What is the role of rhubarb and mirabilite external application

Rhubarb and mirabilite are two kinds of traditional Chinese medicine, rhubarb can remove dampness and yellow, purge heat and defecate, expel blood stasis and dredge channels, cool blood and detoxify, eliminate carbuncle; mirabilite can purge heat and defecate, moisten dryness and soften hard, clear fire and reduce swelling. Rhubarb and mirabilite powder are externally applied to the affected part, which has the effects of reducing swelling and dispersing masses, clearing heat and detoxifying, purging fire and softening hard, and can treat breast diseases, such as mastitis caused by milk stasis in women during lactation; It can be used for treating skin diseases such as furuncle, abscess, ulcer, and nameless swelling; internal diseases such as appendicitis; external application of rhubarb and mirabilite powder; and superficial hematoma at abdominal incision or hematoma in pelvis after obstetrics and gynecology surgery.