Strange herbs

Yemingsha, dried bat excrement, is used to cure eye illnesses such as glaucoma and inflammation.

Renzhonghuang is processed licorice root that is put into bamboo knots and sunk in manure pits for some time. It is intended to clear heat and resolve blood stasis.

Goubao, stones taken from dogs' stomachs, kidneys and gallbladders, is used to relieve depression and is a major ingredient in medicines that treat gastric and esophageal cancer.