A month. Reusing Ophiopogon japonicus as monarch medicine can nourish lung and stomach yin and clear deficiency fire. Pinellia ternata is a ministerial medicine, which can reduce adverse reactions and resolve phlegm. It can be used with japonica rice, jujube and licorice to tonify stomach qi. Ginseng can tonify the middle qi, and the cooperation of these drugs makes the middle qi healthy, and the body fluid can be transported to the lungs, thus nourishing the stomach and moistening the lungs, and playing the role of nourishing the soil and generating gold. Therefore, it is necessary to take Maimentong decoction.