What stage follows the Qi stage in a Warm Evil pathogen progression?

In the progression of a Warm Evil pathogen, the Qi stage is characterized by the presence of symptoms such as fever, thirst, and a rapid pulse, indicating that the pathogen is affecting the Qi of the body. The next phase in this progression is the Ying (Nutritive) Level.

At the Ying Level, the pathogenic influence penetrates deeper into the body, affecting the nutritive Qi and the blood. This stage is associated with more severe symptoms, such as a high fever that becomes more pronounced, restlessness, and potentially a change in mental status. The presence of a thin, rapid pulse and a red tongue indicates heat in the blood and deeply seated pathology.

Understanding this progression is vital as it illustrates how pathogens can evolve within the body, shifting from affecting the superficial layers and defenses to implicating the deeper nutritive structures, ultimately affecting overall health and vitality. This is why the Ying Level follows the Qi stage in the context of Warm Evil pathogens.