You should not blow a fan after cupping, because after cupping the pores of the body are in an open state, and if you blow a fan at this time, it may lead to wind evil into the body. If the body is weak, it may cause symptoms of the lung and the body’s health and cold, such as nasal congestion, sneezing and runny nose. In severe cases, it may affect the lung’s function of propagation and purification and cause symptoms of wind-cold cough, such as cough, itchy throat, thin and white phlegm, or even fever. For people with sensitive constitution, hives and itchy skin may appear after blowing on the fan, and even severe symptoms such as difficulty in breathing and chest tightness may occur. In the case of elderly patients, the wind may cause joint pain and numbness after entering the body.