Interpreting and Investigating the Chapter: 'The Sage Perceived the Profundities of the World' — The Primordial Code of *Xiang* and *Yao*

Chapter 8: The Unity of Xiang and Yao — The Complete Architecture of the Zhou Yi

I. Xiang as the Basis of Yao; Yao as the Elaboration of Xiang

The sequence in the scripture—mentioning Xiang first, then Yao—carries deep significance.

The Xiang is the grasp of the world’s zé (deep structure); the Yao is the grasp of the world’s dòng (process of change). Epistemologically, we must first understand the structure of things before we can understand their changes—because change always occurs within a certain structure. Without structure, change has no anchor; without change, structure lacks vitality.

The Xici Shang Zhuan (Chapter 2) states:

"The Sage establishes the trigrams, observes the images (xiang), attaches statements to them to illuminate auspiciousness and inauspiciousness; firmness and yielding push against each other, giving rise to transformation."

"Establishing the trigrams and observing the images" (shè guà guān xiàng, 设卦观象) is the first step—establishing the structure; "attaching statements to illuminate auspiciousness and inauspiciousness" is the second step—describing the change and its trend; "firmness and yielding push against each other, giving rise to transformation" is the third step—revealing the dynamic root of change.

It also states:

"Therefore, what the superior man dwells upon and rests in is the sequence (xù, 序) of the Yi; what he delights in and plays with are the statements of the Yao. Thus, when dwelling, the superior man observes the images and delights in the statements; when moving, he observes the changes and delights in the divination."

"Dwelling, observing the images" (jū zé guān xiàng, 居则观象)—when at rest, observe the hexagram image to grasp the overall structure; "moving, observing the changes" (dòng zé guān biàn, 动则观变)—when acting, pay attention to the line changes to grasp the specific direction. This is the division of labor and cooperation between Xiang and Yao in practical application.

II. Xiang Pertaining to Substance (Tǐ), Yao Pertaining to Function (Yòng)

To borrow the terminology of the Song Dynasty Neo-Confucians, the Xiang belongs to "substance" (tǐ), and the Yao belongs to "function" (yòng). But this is not a simple division of substance and function—in the Zhou Yi, "substance" and "function" interpenetrate.

Every Xiang inherently contains the potential for change (yòng within tǐ); every Yao presupposes a structural framework (tǐ within yòng). The Xiang of Qian is Heaven, but the six Yao of Qian, from hidden to soaring to overreaching, display the complete process of Heaven's operation—the Xiang becomes dynamic within the Yao. Conversely, the judgment of auspiciousness or inauspiciousness for every Yao relies on its position within the overall structure of the hexagram image—the Yao finds its positioning within the Xiang.

Wang Bi, in his Zhou Yi Lüeli, Ming Xiang (Brief Notes on the Zhou Yi, Illuminating the Image), states:

"The Image, it is what expresses meaning. Words, they are what clarify the Image. Nothing expresses meaning as well as the Image, and nothing clarifies the Image as well as words. Words arise from the Image, so one may follow the words to observe the Image; the Image arises from meaning, so one may follow the Image to observe the meaning. Meaning is exhausted by the Image, and the Image is made manifest by the words. Therefore, words serve to clarify the Image; having grasped the Image, one forgets the words; the Image serves to preserve meaning; having grasped the meaning, one forgets the Image."

Wang Bi’s exposition is often simplified to the dictum "forget the Image to grasp the Meaning." In reality, he precisely describes the progressive relationship between the three layers of "Meaning → Image → Statement" (i.e., Zé → Xiang → Ci). The "meaning of the world" (zé) is the most profound texture (the meaning); the Xiang is the taking of the image of that meaning; the Ci (attached statement) is the verbalization of the Image. The three are inextricably linked and none can be dispensed with.

III. Different Emphasis in Historical Interpretations

The different schools of Yi study reflect different emphases on this chapter:

The Han School of Image and Number (Xiang Shu Pai) (e.g., Meng Xi, Jiao Yan Shou, Jing Fang) focused on the "Xiang." They developed complex theories like the Trigram Energy (gua qi), Natal Embracing (nà jiǎ), Flying and Submerged (fei fu), etc., integrating almost everything in the cosmos into the system of trigram images. This school represents an extreme development of the first half of the chapter: "The Sage perceived the profundities of the world, and simulated them according to their outward forms; he depicted them according to what was appropriate for the things, and thus he is called the Xiang."

The Wei-Jin School of Rationale and Principle (Yi Li Pai) (e.g., Wang Bi, Han Kangbo) emphasized "meaning," advocating "forgetting the Image to grasp the Meaning" (dé yì wàng xiàng, 得意忘象) and "sweeping away the Image to return to Rationale." They argued that excessive preoccupation with images and numbers obscured the underlying principles, advocating for direct apprehension of the rationale of the trigrams and lines. This school, in a sense, stressed the latter half of the passage—"attaching statements to determine auspiciousness and inauspiciousness"—as the Ci (Rationale) is the ultimate goal, and the Xiang is merely the means.

The Song Dynasty Neo-Confucians (e.g., Cheng Yi, Zhu Xi) attempted to balance image-number and rationale-principle. Cheng Yi's Yichuan Yizhuan stressed rationale without abandoning image; Zhu Xi's Zhou Yi Benyi emphasized original meaning (the function of divination) while incorporating rationale, each with a different focus but all attempting synthesis.

The Qing Dynasty Philologists (Pǔ Xué Jiā) (e.g., Hui Dong, Jiao Xun, Zhang Huiyan) returned to the path of image and number, using rigorous textual criticism to reconstruct the Han Dynasty system of image-number learning, correcting the tendency of Song scholars to engage in empty talk about rationale.

These different approaches to Yi study are actually developments of different facets of this chapter. If we return to the scripture itself, we find that the design of the scripture emphasizes the balance of Xiang and Yao, the balance of "structure" and "process," and the balance of "observation" and "decision-making"—any interpretation that leans too heavily on one side will miss the complete intention of the text.