Textual Stratigraphy and Canonical Formation

The *I Ching* (《易经》), as received in the canonical *Zhouyi* (《周易》), is not a static monument but a dynamic textual palimpsest, shaped by centuries of divinatory practice, philosophical reinterpretation, and political canonization. Its present form—a corpus of 64 hexagrams with attached judgments (*gua ci* 卦辞), line statements (*yao ci* 爻辞), and the *Ten Wings* (《十翼》)—represents a stratified archive where the original Western Zhou divinatory core is overlaid with Warring States cosmological speculation and Han dynasty editorial synthesis. For any structural analysis aiming to decode the symbolic logic and divinatory mechanics of the hexagrams, establishing a rigorously defined textual base is the non-negotiable prerequisite. Without distinguishing between the primordial oracle and its later exegetical garments, one risks conflating disparate historical layers, thereby invalidating any claim to recover the system’s original architectonics. This chapter undertakes a critical textual stratigraphy of the *I Ching* from the earliest Western Zhou precursors through the Han dynasty’s canonical fixation. We will analyze the core *Zhouyi* stratum against later accretions such as the *Xici* (《系辞》), *Xiangzhuan* (《象传》), and *Wenyan* (《文言》), utilizing paleographic evidence from the Shanghai Museum bamboo slips, Mawangdui silk manuscripts, and other archaeological finds. The editorial interventions of Wang Bi (王弼, 226–249 CE) and Kong Yingda (孔颖达, 574–648 CE) will be examined as pivotal moments that redefined the textual tradition for over a millennium. The ultimate objective is to delineate the authoritative textual strata for subsequent structural analysis, distinguishing between the divinatory apparatus and its philosophical commentaries, thereby providing a clean, historically informed foundation for exploring the 64 hexagrams’ symbolic logic.

1.1 Methodological Framework: Stratigraphic Analysis of Canonical Texts

The methodology employed here is modeled on archaeological stratigraphy, adapted to textual criticism. Just as an archaeologist excavates a tell (settlement mound) to isolate artifacts from distinct occupational phases, the textual critic must “excavate” a canonical work like the *I Ching* to separate its historical layers. This approach rejects the notion of a monolithic, authorial original—a fantasy for ancient texts transmitted through scribal communities—and instead embraces the reality of iterative composition, accretion, and redaction. For the *I Ching*, we identify at least four major strata:

1. The Western Zhou Divinatory Core (c. 1046–771 BCE): The original set of 64 hexagrams with concise judgments and line statements, used for bronze-inscribed prognostication and court divination. This layer is characterized by terse, often enigmatic phrases, many of which reference historical events (e.g., “Gaozong fa Guifang” 高宗伐鬼方) and material conditions (e.g., “lüe zheng bi wu jiu” 略征敝无咎). Its syntax is formulaic, and its worldview is largely this-worldly, focused on success/failure in military, agricultural, and familial endeavors. 2. The Warring States Philosophical Accretions (c. 5th–3rd centuries BCE): The *Yizhuan* (《易传》), or *Ten Wings*, a collection of ten commentaries that systematically reinterpret the divinatory core through cosmological, ethical, and metaphysical lenses. The *Tuan Zhuan* (《彖传》) and *Xiang Zhuan* (《象传》) are the earliest, likely composed in the mid-Warring States period, followed by the *Xi Ci* (《系辞》), *Wenyan* (《文言》), and others. This layer introduces concepts like *yuan heng li zhen* (元亨利贞) as cosmic generative forces, *yin-yang* dialectics, and the sage’s alignment with the Dao. 3. The Han Dynasty Canonical Synthesis (c. 2nd century BCE–2nd century CE): The period during which the *Zhouyi* text was standardized, with the *Ten Wings* formally attached. This process involved the competition between the *jinwen* (今文) and *guwen* (古文) textual traditions, the latter claiming a more ancient version discovered in the walls of Confucius’s house. The Han saw the text fixed into its received structure, though variant readings persisted (e.g., the Mawangdui silk version). 4. The Wei-Jin Philosophical Reconstruction (3rd–4th centuries CE): Wang Bi’s commentary and edition, which privileged the *Ten Wings* as the key to the *Zhouyi*, effectively subordinating the divinatory core to a玄学 (Xuanxue, “Profound Learning) philosophical system. Wang Bi’s textual choices—likely based on the *guwen* tradition—became the basis for the Tang dynasty’s official edition via Kong Yingda’s *Zhouyi Zhengyi* (《周易正义》), thus freezing a particular textual state for over a thousand years.

This stratigraphic model allows us to pose precise historical questions: Which phrases in a given hexagram belong to the Western Zhou core? When were the *Tuan Zhuan* and *Xiang Zhuan* composed relative to the core? How did Wang Bi’s editorial decisions alter the textual tradition? Answers require a convergence of paleographic data, historical context, and comparative analysis of variant texts.

1.2 The Western Zhou Divinatory Core: Evidence from Oracle Bones and Bronzes

The earliest antecedent of the *I Ching* is not the hexagram text itself but the Shang dynasty’s pyromantic divination system, recorded on oracle bones (*jiaguwen* 甲骨文). While the Shang used cracked turtle plastrons and ox scapulae to pose questions to ancestors and deities, their divination records contain no hexagrams. However, they do exhibit a numerical symbolism that directly prefigures the *I Ching*’s binary structure. Shang diviners recorded prognoses using numbers, typically sequences like “八八六六” (eight-eight-six-six), which scholars interpret as a numeric representation of broken (yin) and whole (yang) lines. In the *Jiaguwen Heji* (《甲骨文合集》), entry 14294 records: “贞：其呼？八八六六。” (“Divined: Will it summon? [The lines are] eight-eight-six-six.”) This numeric notation—where 6 (broken) and 7, 8, or 9 (whole, with 9 being a changing line) appear—is the direct progenitor of the hexagram system. The transition from numeric to graphic symbols (⚋ for yin, ⚊ for yang) likely occurred in the early Western Zhou, as suggested by bronze inscriptions that occasionally depict hexagrams.

The core *Zhouyi* judgments and line statements reflect the political and military concerns of the early Zhou court. The *Shijing* (《诗经》) and *Shangshu* (《尚书》) provide a parallel literary milieu, with similar phrasing and worldview. For example, Hexagram 1, *Qian* (乾), judgment: “元亨利贞” (yuan heng li zhen) is often abstracted into a cosmological principle in the *Ten Wings*, but in its original context, it likely meant “primordial flourishing, beneficent, correct, and steadfast”—a blessing for a military campaign or royal endeavor. The line statements frequently contain historical allusions that anchor them in the Western Zhou period. The most famous is the fourth line of *Qian*: “或跃在渊，无咎” (“Now he leaps in the deep; no blame”), which Li Xueqin (李学勤) has linked to King Wu of Zhou’s crossing of the Meng River before the Battle of Muye. Similarly, Hexagram 14, *Da You* (大畜), line 6: “何天之衢，亨” (“How vast is Heaven’s thoroughfare! Prosperity”) may reference King Wen’s incarceration at Youli. These historical echoes are not mere rhetorical flourishes; they function as mnemonic anchors for a divinatory tradition that relied on a shared cultural memory.

The language of the core is proverbial and elliptical, often lacking the grammatical particles that later commentaries added to smooth meaning. For instance, Hexagram 15, *Qian* (谦), judgment in the received text: “谦，亨，君子有终，利涉大川，利贞” (“Humility: Success. The noble person has an end. Beneficial to cross the great river. Beneficial to be correct.”). The early core likely omitted the final “利贞” and perhaps even “君子有终,” as suggested by the Shanghai Museum bamboo slips (see §1.5). The phrase “利涉大川” is a common topos in Western Zhou inscriptions, denoting a successful ex