... Hance is a species of tree in the genus , native to mainland China.In China, the "sterculia lychnophora" or "poontahai" is used ... tea is believed to reduce the "hotness" of the body, and nurture the body.According to the Chinese medicine, the use of "sterculia lychnophora" ... to cure sore throat, to counteract toxicity, and to relax the bowels. Therefore, when a person has symptoms such as hoarseness ...