Evil, external evil, is a description of virus invasion in traditional Chinese medicine.
In fact, this description of Chinese medicine is very reasonable.
Sometimes, the symptoms that cause fever in human body do not exist as a real virus, but as a chill.
Therefore, the cold that causes human fever at this time is also called cold evil in Chinese medicine.
The invasion of viruses and pathogens in traditional Chinese medicine are collectively referred to as external pathogens.
邪气，外邪，是中医对病毒入侵的一种描述。
其实，中医的这种描述是很有道理的。
有时候，导致人体发烧的症状，并没有实体的病毒存在，而是一种寒气。
所以，这个时候导致人体发烧的寒气，中医也称之为：寒邪。
中医把病毒性的入侵和邪气的入侵，都统称为：外邪。
