Traditional Chinese medicine believes that lung governs fur. Hair is the shallowest tissue of human body, which is closely related to the lungs. This is because fur is heated by body fluids delivered by Wei Qi and lungs, and Wei Qi controls the opening and closing of sweat pores to regulate breathing. If foreign pathogens invade, they will often invade the lungs from fur, leading to aversion to cold, fever, stuffy nose, cough and even asthma. If the failure of lung qi deficiency can also be manifested as dry moss, then there is also a saying that the moss exceeds the lung.
Enlighten the nose: lung qi leads to the nose, and the nose is the channel for breathing. Lung qi leads to the nose, and the nose knows the smell. If foreign pathogens invade the lungs, nasal congestion and runny nose may occur. Lung heat is very serious, and symptoms such as nasal wing agitation may occur. Therefore, the nose is the opening of the lungs.