The first sentence is "If a person does not have enough reason, he cannot learn medicine; if a doctor does not have enough reason, he cannot use medicine." This sentence comes from "Six Principles of Encouragement to Medicine" written by Chen Shiduo in the Qing Dynasty. The extremely simple words tell us a very profound and serious truth: Those who study medicine must have a rigorous scientific attitude and the spirit of exploration. Without the tenacity to "get to the bottom of things", you will not be a good doctor or even a doctor. The second sentence is "Husband's medicine is used, and life is at stake." These nine words are like sharp swords hanging in the sky, always warning every medical staff of their morality and responsibility. As a doctor, any treatment or medication is related to the life and health of the patient. Therefore, any diagnosis and treatment action must be based on the safety and health of the patient. In the process of treatment, science must be respected, "treat according to the disease" in strict accordance with medical laws, and every effort should be made! The last sentence is, "You can't be a doctor if you study without applying for the disease; you can't be a doctor if you don't study for the disease." This talks about the relationship between books and application, theory and practice. Medicine is a science, and it is also an experimental science summed up after countless failures of generations of ancestors. It is a science that is constantly developing. Therefore, people who study medicine must update their knowledge through continuous learning, "live until you are old, learn until you are old". Only by increasing your skills in "reading" and "clinical diagnosis", and keeping up with the pace of medical development, can you be "calm and relaxed" "Only by properly coping with various unpredictable diseases can we truly be a patient's trusted guardian of health!