Obtained from tombs, boiled in water and taken orally. It can eliminate three diseases, achieving complete efficacy. It treats *Shizhu* (corpse transmission, a chronic consumptive disease caused by ghostly qi) stagnating within the body; a single dose causes the soul qi to fly away (spiritual dispersion, detaching from the body).
It treats *Shihui* (stone roundworms, where ascaris worms harden into masses) causing firm accumulations (*Piji*) within the abdomen; it is necessary to use ghostly substances to drive them away. It also regulates pathogenic qi invading the Liver Meridian, thereby causing eye pain and seeing *Wangliang* (hallucinations of demons); no other medicine can dispel this, so this substance is used to hook and remove it.
(Chen Jiamo) Commentary: Although these three diseases differ, all are cured using a dead person's pillow. Why? The so-called *Shizhu* is ghostly qi. It lies dormant without manifesting fully, causing bodily stagnation. When treated with this, the soul qi flies away and no longer attaches to the body, resulting in spontaneous recovery. *Shihui*: After medical treatment, an accumulation forms, and the roundworms become hardened; worldly medicines cannot dispel them, so it is necessary to use ghostly substances to drive them out, after which they dissipate. Furthermore, when pathogenic qi enters the Liver, it causes eye pain and visions of ghosts; it is necessary to immediately use ghostly substances to hook and extract them for removal.