Insufficient bottom air when speaking, i.e., low voice or reluctance to speak, is typical of lung qi deficiency, which is mainly manifested as less qi and lazy speech and weak respiratory qi for the following reasons: 1. lung qi loss: usually patients are in the process of treatment or untimely treatment, which can easily lead to lung qi loss, in addition to speaking, coughing and sputum excretion, etc. can also easily deplete lung qi; 2. lack of exercise: if there is no disease state, lack of exercise can also lead to symptoms such as weakness of speech or shortness of breath. In the absence of disease should be more exercise, through effective exercise, so that the lung muscles are tight, full of elasticity and tension, in order to make speech with strength. In China, there used to be the practice of qigong, which trains the muscles of breathing. When treating diseases, it is important to avoid depletion of the breath. Usually when there is heat evidence, cold and heat-clearing drugs are used, which can clear heat but also cause depletion of the body’s yang energy. Therefore, the formula needs to be rigorous when using medicines, and the herbal formulas should help and refer to each other. In Chinese medicine, the main complementary and adjuvant ingredients, i.e., multiple ingredients in the prescription need to cooperate with each other to reduce the damage to lung qi caused by cold medicines. Since excessive coughing, coughing up phlegm, throat-clearing movements and talking can also deplete lung qi, treatment should reduce ineffective excessive coughing, but not stop it. The lung cough is only to help expel phlegm, so to reduce the depletion of lung qi from coughing, one should help dissolve phlegm and stop coughing once the phlegm is expelled, which also reduces the depletion of lung qi.