【 Material selection traits 】: The rhizome is short and thick, and sometimes there is residual stem base at the top. Several, long cylindrical, slightly curved, some branched and have whisker like fine roots, 10-20 cm long, with a diameter of 0.3-1 cm. The surface is brownish red or dark brownish red, rough, with longitudinal wrinkles. The outer skin of the old roots is loose and often appears purple brown, often flaking in the form of scales. The texture is hard and brittle, with loose cross-sections, cracks or slightly flat and dense. The skin is brownish red, and the wood is grayish yellow or purple brown. The vascular bundles are yellow white and arranged radially. Mild qi, slightly bitter taste. The cultivated product is relatively robust, with a diameter of 0.5-1.5 centimeters. The surface is reddish brown with longitudinal wrinkles, and the outer skin is tightly attached and not easy to peel off.

 

【 Product Description 】: Brown yellow powder or brown red powder