Jing Fang: the Western Han scholar who made the Changes into a weather forecast

Article

The Western Han scholar Jing Fang assigned the sixty-four hexagrams to the more than 360 days of the year. His Book of Han biography says he divided them into rotating daily duties, taking wind, rain, cold, and warmth as signs. He effectively attached a weather-divination system to the Zhouyi, linking earlier and later traditions of interpreting natural signs.

Jing Fang, courtesy name Junming, came from Dunqiu in Dong Commandery. He studied the Changes with Jiao Yanshou, and the Book of Han says he used its methods with exceptional skill. Jiao’s approach already emphasized divination; Jing advanced a system known as hexagram qi. Zhen, Li, Kan, and Dui served as supervisory hexagrams and did not enter the rotation; the other sixty were allocated across the year’s 360 days, each taking its daily duty. Wind, rain, cold, and warmth on the assigned days supplied corresponding readings of fortune and misfortune. This turned the Changes, in the article’s description, from a philosophical text into a daily combination of calendar, weather forecast, and political barometer.

It was no merely scholarly game. It could carry arguments directly to the emperor. Jing repeatedly memorialized Emperor Yuan on anomalies and political successes and failures, gaining attention and appreciation. The biography records repeated fulfilled predictions of disasters, which brought him a reputation. But greater confidence in his interpretations also encouraged more direct criticism of the government and confrontation with powerful officials. Late in Yuan’s reign, relatives of the imperial family and eunuchs exercised intertwined influence. Palace Secretariat chief Shi Xian accused him, and he was ultimately executed in the marketplace. His death belonged to political conflict, not to punishment for revealing Heaven’s secrets.

Another contribution concerned musical pitch and calendrical calculation, later associated with Jing Fang’s pitch-pipe work. His theory of sixty pitch standards appears in the Book of the Later Han’s treatise on pitch pipes and the calendar. In simple terms, he extended the procedure of generating pitches by one-third additions and reductions to calculate sixty standards, then explored relations between pitch generation and calendar days. It reflects an ancient effort to connect music and calendrics through number.

Several distinctions are necessary. Historically, the Book of Han explicitly records his rotating assignment of the sixty-four hexagrams and use of wind, rain, cold, and warmth as signs, alongside his memorials and Shi Xian’s accusations leading to execution. The transmitted text is a separate question: the composition and transmission of the extant Jing Family Commentary on the Changes are debated. This article has not checked relevant papers and does not present a particular attribution as scholarly consensus. A third layer is legendary reputation: the biography says his predictions repeatedly matched events, but a historian’s account and proof of the method’s reliability are different things.

His death is often dramatized as that of a man able to calculate everyone’s fate but his own. The line is moving, yet it misrepresents the political history. Jing was killed in the struggles of Emperor Yuan’s later reign after offending a powerful eunuch such as Shi Xian; the accusations concerned slandering government and attributing evil to the emperor. Calling the death heavenly punishment or destiny turns politics into metaphysics. That also obscures Jing’s own use of anomalies to criticize politics rather than escape it.

His hexagram-qi system had lasting influence. Jing Fang’s Changes became a major strand of Han scholarship; the article traces a lineage toward Guan Lu in Wei-Jin times and Li Chunfeng in the Tang. Its limitation is also visible: a daily divination manual offers practical correspondences but narrows the space of ethical and philosophical interpretation. The later division between image-and-number study and meaning-and-principle study can already be seen here. Compare this story with the next article on Guan Lu: Jing emphasizes numbers through daily hexagram assignments; Guan emphasizes images drawn from things and immediate circumstances. Number and image represent two poles of Han-Wei Changes divination.

The language of anomalies also had an institutional channel. Han practice could dismiss the Three Excellencies following disasters; when Heaven changed, the chancellor might bear responsibility. Jing used that framework to translate unusual celestial events into judgments about government, crossing from technique into politics. His tragedy followed from the same channel: when his criticism reached someone as powerful as Shi Xian, the anomaly language changed from protection to a death warrant. Techniques may be neutral; people using them cannot stand outside the political consequences.

Sources

• Ban Gu, Book of Han, “Jing Fang’s Biography,” records rotating daily duties for the sixty-four hexagrams, wind, rain, cold, and warmth as signs, his memorials on anomalies, and execution following Shi Xian’s accusations.
• The Book of the Later Han, Treatise on Pitch Pipes and the Calendar, records Jing Fang’s sixty pitch standards.
• This article has not checked specific papers on the transmitted Jing Family Commentary on the Changes. The divination accounts in the Book of Han are treated as historical narratives.