What Are Oracle Bones?
Oracle bones are pieces of animal bone or turtle shell — primarily ox scapulae and turtle plastrons — that were used in divination ceremonies during the Shang Dynasty. Inscribed with the earliest known form of Chinese writing, they represent one of archaeology's most extraordinary discoveries and provide our most direct window into Shang thought, religion, and daily concerns.
The discovery of oracle bones in the late 19th century near Anyang, Henan Province, transformed our understanding of ancient China. Farmers initially unearthed them and sold them as "dragon bones" to apothecaries, but scholars soon recognized the inscriptions as an ancient script. Systematic excavation beginning in the 1920s has since recovered hundreds of thousands of inscribed pieces.
The Divination Process
The process of oracle bone divination followed a structured ritual sequence:
- Preparation: The bone or shell was cleaned and polished. Hollow depressions were carved into the back surface.
- Application of heat: A heated bronze rod or burning brand was applied to the depressions, causing the bone to crack.
- Reading the cracks: The resulting cracks — their direction, length, and shape — were interpreted by trained diviners as answers from the ancestors or the high god Di.
- Inscription: The question posed, the date, the diviner's name, and often the result or outcome were carved into the bone in a script we now call Oracle Bone Script (jiǎgǔwén).
This system meant that oracle bones served simultaneously as ritual instruments and administrative records — a unique combination that makes them invaluable to historians.
What Did the Shang Ask?
The range of topics addressed in oracle bone divinations reveals the concerns of Shang royal life:
- Military matters: Should we attack? Will this campaign succeed? How many troops should be sent?
- Agriculture: Will the harvest be good? Is it a good time to plant?
- Weather: Will it rain? Will there be floods?
- Health: Will the king recover from his illness? What is causing this toothache?
- Royal births: Will the child be auspicious? Is this a propitious day for delivery?
- Ritual timing: Is this day appropriate for a sacrifice to Ancestor X?
The mundane alongside the momentous — oracle bones capture both grand affairs of state and intimate personal worries, making them uniquely humanizing documents from three thousand years ago.
Oracle Bone Script: The Ancestor of Chinese Writing
The script found on oracle bones is a fully developed writing system, not a primitive precursor. It contains thousands of distinct characters, including both pictographic elements (characters visually resembling what they depict) and more abstract phonetic and semantic components. Modern scholars have identified over 4,000 distinct characters in the oracle bone corpus, of which roughly 1,500 have been successfully deciphered.
The continuity between Oracle Bone Script and modern Chinese characters is remarkable. Many basic characters — for the sun, moon, mountain, water, and common animals — retain visible connections to their ancient forms, making this one of the longest continuously used writing traditions in human history.
Key Figures: The Royal Diviners
Divination was not left to amateurs. A specialized class of trained diviners (zhen ren) conducted and recorded the ceremonies. Oracle bones frequently record the diviner's name alongside the inscription. During the reign of Wu Ding, named diviners such as Bin, Que, and Zheng appear repeatedly, suggesting organized schools or lineages of divination specialists who served the royal court across decades.
Why Oracle Bones Matter
Beyond their religious significance, oracle bones are invaluable historical sources because they are contemporary documents — not later reconstructions or tradition. They give us:
- The names of Shang kings, corroborating and extending king lists preserved in later texts
- Evidence of military campaigns, diplomatic contacts, and territorial concerns
- Insights into religious beliefs, ritual calendars, and cosmology
- Information about crops, animals, climate events, and natural phenomena
No other Bronze Age civilization in East Asia left behind a comparable body of primary written documentation. Oracle bones remain among the most important historical artifacts ever discovered.