What does the common cold invasion mean?

Cold is a pathogenic factor caused by wind, which is characterized by rapid onset and many changes.

Wind is the main gas in spring. The pathogenesis of cold is common in spring, but it can occur all year round.

"False evil is a thief's wind, so it is sometimes avoided", which means that all external evils in nature that can make people sick should be avoided in time. According to Huangdi Neijing, cold is the main pathogenic factor among many external causes.

In fact, wind is a pathogenic factor, that is, many different pathogens, just because they cause corresponding lesions, so they have taken a class name. In this way, if the cold of traditional Chinese medicine is studied by modern theory, it is a similar symptom group caused by viruses, bacteria and other pathogens. This is what people usually call "occasionally feeling cold"