On this point, in the first volume of the "Middle Treasury Scripture" it is said: "Lung Qi connects to the nose. In harmony, one can discern fragrance and foulness. In cold, one tends to cough; in excess, the nose runs clear nasal discharge."
Patients with pulmonary deficiency often have congenital insufficiencies, weak physiques, postpartum body weakness, or post-illness lack of nourishment, leading to pulmonary deficiency, inability to protect the exterior, loose skin pores, disharmony of Ying and Wei, and are easily invaded by wind-cold pathogens, resulting in nasal discharge and sneezing.
