The surface of this rhizome is red, and everyone calls it red root grass. Experienced old people in our local area will go to the wild to dig up this kind of astrology and boil water. It is very valuable. , known as blood-activating grass.

Its scientific name is Asteria sibirica, which is a perennial herbaceous plant belonging to the genus Loosestrife of the primrose family. It is also known as red root grass, field base yellow, and loosestrife. It often grows in low-humidity places such as ditch edges and field edges.

Loosestrife has a pungent, astringent, and mild taste. Oral administration has the effects of promoting blood circulation and regulating menstruation. It can treat irregular menstruation, excessive leucorrhea, bruises and other symptoms. It can be used externally to treat snake bites and other symptoms.