The 105th chapter of the Records of the Grand Historian provides the primary documentation for the career of Chunyu Yi, an official and physician during the Western Han dynasty. Initially serving as a minor administrator for a granary in the state of Qi, he transitioned to medical practice during the second century BC, establishing a precedent for clinical documentation.
Early Career and Training
Born between 215 BC and 205 BC into a land-owning family, Chunyu Yi held a bureaucratic position in Qi. In 180 BC, at approximately 35 years of age, he began his formal medical studies. He received instruction from mentors Gongsun Guang and Yang Zhongqian, while also analyzing the writings of the physician Bian Que. His transition from granary official to medical practitioner marked a shift in his professional focus, eventually earning him an audience with the King of Qi.
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Chunyu Yi developed a diagnostic approach that prioritized the systematic correlation of symptoms with established medical texts. He claimed the ability to perceive qi and frequently documented 25 specific case histories to substantiate his findings. His records often referenced the Maifa, or Model of the Pulse, to diagnose conditions. By linking his observations to authoritative frameworks, he sought to create a standard for clinical practice that emphasized internal logic and empirical assessment.
Legal Challenges and Pardon
During his practice between 176 BC and 167 BC, Chunyu Yi faced accusations of malpractice, specifically for allegedly refusing to treat certain patients. He was sentenced to mutilation as punishment. His survival was secured when his youngest daughter, Tiying, successfully petitioned Emperor Wen for a pardon. Following his release, he produced an autobiography and a treatise detailing his theories on etiology, diagnosis, and treatment, which were later preserved within Sima Qian's historical records.
Historical Significance
Later scholars, including Huangfu Mi and Jiang Guan, categorized Chunyu as a significant figure in medical history, sometimes identifying him by the title Canggong, or Granary Master. His detailed case histories remain among the few surviving medical writings from the Han dynasty. Contemporary analysis by researchers such as Vivienne Lo and Elisabeth Hsu situates his work as a foundational contribution to systematic medical correspondence, comparable in archival importance to ancient Greek or Egyptian medical texts.
Fast facts
- Born: -205 to -215
- Died: -149
- Birthplace: Nyingchi
- Place of Death: Chang'an
- Citizenship: Qi; Western Han
- Professional Mentors: Gongsun Guang and Yang Zhongqian
- Known Alias: Canggong
- Known Students: At least five
Questions readers ask
What is the source of the case histories attributed to Chunyu Yi?
The case histories were documented by Chunyu Yi himself after his pardon and were subsequently included in the 105th chapter of Sima Qian's Records of the Grand Historian.
Why was Chunyu Yi sentenced to punishment by mutilation?
He was arrested for malpractice between 176 BC and 167 BC, specifically due to his refusal to treat a patient.


