The ancients said: Anyone who is a son and does not read medical books is said to be unfilial. If you have a prescription but don't teach it to others, wouldn't you call it unkind? However, Fang's book is vast and voluminous, and there are countless of it. It is not easy to find and examine since he has not studied it in the past. Zhang Huan, the famous medical corps trainer of this dynasty, wrote "Ji Feng Pu Ji Fang" and another volume "Beware of Emergency". All the prescriptions are based on one's own taste, and the urgency depends on the person. Zhang Gong's intention can be said to be dedicated to helping others. I have been practicing medicine since I was a child, and I have learned all the skills and techniques of the ancients. I have lived in the country for forty or fifty years. Although I use this to maintain my health, I also use it to benefit others. My teeth are decaying now. Every time I think about giving medicine to benefit others, I can't do it. Among them, nothing can be more beneficial than the art of acupuncture and moxa. However, the needle is not easy to pass, and among those who rush to save people, Zhuoai is the first. Now, the methods that have been tried are compiled into a collection to spread them widely. There is no doubt that it will be given, it will be effective, it will return to life and death, and it will wonderfully capture the good fortune. There are a few difficult acupoints, which are mentioned in books, so that when the patient encounters the disease, he can be cured by following the method, and the generals can make up for it. Song Dynasty·Wen Renqi Nian Shu
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