Sun Simiao advocated that everyone should know medical skills, so as to "treat the diseases of relatives of the upper class, save the poor of the lower class and preserve the health of our middle class". He saw that the prescriptions were "rich" at that time, and it was difficult to see a doctor in case of acute diseases. After he found a doctor, he decided to rewrite the medical book and write two simple and practical prescriptions, each with 30 volumes, meaning "human life is the most important, and there is a precious daughter", named "just in case." These two prescriptions are the fruit of Sun Simiao's painstaking efforts all his life, and they have an important position in the medical history of China.
Qian Jin Fang Yao is Sun Simiao's clinical experience of more than 50 years, which is combined with medical classics of past dynasties. The contents of the book include the basic theory of traditional Chinese medicine and the diagnosis, treatment, acupuncture, dietotherapy, prevention, hygiene, etc., and put gynecological diseases and child health care in an important position. Qian Jin Fang Yao was written with nearly 30 years' experience in his later years. As a supplement to money entering Fang Yao, the most prominent contents are herbs, typhoid fever, stroke, miscellaneous diseases and sores. The book contains more than 800 kinds of drugs used at that time.
The Secret of Foreign Taiwan Province was written in 752, with 40 volumes, 1, 104. It is a comprehensive medical work, including diseases and medical prescriptions of various subjects. Although the author Wang Tao is not a professional doctor, he finished this book because "he was sick when he was young, and he worked as an official in Tang Ting for decades and studied a lot of medical books." Because most prescriptions were lost before the Tang Dynasty, the Secret Recipe of Waitai preserved a large number of lost prescriptions for future generations, which is of considerable value in the history of medicine.