A young male patient came to the clinic. He complained that his routine was disrupted a week ago due to family troubles, and that he did not rest or eat well for a few days, and was always sleepy and tired, but could not fall asleep at night until after midnight. After checking the pulse and looking at the tongue, combined with the symptoms, we considered that it was due to the obstruction of the Qi flow of Shaoyang generation and intended to use Xiao Chai Hu Tang to restore the normal rise and fall of Qi flow. However, there is a problem here, that is, we need to see how the patient’s base is. Why is that? If we use the sprouting of grass and trees as a metaphor for the growth of qi, can it sprout just by having spring? Of course not, there needs to be fertile soil and sufficient water, otherwise, although the grass can break out of the ground, it will not be able to thrive. So I asked the patient if he had dry eyes, and the patient replied in the affirmative. Since the liver opens the eyes, a deficiency of liver yin will lead to dry eyes, so I added to the prescription products that nourish liver yin. Then, the patient said, “Doctor, I have one more question to ask, and I said please go ahead. The patient said that before he came to see the doctor, he used to buy the medicine Shu Liver Pill at the pharmacy for treatment. After the first dose, he felt discomfort in his right side, and after the second dose, the symptoms became more pronounced. The patient wondered if there was an organic problem in the internal organs of the liver and gallbladder. I said no. The side effect of qi-activating drugs is to harm yin, the same reason as wind energy overcoming dampness. If a person with liver yin deficiency takes a lot of qi-activating drugs instead, there will be more serious loss of yin. From this case, we can see that one should not be ignorant of medicine, and the understanding of medicine is more or less a guide for our life. When we don’t know very well, moreover, we can’t use medicine blindly to ourselves, and all medicines need to be taken under the guidance of a doctor, otherwise, it will be easy to have problems.