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Wherever plagues (epidemic diseases) prevail, there is always foul and noxious qi fermenting and circulating within. Observe that when entering an area affected by plague, bluebottle flies are frequently seen everywhere, gathering in groups of hundreds or thousands.
Bluebottle flies are creatures fond of filth, and their sense of smell is extremely acute; they detect odors imperceptible to humans. Thus, as soon as human excrement is discarded, the flies immediately congregate. From this, we can infer that places where flies gather are precisely where the pathogenic qi of plague and filth accumulates. Furthermore, human filth qi often acts in conjunction with and reinforces this external foulness. In years of famine and disaster, corpses litter the fields, and putrid odors rise into the sky. Humans subjected to this miasma find it unbearable. Moreover, those who assist the sick and bury bodies on the roadside encounter a level of filth that is overwhelming and insurmountable. If people daily accustom themselves to these two types of qi, how could they avoid falling ill? If one does not consider methods to eliminate them, even if medicinal decoctions are taken, they will be ineffective. Even if they were effective, sparing only one or two individuals, the pervasive and spreading filth qi would continue to flourish without end. Is this not a matter for grave concern? Therefore, several prescriptions have been formulated and listed below. If, in plague-stricken areas, these substances are indeed burned or worn as amulets, the latent dissipation of filth qi will occur imperceptibly, and severe illnesses will suddenly resolve.

Chu Hui Jing Wen Dan (Purifying Filth and Pacifying Plague Pill [New Prescription Formulated by Author]. Grind the herbs into powder and place approximately 2-3 qian inside a crimson silk sachet. Do not use too little. Distribute among family members to wear; frequent inhalation of the aroma facilitates recovery for the already ill and prevents infection for the healthy.)
Cangzhu Rhizoma Atractylodis Macrocephalae (2 qian), Jiangzhenxiang Lignum Dalbergiae Odoriferae (2 qian), Chuanxiong Rhizoma Ligustici Chuanxiong (2 qian), Dahuang Radix et Rhizoma Rhei (2 qian), Hutougu Os Tigris (Tiger Skull Bone), Xixin Herba Asari (2 qian), Futoumu Wood of Axe Handle Insertion, Guijianyu Ramulus Corni Officinalis cum Spina, Taoxiao Fructus Persicae Aridus (Dried small peach remaining on tree), Baitanxiang Lignum Santali Albae (2 qian), Yangzhizhu Fructus Rhododendri Mollis (2 qian), Qianghuo Rhizoma et Radix Notopterygii (2 qian), Gancao Radix Glycyrrhizae Uralensis (2 qian), Caowu Radix Aconiti Kusnezoffii (2 qian), Bencao Rhizoma Ligustici Chuanxiong (2 qian), Baizhi Radix Angelicae Dahuricae (2 qian), Jingjie Herba Schizonepetae (2 qian), Gangetpi Cortex Puerariae (2 qian), Shanjiia Squama Manis (2 qian), Lingyangjiao Cornu Saigae Tataricae (2 qian), Hongzao Fructus Jujubae (2 qian), Ganjiang Rhizoma Zingiberis Recens (2 qian), Guizhi Ramulus Cinnamomi Cassiae (2 qian), Fuzi Radix Aconiti Lateralis Preparata (2 qian), Duzaohui Ash of Furnace Hearth (2 qian), Chuanjiao Pericarpium Zanthoxyli (2 qian), Shannai Bulbus Kaempferiae Galangal (2 qian), Gansong Rhizoma Nardostachyos (2 qian), Paicao Herba Polygalae (2 qian), Guipi Cortex Cinnamomi Cassiae (2 qian). (All at 1 qian each, ground together into coarse powder.)
Mingxiongsong Realgar (2 qian), Zhusha Cinnabaris (2 qian), Ruxiang Resina Olibani (1 qian), Moyao Resina Myrrhae (1 qian). (These four ingredients are separately ground into fine powder and then mixed together.)

Cang Jiang Fan Hun Xiang (Purifying Filth Reviving Soul Incense [Formulated by Author])
Cangzhu Rhizoma Atractylodis Macrocephalae, Jiangzhenxiang Lignum Dalbergiae Odoriferae. (Equal parts.)
Grind all into powder, mix with Artemisia argyi leaves, roll into tubes using cotton paper, and burn to dispel filth and eradicate plague.