Wa people are an ethnic group living in Yunnan Province of China. They often use various local herbs to treat diseases. There are many differences between the Wa people and other ethnic groups in the use of herbal medicines, such as Tongmali jade belt grass, which is commonly used by other ethnic groups to treat rheumatism and injuries caused by falls, while the Wa people use it to treat dental ulcer . Bear bile grass is commonly used by other ethnic groups to treat gastroenteritis, while the Wa people use it to treat lung disease, which makes the Wa people make their own unique herbal medicine.