1, the efficacy and role of the wood: taste sweet, salty, slightly astringent, slightly odorless, flat, to the heart, liver and spleen meridian, with blood circulation and eliminate blood stasis, swelling and pain. In Chinese medicine, it is often used in the treatment of bruises and pain, such as bruises, menstrual cramps and pain in the heart and abdomen.

2, contraindication: excessive menstruation and pregnant women should not use.

3, sumac is the dried heartwood of the leguminous plant sumac, mainly produced in Southeast Asia, in China is mainly distributed in Guangdong, Guangxi, Yunnan, Hainan, Fujian, Sichuan, Guizhou and other places, of which, Guangxi is the main production and cultivation area.