... . Born in the valley, stream or forest. Main products of Guangdong, Guangxi; a cultivation. Collect and process all year round, ... dredging, removal of fibrous roots, clean, slightly drying to Liu Qicheng dried, ... Chemical Composition pre-test root contains anthraquinone, flavonoids. Weixin Tropism of flavor, Gan; sex tepid. Owned by the kidney, the ...