Source Use and Citation in the Shiji and Tongjian

Both Sima Qian and Sima Guang were extraordinary researchers. Each gathered an immense range of sources, compared them, and constructed narratives that synthesized what they found. But the way each handled sources in the final text is dramatically different, and those differences shaped not only the texts themselves but the entire Chinese tradition of historical documentation that followed.

This article is part of the comparison series. See the Tongjian pillar and the Shiji pillar. Sibling articles cover the two authors and moral judgment.

Sima Qian’s Sources and Method

Sima Qian had access to the imperial library, which was one of the greatest collections of texts in the ancient world. He also traveled extensively. His biographies and annals frequently mention that he visited a specific place, interviewed local people, or examined a monument. He Compared inscriptions on stone and bronze with written records. He interviewed elderly people who preserved oral traditions about fading memories of earlier centuries. This multi-source approach was not common at the time, and it set a standard that later Chinese historians would aspire to.

In the text of the Shiji, Sima Qian sometimes tells the reader when he is uncertain. His “I have heard it said” introductions flag where multiple traditions existed and he could not verify which was correct. He sometimes presents two different accounts of the same event, one after the other, without resolving the contradiction. This is not laziness. It is an honest acknowledgment that the historical record is sometimes irreducibly ambiguous, and it is a mark of his integrity as a historian that he was willing to let the reader see the seams.

However, Sima Qian does not cite his sources systematically. He does not tell you, in a footnote, which book he took a given passage from. He folds his sources into a seamless narrative and the reader has to take his word that he has done the comparison work. For a modern historian, this is frustrating. For a reader in the Han dynasty, it was an act of trust. Sima Qian was asking his audience to trust him, and the extraordinary quality of the Shiji meant that this trust was, in most cases, justified.

Sima Guang’s Sources and Method

Sima Guang had advantages that Sima Qian did not. He lived a thousand years later, which meant that many more historical texts had accumulated. He also had the resources of the Song imperial bureaucracy, including paid research assistants. His chief assistants, Liu Shu and Liu Ban, were capable scholars in their own right. He had access to the Veritable Records (shilu), the day-by-day court diaries kept for each reign. He had the standard dynastic histories. He had hundreds of collected works, memorials, and edicts.

The result was a research operation that was unprecedented in its scale. Sima Guang and his team compared sources for every event, resolved contradictions where possible, and produced a single coherent narrative. But unlike Sima Qian, Sima Guang documented his source comparison process. He created a companion work called the Kao Yi (Examination of Variants), which recorded where sources disagreed and how he resolved the disagreements.

The Kao Yi is one of the most important innovations in Chinese historiography. It separated the narrative from the scholarly apparatus, allowing the Tongjian itself to read as a smooth chronicle while preserving the evidence of source comparison in a reference work. Modern readers take this separation for granted, but it was Sima Guang who introduced it to Chinese historical writing on a large scale.

The Problem of Invented Speeches

Sima Qian, like many historians of his era, included speeches that were almost certainly invented. Not among direct quotes from documented officials, but in scenes of dramatic confrontation where no scribe was present to record what was said. These speeches served a literary purpose: they captured the character and motivation of the speaker even if the words were not exact. This practice has drawn criticism from later scholars who valued strict documentation.

Sima Guang largely avoided invented speeches. When he includes dialogue, it usually has a documentary basis: a memorial, an edict, or a recorded court discussion. However, the Tongjian sometimes summarizes the substance of what someone said without claiming verbatim accuracy, which is a halfway house between Sima Qian’s inventiveness and modern standards of quotation.

Sima Qian’s Fieldwork and Oral Sources

One of the most remarkable features of the Shiji is Sima Qian’s use of fieldwork. He visited battlefields to understand the terrain. He went to the tomb of Confucius and talked to the scholars there. He visited the region of the old state of Chu and gathered oral traditions about Qu Yuan. He went to the frontier and learned about the Xiongnu from people who lived there. This kind of physical engagement with historical evidence was rare in ancient China, where most historical work was done in libraries by people who never left the capital.

The result is that the Shiji contains information that could not have been found in books alone. Sima Qian’s descriptions of geography are more vivid because he had seen the places himself. His accounts of regional customs have the authority of an observer, not just a compiler. This gives the Shiji a quality of place-based knowledge that the Tongjian, compiled in an archive, cannot match.

Sima Guang was an archive historian. His work was done with documents and books. This is not a weakness, because the documents available to him were far more extensive than what Sima Qian had access to. But it means the Tongjian lacks the sort of firsthand observation that gives the Shiji its particular quality of lived experience. Both methods have genuine strengths and genuine limitations.

The Impact on Later Historiographical Standards

Both authors established standards that later Chinese historians followed. Sima Qian’s biographical format became the template for all twenty-three subsequent dynastic histories. But Sima Guang’s Kao Yi method, his separation of narrative from scholarly apparatus, became the template for the commentary tradition in Chinese historiography. Most later dynastic histories include a commentary layer that discusses source disagreements, and this practice traces back to Sima Guang.

The modern Chinese scholarly apparatus of footnotes, source lists, and textual criticism has roots in both traditions. The practice of documenting variants, checking editions, and comparing accounts owes more to Sima Guang’s Kao Yi model. The practice of consulting a wide range of source types, including physical evidence and oral tradition, owes more to Sima Qian. For a fuller picture of how both texts shaped the discipline, see how both shaped Chinese historiography.

The Challenge of Preserving Records in Antiquity

One aspect of source use that often goes unmentioned is the physical challenge of preserving records in the ancient world. Sima Qian worked at a time when books were written on bamboo slips or silk. The imperial library was a treasure, but it was also a fragile collection vulnerable to fire, moisture, and political chaos. Many texts from the Qin dynasty’s wars and the chaos surrounding the collapse of Qin were already lost or scattered by the time Sima Qian began his work. He had to piece together sources from fragments, and some of the gaps in his coverage reflect what was no longer available.

By Sima Guang’s time, printing had been invented and texts were far more numerous and stable. His research environment was incomparably richer in terms of the volume of accessible material. But this also created a different challenge: with so many sources, the historian’s task shifted from finding material to evaluating competing accounts of the same event. Sima Guang sometimes had three or four different versions of a single decision or conversation, each from a different dynasty’s official history or from an individual’s collected works. His Kao Yi was a response to this specific problem of source abundance.

This difference in material conditions shaped the achievement of each text. Sima Qian was a pioneer assembling a record from fragments. Sima Guang was a synthesizer reconciling an embarrassment of sources. Both tasks were hard, but they were hard in different ways. Sima Qian’s difficulty was scarcity. Sima Guang’s difficulty was abundance. The methods each developed were responses to the specific conditions of their time.

For those interested in the broader influence of both works on Chinese and East Asian education, the companion piece on their historiographical legacy provides fuller context.

Understanding these material conditions helps explain why Sima Qian’s method was more trusting of oral tradition and fieldwork while Sima Guang’s method was more systematic in its documentary comparison. Each approach was a rational adaptation to the circumstances of compilation. The two approaches also remind us that historical writing is always shaped by what is available. The historian is not just a mind making choices. They are a person working within constraints that they cannot control, and the best historians, like Sima Qian and Sima Guang, are the ones who understand those constraints and work within them productively rather than pretending they do not exist.

I often think about this when reading modern historical works. We have digital archives, search tools, and instant access to sources that Sima Qian and Sima Guang could only dream of. But the fundamental task remains the same: to gather evidence, to compare it honestly, to draw conclusions that the evidence supports, and to present those conclusions in a way that is both honest and useful to the reader. The technology has changed, but the intellectual virtues have not.

Frequently Asked Questions

Does the Kao Yi survive?

Yes, the Kao Yi is preserved as a companion to the Tongjian. It is thirty chapters long and provides crucial insight into Sima Guang’s working methods and editorial decisions.

How many sources did each author use?

We cannot count Sima Qian’s preciSely because he did not cite them systematically. Sima Guang’s sources are better documented because the Kao Yi lists many of them. He used the standard dynastic histories, the Veritable Records, and hundreds of individual works. The scale was massive even by the standards of the Song imperial archive.

Did Sima Qian fabricate sources?

There is no evidence that Sima Qian invented sources. He used real texts and real oral traditions. The speeches he invented are a literary convention, not a claim of documentary evidence. He distinguished between what he found in books and what he learned through travel.

Which author’s method is closer to modern historiography?

Sima Guang’s method of documenting source disagreements is closer to modern practice. But Sima Qian’s use of multiple types of evidence, including physical sites and oral traditions, is also a method that modern historians value. Both contributed elements that coexist in modern historical scholarship.