Shui Hanxia, a perennial herb. Tuber conical, elliptic or obovate, 1-2cm in diameter, the upper part is densely packed with most fleshy fibrous roots. Flowering April to May, fruiting June to July. Born at the edge of fields, mountain streams or low-lying wetlands. It is warm in nature, pungent in flavor; slightly toxic, and is mainly used for drying dampness, resolving phlegm, and relieving cough. It is distributed in Guangdong, Guangxi, Yunnan and other places, mainly in Guangxi. It is mainly found in Guangxi. It is usually found in fields, mountain streams or low-lying wetlands.