windproof effect: expelling wind, relieving exterior syndrome, relieving dampness and pain, and relieving spasm;
reed rhizome function: used for fever, polydipsia, vomiting due to stomach heat, cough due to lung heat, purulent discharge due to lung abscess, heat stranguria and astringent pain;
Huang Lian's efficacy: when rhizome is used as Chinese medicine, it has the efficacy of purging fire and detoxicating, clearing away heat and drying dampness, and can treat toxic heat, high fever and irritability, diarrhea and dysentery, aphtha, carbuncle and furuncle, etc.