Etiology and Pathogenesis Invasion of Failure of the lung by the lung to wind cold disperse Dysfunction Exopathogenic of the lung factors Invasion of Failure of in dispersing and the lung by the lung to wind heat descending descend Obstruction ofthe lung by phlegm The rising of Endopathogenic damapness lung qi factors Liver fire attacking the lungs CoughEtiology and Pathogenesis Exopathogenic factors Endopathogenic factors Invasion of the lung by wind cold Invasion of the lung by wind heat Failure of the lung to disperse Failure of the lung to descend Obstruction of the lung by phlegm damapness Liver fire attacking the lungs Dysfunction of the lung in dispersing and descending The rising of lung qi Cough