1. The key to learning medicine is not to understand the principles first, then to differentiate syndromes, and then to use medicine. The reason is unclear, how to distinguish the syndrome, and what is the use of medicine

2. Without reading "Erya", it is impossible to understand the secret meaning of "Six Classics"; without reading "Compendium of Materia Medica", it is impossible to understand "Su Wen" The secret of treating diseases.

3. It is difficult to learn about things, but you have to learn about medicine; it is especially difficult to use medicine, but you have to learn about physical properties.

4. Medication is like torture. Punishment cannot be mistaken, mistakes can lead to human life. The same is true with medication. One mistake can mean the difference between life and death. If a doctor mistakenly knows the medicine and the medicine is appropriate, then it should be effective.

5. As diseases change, so do medicines. If you can understand their smells carefully, you can pick one or two of the hundreds of medicines that can be used to stimulate the mind. Otherwise, if there are too many, it will cause dizziness, and all medicines can hurt people.

6. In modern times, doctors are themselves doctors, and medicines are medicines. Those who practice medicine only distinguish the nature and flavor of the prescription, and do not know the authenticity of the medicine. Those who sell medicine only know how to look good in appearance, but not how to make the medicine properly. As for whether the place of delivery is authentic or not, whether the pills, powders, ointments, and elixirs follow the ancient times, the doctors neither investigate nor the pharmacists report. They go their separate ways and insist on not changing. How can there be any progress?

7. "Rhubarb has no merit in saving people, and ginseng has no fault in killing people." Although Xu Lingtai has a special article on the harm caused by ginseng abuse in "On the Origin of Medicine" collected and compiled by the Medical Education | Education Network, it is not as loud, powerful and catchy as this proverb. This sentence uses rhubarb as a comparison, which is extremely sharp and unforgettable. It is also the best sobering agent for quacks who abuse supplements. In the past, doctors of all ages would loudly object to certain treatment shortcomings, often using the form of aphorisms.