TCM has many interesting theories, philosophical concepts are implemented throughout, and some of the concepts of wellness can be directly applied to life. Our patients are mainly researchers from the Chinese Academy of Sciences, who are highly educated and many of them are interested in TCM. Some of them are over 70 years old and even come to us to ask questions about TCM, which makes me respect their spirit of seeking truth and learning. Many patients ask “Am I Yin or Yang deficient?” as the first question. The word “kidney deficiency” is also “known to everyone on earth”, so here I will talk about kidney deficiency as a TCM evidence type. Kidney deficiency quickly reminds us of common symptoms such as back pain, lumbago, frequent urination, cold hands and feet, impotence, etc. But did you know that in Chinese medicine, kidney deficiency can also be the main cause of cough? Recently, I met such a patient. The patient, a woman in her 60s, told me at the first consultation that she had bronchitis every spring and autumn, and that she had a cough for two to three months, which was very bad in the evening and sputum-rich in the morning. At the second consultation, the patient said that his cough had improved and he basically did not cough during the day, but only at night, and the effect was not more effective. When the patient came back, he said that the symptoms of coughing at night and phlegm in the morning had not improved after taking these few doses of medicine, and that they were not as effective as the first three doses of medicine. I couldn’t help but think that if the problem was only phlegm-dampness, the patient would basically get better with this treatment, but there must be another reason. At this point, the patient reminded me with a remark, saying that she had a lot of phlegm in the morning, and her mouth tasted salty when she spit, which was unpleasant. In the Five Elements theory of Chinese medicine, the heart, liver, spleen, lungs and kidneys all have their own corresponding flavors, such as bitter for the heart, sweet for the spleen, pungent for the lungs, sour for the liver, and salty for the kidneys. I thought this was a hint that the patient had a deficient kidney, and that at the time of spring and autumn, when the climate changes from cold to warm, he could easily feel external evil and become ill. When the patient came back, he said that he was basically cured after the first dose of medicine, and that he had no cough and no phlegm, so he was very happy to see immediate results. I was very happy to see that the patient was well, and I also realized that there are some wonderful things in the theory of TCM, which can be described as miraculous when applied properly. Since the New Culture Movement, the proposition of whether TCM is scientific or not has been a topic of discussion among Chinese people from time to time. I personally believe that it is not that TCM is bad per se, but that we who study TCM should try to inherit and develop it, to remove the falsehoods and keep the truth. The West has increasingly agreed with TCM theory, and with the progress and development of mankind, the current science is not the only criterion to judge the right and wrong of human actions, and TCM theory will certainly be re-recognized and used, which is also the responsibility of our TCM workers. This is a small experience of my work about kidney deficiency. In the words of Mao Zedong, “Chinese medicine is a great treasure house”, and only if we practice more and summarize more, we will slowly progress.