Considering the climatic characteristics

the symptoms manifestation and the virus specificity

this coronavirus disease 2019（COVID-19） epidemic belongs to the category of "cold-damp epidemic". "Stasis and heat entering ying（营）" is often seen in the critical cases and is a special pathogenesis in the development of "cold-damp epidemic"; when pathogenic qi of cold and dampness invades patients with damp stasis or damp-heat constitution

and cold-damp accumulates in the body for a long time

leading to the formation of blood stasis and heat in the body. After the combination of blood stasis and heat

the disease is worsen and lingering

having triple pathological characteristics of stasis-formulating

heat-dissolving and ying-entering

and involving many organs. There is an obvious difference between cold-damp epidemic and warm disease in the pathogenesis of "stasis and heat entering ying". Although its pathogenesis evolves in many ways

cold-damp epidemic also has the commonness of "stasis and heat entering ying"

which can be identified from macro-syndromes and micro-indexes. The treatment should consider the whole process of disease development

recognize the state and adjust the target

cool ying and dissolve stasis

support vital qi and contain yin

and choose the prescription based on syndrome differentiation.