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Chao Yuan-fang (AD 550-630, the first year of Liang Dabao in the Southern Dynasty to the fourth year of Zhenguan in the Tang Dynasty) was the author of Zhubing Yuanhou Lun, a representative work on the study of the cause of disease and description of syndromes in my country.

Chao Yuan-fang was a doctor of imperial medicine during the Daye period of Sui Dynasty (605-617). Zhubing Yuanhou Lun was written by Feng Zhao. The book is devoted to the causes and syndromes of the disease and contains no prescriptions. It summarizes the medical experience since the Wei and Jin Dynasties and is rich in content. It has earlier and more detailed records on the observation and understanding of diseases. It discusses the origins of various diseases and the essentials of nine pulse-takings in detail, and describes in detail the causes and symptoms of various diseases such as internal, external, obstetrics and gynecology, pediatrics, and five sense organs. In addition, it also includes diagnosis, health care and conduction exercise. It is a valuable document in my country's medical heritage.

Chao left his rich experience in medicine to future generations through his book Zhubing Yuanhou Lun. His understanding of the causes of many diseases has been discussed in detail very early and is quite authentic. He has unique insights into the clinical diagnosis of many diseases. Regarding the discovery of scabies, Chao said: "In patients with wet scabies, the skin of the sores is thin, and juice often flows out after being scratched. There are also worms on them. People can often pick them out with a needle, and they look like snails in the water." pointed out. He discovered that the source of scabies is scabies. This understanding is based on his in-depth and detailed field observations. It is scientific and is a big step forward compared with the previous belief that the disease was caused by "dampness evil".

Regarding the identification of Chinese Taxillus Herb worms in the digestive tract, Chao said: "The white taxillus herb grows one inch long...it will proliferate section by section, and gradually grow up to four or five feet." Here you can see what he is referring to. It's a tapeworm. As he said, it's "an inch long, white in color, small and flat in shape." This is where the name of the tapeworm comes from. Because we can recognize the white worm (taenia) from its shape, we can distinguish roundworms and pinworms as two different insects from the white worm. He also pointed out that the disease is related to eating raw beef or fish.

Regarding the understanding of dysentery, he believes that there are seven types of dysentery: red and white dysentery, red dysentery, bloody dysentery, pus and blood dysentery, hot dysentery, chronic dysentery, recurrent dysentery, etc. Compared with the previous "dysentery", "dysentery", etc. The formulation is a big step forward.

Concerning pulmonary tuberculosis, he not only described the symptoms similar to Ge Hong's, but also gave specific names of "consumptive disease" and "steaming bone fever". These disease names are still used today.

As for goiter, 1,400 years ago, he discovered that the disease is closely related to drinking water. He pointed out: "Daily drinking of spring water in certain places will cause goiter." Although in pregnancy Under the circumstances, it was impossible for him to know the relationship between goiter and iodine, but this discovery was already very extraordinary.

Concerning nyctalopia, Chao called it nyctalopia. He believed that this disease is like a bird, which can see things very clearly during the day, but can't see anything at night. Current scientific practice has proven the correctness of his understanding.

In terms of obstetrics and gynecology, Chao proposed the indications for artificial late abortion for the first time. He proposed: "After pregnancy, if a woman is thin or has disease, she will not be able to nourish the fetus, and it will be harmful to the body of the pregnant woman. You can consider removing the fetus." Although this was a last resort method for the safety of pregnant women, in an era when women's social status was low, this argument undoubtedly played a positive role in protecting women's health.

In terms of surgery, he made a relatively detailed record of the intestinal anastomosis operation. This not only shows that Chinese medicine was able to perform such operations 1,400 years ago, but also shows that Chao himself was very skilled in surgery. achievements.

In Chao's Zhubing Yuanhou Lun, there is also a record of teaching people to develop the good habit of gargling after meals. It not only pointed out the relationship between dental disease and oral hygiene, but also included how to let people Develop good hygiene habits and a prevention-oriented mindset. For another example, he said: "All kinds of meat, if wet with fistula disease water, will be poisonous and cannot be eaten." He also said: Five animals that die of themselves or die of pestilence are poisonous and cannot be eaten. Although these seem to be common sense issues now, at the time, it was unknown how many cases of food poisoning had accumulated before it became a theoretical understanding! It should be said that this understanding occupies an important position in the history of preventive medicine in the motherland.

As for the formation of allergic skin disease~~lacquer sore, he believes that it is closely related to the quality of people. People who are not intolerant to paint will develop lacquer sore after being exposed to paint; people who are naturally resistant to paint will still develop lacquer sore all day long. No harm will come from contact.

Looking at the above items, it is not difficult to see that Chao Yuan-fang has profound attainments in medicine and has made significant contributions to the cause of disease and pathological diagnosis of Chinese medicine. These achievements cannot be achieved without a pragmatic attitude towards scholarship, without in-depth and meticulous investigation and research, and without a spirit of dedication to science.

Chao's "General Treatise on the Causes and Symptoms of Diseases", abbreviated as Zhubing Yuanhou Lun, "Chao's Causes of Diseases", "Treatise on the Causes and Symptoms of Diseases", etc. It was written in 610 AD. It has fifty volumes and is divided into sixty-seven sections and one thousand seven hundred and twenty sections. It details the causes and symptoms of various diseases and discusses the diagnosis and treatment of the diseases.