Huangdi Neijing

The *Huangdi Neijing*, or *Inner Canon of the Yellow Emperor*, is a foundational collection of ancient Chinese medical writings that has shaped Chinese medicine for over two thousand years. The work is structured as a dialogue between the mythical Yellow Emperor and six of his legendary ministers, and it is divided into two main texts, each containing eighty-one chapters. The first, the *Suwen* (or *Basic Questions*), lays out the theoretical basis of Chinese medicine and its diagnostic methods. The second, the *Lingshu* (or *Spiritual Pivot*), focuses extensively on acupuncture therapy. Together, these are known as the *Neijing* or *Huangdi Neijing*, though in practice the title *Neijing* often refers only to the more influential *Suwen*. Two other texts, the *Mingtang* and the *Taisu*, also bore the *Huangdi Neijing* prefix but survive only in fragments. The book was popular among Taoists.

The earliest known reference to the *Huangdi Neijing* appears in the bibliographical chapter of the *Hanshu* (completed in 111 CE), which also mentions a now-lost *Huangdi Waijing*. The scholar-physician Huangfu Mi (215–282 CE) was the first to claim that the 18-volume *Huangdi Neijing* listed in the *Hanshu* corresponded to two books circulating in his time: the *Suwen* and the *Zhenjing* (or *Needling Canon*), each in nine volumes. Scholars believe the *Zhenjing* was an earlier title for the *Lingshu*, so the Han dynasty *Huangdi Neijing* likely consisted of two texts close in content to the modern *Suwen* and *Lingshu*. The text is structured as a dialogue between the Yellow Emperor and his ministers or physicians, most often Qíbó, but also Shàoyú. One possible reason for this format was to allow the anonymous authors to avoid attribution and blame.

The *Neijing* moved away from older shamanistic beliefs that disease came from demonic influences. Instead, it interprets such influences as any disease-causing element—like viruses, bacteria, or carcinogens—which can be categorized by imbalances in diet, lifestyle, emotions, environment, and premature aging. The universe is represented through symbols and principles such as yin and yang, the wuxing (interpreted as abstract symbols like x, y, z in algebra), and qi. These systems help understand natural processes, including human health. Man is seen as a microcosm reflecting the larger macrocosm, so the same principles of yin and yang, the five elements, and environmental factors like wind, damp, heat, and cold apply to the human body. Traditional medicine is a way to maintain this balance.

Regarding the date of composition, archaeological discoveries at Mawangdui, Hunan, in the 1970s changed earlier opinions. Before these finds, the work was dated from the Warring States period to as late as the Han dynasty (206 BCE–220 CE). However, the medical texts found there, sealed in a royal tomb in 168 BCE, show significant differences from the systematic theory in the *Neijing*. Scholars Jianmin Li, Vivienne Lo, and Donald Harper agree that the *Neijing* was compiled after the Mawangdui texts. Historian of science Nathan Sivin concluded that the *Suwen* and *Lingshu* likely date to the first century BCE, much later than previously thought. Sivin also noted that the work is not a single book but a collection of diverse writings, some of which disagree or comment on others, and that as of 1998, no reliable translation existed. Earlier arguments, such as those in *Celestial Lancets* (1980) by Joseph Needham and Lu Gwei-djen, placed the *Suwen* in the second century BCE, citing evidence that it predates the *Shennong Bencao Jing*. Parallels with third- and fourth-century BCE literature suggest some portions may be from that era, though the dominant role of yin/yang and five-element theories indicates these medical ideas are not older than about 320 BCE. German scholar Paul U. Unschuld noted that several 20th-century scholars hypothesized the language and ideas of the *Neijing Suwen* were composed between 400 BCE and 260 CE, with only a small portion transmitting concepts from before the second century BCE. The work later underwent major editorial changes. Du Fu, a fourteenth-century literary critic, believed the *Suwen* was compiled by several authors over a long period and then brought together by Confucian scholars during the Han dynasty.

In 762 CE, Wang Bing finished his revision of the *Suwen* after twelve years of work. He collected various versions and fragments, reorganizing them into the present format of eighty-one treatises. Treatises seventy-two and seventy-three are incomplete.