[Character] : Root conical, length 10 ~ 20cm, diameter of 2 ~ 2.5cm. Surface gray -brown, with transverse processes of the stomata , the top of the stem scar depressions . Hard, white section , foot powder , skin brown oil ministry point clouds . Gas aromatic , spicy, bitter.

[Taste] : warm, spicy
[Indications] : rheumatism , blood and pus , myogenic pain. For headache , toothache, Biyuan , intestinal wind anal fistula , vaginal discharge , ulcer sore , itchy skin