Cold cough
Cough due to deficiency and cold is caused by the six external pathogens and internal injuries to the internal organs, which affect the lungs and cause noise and phlegm. See "Suwen·Five Zang Organs Formation Chapter". "Suwen Bingji Qi Yi Bao Ming Ji" says: "Cough is no phlegm but has sound, which is caused by the injury of lung qi and the lack of clarity; cough is no sound but has phlegm, which is caused by the movement of spleen dampness. Cough is caused by the movement of phlegm and sound, which is caused by the injury of lung qi and the movement of spleen dampness, and cough becomes cough."