The extract was irregular short columnar, fusiform or massive, slightly curved, 1 ~ 3cm long, 0.5 ~ 1cm in diameter. Surface dark brown to grayish black, with irregular wrinkles and fibrous roots or fibrous Chemicalbook marks. The apex often stems and leaves residue, outside by several layers of yellow-brown sheath-like scales. Quality is soft, easy to break, section of white skin, wood yellowish white or yellowish brown, slightly radiating. Gas micro, sweet, micro bitter.