Yin Yang Origin

Yinyang (yin-yang) is one of the dominant concepts shared by different schools throughout the history of Chinese philosophy. Just as with many other Chinese philosophical notions, the influences of yinyang are easy to observe, but its conceptual meanings are hard to define. Despite the differences in the interpretation, application, and appropriation of yinyang, three basic themes underlie nearly all deployments of the concept in Chinese philosophy: (1) yinyang as the coherent fabric of nature and mind, exhibited in all existence, (2) yinyang as jiao (interaction) between the waxing and waning of the cosmic and human realms, and (3) yinyang as a process of harmonization ensuring a constant, dynamic balance of all things. As the Zhuangzi (Chuang-tzu) claims, “Yin in its highest form is freezing while yang in its highest form is boiling. The chilliness comes from heaven while the warmness comes from the earth. 

The interaction of these two establishes he (harmony), so it gives birth to things. Perhaps this is the law of everything yet there is no form being seen.”(Zhuangzi, Chapter 21). In none of these conceptions of yinyang is there a valuational hierarchy, as if yin could be abstracted from yang (or vice versa), regarded as superior or considered metaphysically separated and distinct. Instead, yinyang is emblematic of valuational equality rooted in the unified, dynamic, and harmonized structure of the cosmos. As such, it has served as a heuristic mechanism for formulating a coherent view of the world throughout Chinese intellectual and religious history.

Origins of the Terms Yin and Yang

The earliest Chinese characters for yin and yang are found in inscriptions made on “oracle bones” (skeletal remains of various animals used in ancient Chinese divination practices at least as early as the 14th century B.C.E.). In these inscriptions, yin and yang simply are descriptions of natural phenomena such as weather conditions, especially the movement of the sun. There is sunlight during the day (yang) and a lack of sunlight at night (yin). According to the earliest comprehensive dictionary of Chinese characters (ca. 100 CE), Xu Shen’s Shuowen jiezi (Explaining Single-component Graphs and Analyzing Compound Characters), yin refers to “a closed door, darkness and the south bank of a river and the north side of a mountain.” Yang refers to “height, brightness and the south side of a mountain.” These meanings of yin and yang originated in the daily life experience of the early Chinese. Peasants depended on sunlight for lighting and their daily life routines. When the sun came out, they would go to the field to work; when the sun went down, they would return home to rest. This sun-based daily pattern evidently led to a conceptual claim: yang is movement (dong) and yin is rest (jing). In their earliest usages, yin and yang existed independently and were not connected. The first written record of using these two characters together appears in a verse from the Shijing (Book of Songs): “Viewing the scenery at a hill, looking for yinyang.” This indicates that yang is the sunny side and yin is the shady side of hill. This effect of the sun exists at the same time over the hill.

According to Sima Tan (Ssu-ma Tan, c. 110 B.C.E.), there existed a school of teaching during the “Spring and Autumn” (770-481 B.C.E.) and “Warring States” (403-221 B.C.E.) periods that bore the name of yinyang. He lists this yinyang school alongside five others (Confucian, Mohist, Legalist, Fatalist, and Daoist) and defines its theory as “the investigation of the shu [art] of yin and yang.” According to him, this school focused on omens of luck and explored the patterns of the four seasons. In other words, the yinyang school was concerned with methods of divination or astronomy (disciplines that were not distinct from one another in early China, as elsewhere in the ancient world) and the calendrical arts (which entailed study of the four seasons, eight locations, twelve du [measures] and twenty-four shijie [time periods]). Just as the Confucians (rujia) arose from the ranks of rushi (“scholar-gentlemen”) who excelled at ritual and music, those of the yingyang school came from the fangshi (“recipe-gentlemen”) who specialized in various numerological disciplines known as shushu (“number-arts”). These shushu included tianwen (astronomy), lipu (calendar-keeping), wuxing (“five phases” correlative theory), zhuguai (tortoise-shell divination), zazha (fortune-telling) and xingfa (face-reading). The Han dynasty chronicle Shiji (Records of the Historian) lists Zou Yan (305-240 B.C.E.) as a representative of the yinyang school who possessed a profound knowledge of the theory of yinyang and wrote about a hundred thousand words on it. However, none of his works have survived.

By the Han dynasty (202 B.C.E.-220 C.E.), yinyang was associated with wuxing (“five phases”) correlative cosmology. According to the “Great Plan” chapter of the Shujing (Classic of Documents), wuxing refers to material substances that have certain functional attributes: water is said to soak and descend; fire is said to blaze and ascend; wood is said to curve or be straight; metal is said to obey and change; earth is said to take seeds and give crops. Wuxing is used as a set of numerological classifiers and explains the configuration of change on various scales. The so-called yinyang wuxing teaching – an “early Chinese attempt in the direction of working out metaphysics and a cosmology” (Chan 1963: 245) – was a fusion of these two conceptual schemes applied to astronomy and the mantic arts.

3. Yinyang as Qi (Vital Energy)

The most enduring interpretation of yinyang in Chinese thought is related to the concept of qi (ch’i, vital energy). According to this interpretation, yin and yang are seen as qi (in both yin and yang forms) operating in the universe. In the “Duke Shao” chapter of the Zuozhuan (The Book of History), yin and yang are first defined as two of six heavenly qi:

There are six heavenly influences [qi] which descend and produce the five tastes, go forth in the five colours, and are verified in the five notes; but when they are in excess, they produce the six diseases. Those six influences are denominated the yin, the yang, wind, rain, obscurity, and brightness. In their separation, they form the four seasons; in their order, they form the five (elementary) terms. When any of them is in excess, they ensure calamity. An excess of the yin leads to diseases of cold; of the yang, to diseases of heat. (Legge 1994: 580).

 

Here, yin and yang are the qi of the universe. These qi flow within the natural as well as the human worlds. They are the basic fabric of existence:

Heaven and earth have their regular ways, and men like these for their pattern, imitating the brilliant bodies of Heaven, and according with the natural diversities of the Earth. (Heaven and Earth) produce the six atmospheric conditions [qi], and make use of the five material elements. Those conditions (and elements) become the five tastes, are manifested in the five colours, and displayed in the five notes. When they are in excess, there ensue obscurity and confusion, and people lose their (proper) nature… There were mildness and gentleness kindness and harmony, in imitation of the producing and nourishing action of Heaven. There are love and hatred, pleasure and anger, grief and joy, produced by the six atmosphere conditions [qi]. Therefore (the sage kings) carefully imitated these relations and analogies (in forming ceremonies), to regulate those six impulses…When there is no failure in the joy and grief, we have a state in harmony with the nature of Heaven and Earth, which consequently can endure long. ( Legge 1994: 708).

Thus qi, a force arising from the interplay between yin and yang, becomes a context in which yinyang is seated and functions. Yinyang as qi provides an explanation of the beginning of the universe and serves as a building block of the Chinese intellectual tradition. In many earlier texts, one may observe how yinyang generates a philosophical perspective on heaven, earth and human beings. Chapter 42 of the Laozi says that "everything is embedded in yin and embraces yang; through chong qi [vital energy] it reaches he [harmony].” It is through yinyang’s function as qi and the interaction between them that everything comes into existence. Zhuangzi also speaks about the “qi of yin and yang”: “When the qi of yin and yang are not in harmony, and cold and heat come in untimely ways, all things will be harmed.” (Zhuangzi ch. 31) On the other hand, “when the two have successful intercourse and achieve harmony, all things will be produced.” (Zhuangzi ch. 21)

The interpretation of yinyang as qi conceives yinyang as a dynamic and natural form of flowing energy, a complementary in the primordial potency of the universe. The Huainanzi offers more detailed explanation of the cosmological process of yin and yang:

When heaven and earth were formed, they divided into yin and yang. Yang is generated [sheng] from yin and yin is generated from yang. Yin and yang mutually alternate which makes four fields [wei, “celestial circles”] penetrate. Sometimes there is life, sometimes there is death, that brings the myriad things to completion. (ch. 2)

This process also explains the beginning of human life. When qi moved, the clear and light rose to be heaven and the muddy and heavy fell to become earth. When these two qi interacted and attained the stage of harmony (he), human life began. This shows that everything is made from the same materials and difference relies on the interaction.

Qi also takes on various forms and is convertible from one form to another with order and pattern. The concept of yinyang supplies a unitary vision of heaven, earth and human beings and makes the world intelligible in terms of a resonance between human beings and the universe. The Guoyu (Discourses of the States) describes how earthquakes took place at the confluence of the Jing, Wei, and Lou rivers during the second year of Duke You of the western Zhou dynasty. A certain Boyang Fu claims that the Zhou empire is doomed to collapse, explaining that

The qi of heaven and earth can’t lose its order. If its order vanishes people will be disoriented. Yang was stuck and could not get out, yin was suppressed and could not evaporate, so an earthquake was inevitable. Now the earthquakes around the three rivers are due to yang losing its place and yin being pressed down. Yang is forsaken under yin so the source of rivers has been blocked. If the foundation of rivers is blocked the country will definitely collapse. This is because of the fact that the flowing water and flourishing land are necessities for the people’s lives. If the water and land cannot sustain the people’s living conditions, the country will inevitably fall. (Discourse of the States 1994: 22).

Not only does this ¬yinyang-flavored explanation claim to illuminate natural phenomena, it also implies that there is an intrinsic relationship between natural events and political systems. Human beings, especially political leaders, must align their virtuous actions with the morally-oriented universe. If they follow and harmonize with (shun) the order and patterns of the universe, they will be rewarded with prosperity and flourishing, but if they go against and conflict with (ni) it, they will be punished with disasters and destruction. Whether one engages in shun or ni depends upon whether yin and yang are in a state of balance. Thus, yinyang provides a heuristic outlook for human understanding as well as ethical guidance for achieving harmony in action. As chapter 8 of the Huainanzi claims:

Yinyang embodies the harmony of heaven and earth, manifests the forms of myriad things, contains qi to transform the things and completes various kinds of things; yinyang extends and penetrates to the deepest level; begins in emptiness then becomes full and moves in boundless lands.