Guoshi Zhen (Old Corpse Pillow), obtained from ancient tombs, when boiled in water and taken orally, can eliminate three types of diseases: it treats Shizhu (a contagious, lingering consumptive disease) stagnating deeply within the body; however, if taken in a single large dose, it may cause the Hun Qi (ethereal soul energy) to fly away and scatter. It also treats Shi Hui (stone-like intestinal parasites) and Jianpi (hard abdominal masses) within the abdomen, which must be expelled using substances that dispel evil spirits. Furthermore, it treats conditions where pathogenic factors invade the Liver Meridian, resulting in eye pain and visual hallucinations of wangling (phantoms/demons). When no other medicines are effective in expelling these pathogens, only this item can hook out and remove them.