By 168 BCE: The Mawangdui tomb manuscripts preserve medical writings older than the received canon and some less developed parallels to its vessel theories. They supply a dated comparison, not a lost authorial copy of the Neijing (Harper 1998).
From 26 BCE: Liu Xiang’s court bibliographic project recorded a Huangdi neijing in eighteen juan. The relationship between that lost item and the later books remains uncertain (Unschuld and Tessenow 2011).
About 256–282 CE: Huangfu Mi compiled the Huangdi jiayi jing (“A–B Classic”), the earliest surviving work with securely datable contents traceable to the received Suwen. His preface identified a nine-juan Suwen and nine-juan Zhenjing (“Needling Classic”) as the eighteen juan of the Neijing. This retrospective identification influenced later accounts but cannot recover the Han catalogue item by itself (Unschuld 2003).
Seventh century: Yang Shangshan arranged materials corresponding to both later collections by subject in the Huangdi neijing taisu (“Grand Basis”). Surviving Japanese manuscript portions preserve variants that did not undergo exactly the same later editing as the received Suwen (Xu 1999; Unschuld and Tessenow 2011).
762: Wang Bing completed a commented Suwen in twenty-four juan and 81 numbered discourses, rearranging an earlier edition associated with Quan Yuanqi. He said he marked his additions separately. The seven discourses on the five periods and six qi are generally treated as his major insertion, but his original copy no longer survives (Unschuld and Tessenow 2011).
1057 and after: A Northern Song Imperial Editorial Office committee led by Gao Baoheng and Lin Yi collated and annotated Wang Bing’s version against other witnesses. The resulting Chongguang buzhu Huangdi neijing suwen became the basis of the received commented Suwen. Its “new corrections” record variants and editorial judgments rather than opening a transparent window onto an untouched Han text (Unschuld 2003).
1155: Shi Song printed a privately held Lingshu manuscript in twenty-four juan. All current editions descend from this Southern Song text; a later Yuan arrangement used twelve juan. The received Lingshu is consequently not an independently surviving Han book (Unschuld and Tessenow 2011).
Jin period, 1115–1234: A Suwen now held by the National Library of China is catalogued as the earliest extant printed edition. Its leaves transmit Wang Bing’s commentary and the Song editors’ work; the broad date range should not be reduced to an exact year (Library of Congress).