Zheng Qinan's True Story of Medical Principles was written in Tongzhi for eight years in Qing Dynasty (1869), which is the foundation work of Vulcan school. The book "Medical Principles" was written in the 13th year of Tongzhi in Qing Dynasty (1874), which gave birth to the true story of "Medical Principles". Zheng is also the author of Treatise on Febrile Diseases. According to the National Catalogue of Traditional Chinese Medicine Books, during the period of 1869- 1940, three kinds of medical books in Zheng Qinan were published many times, and 30 versions of * * * were circulated internationally. At the end of the Qing Dynasty and the beginning of the Republic of China, there were so many versions published and the frequency was so high. Apart from classic medical books and Chen Xiuyuan's works, it is rare for medical books to be so popular and spread. 1962 Yunnan college of traditional Chinese medicine reprinted the true biography of medical theory and the mirror of medical law as teaching reference materials; 1987 and 1990, Sichuan Bashu publishing house successively proofread and published the true story of medical science and the medical court (Tang Buqi); 1993, China Traditional Chinese Medicine Publishing House proofread and published The True Story of Medical Science and The Court of Medical Law (Yu Yongmin et al. ); 1994 Beijing Ancient Books Publishing House photocopied and distributed the above two books; 1996 Sichuan Bashu Bookstore published Interpretation of Medical Books (Tang Buqi), including three works by Zheng. Zheng Qinan's Vulcan school of thought is legendary.
Other works of Vulcan School mainly include Treatise on Febrile Diseases by Zhu Weiju and Selected Medical Records by Zhu Weiju. Wu: Measles, New Notes on Treatise on Febrile Diseases, Wu's medical case, etc. Lu: Notes on medical books, synopsis of the Golden Chamber, Lu's medical thoughts, Lu's clinical experiment records, etc. Liu: The Treatise on Asthenia, Treatise on Cholera in Treatise on Febrile Diseases, Thirteen Prescriptions for Detumescence, Huayang Medical Theory, Lulu Medical Case, etc. Fan: Fan Liujing selected cases based on syndrome differentiation, etc. These are all important materials for studying Vulcan thought.