshan Version was printed and circulated by Taiqing Palace in Liaoning in 1929. The book is a must-read practical manual for practitioners in modern times and holds significant reference value in terms of practical cultivation and verification.

Dacheng Jieyao focuses on alchemy, compiling essential theories from ancient alchemical texts. Its ideological system is similar to that of the Northern Sect of Taoist alchemy—the Quanzhen School. Although the preface repeatedly emphasizes that it "analyzes and lists the three-yuan great dao alchemical classics passed down by immortal and buddha patriarchs of all ages," a comprehensive reading of the book reveals that it only contains the principles and methods of the "Heavenly Yuan Great Elixir" (focused on cultivating nature and destiny) and lacks content on the Earthly Yuan (furnace-fire refining) and Human Yuan (the "grafting flowers and transplanting wood" technique). Thus, the alchemy discussed in the book refers to inner alchemy, distinct from outer alchemy. By extracting many profound insights from classics on the "Heavenly Yuan Great Elixir," it provides extremely detailed descriptions of various physical and psychological reactions, as well as specific techniques, during the cultivation of the Heavenly Yuan Great Elixir. In its explanations, the book emphasizes practical methods, using straightforward language and rarely employing metaphors or terminology that confuse beginners (unlike Zhouyi Cantongqi [The Unity of the Three] or Wuzhen Pian [Awakening to Truth]), nor does it contain lengthy and obscure qigong theories. This makes it easy for newcomers to alchemy to enter the path.

Focused on practicality, Dacheng Jieyao outlines five essential matters and seven major "great chaos" (primordial chaos) that practitioners must understand to enter its teachings. It states: "If one does not understand such things as the 'living child hour' and the seven great chaos，no matter how eloquently future sages may speak—even if their words make flowers fall from the sky and golden lotuses burst from the earth—even with resolute dedication to cultivation, one will hardly transcend the Three Realms and ascend to the Great Luo Heaven."

The five essential matters are:

The seven stages of "establishing the foundation through chaos" are:

These explanations remove the common obstacles that hinder seekers. However, Dacheng Jieyao shares a flaw with other alchemical texts: it keeps some crucial methods and formulas secret. For example, techniques like "Zhou Tian Fire Phases" in the Small Circulation and "Five Dragons Honoring the Sage" in the Great Circulation are only mentioned in passing, requiring guidance from a master. As the author himself acknowledged, "these aspects can only be understood through the personal transmission of my teacher."