What is the scientific name of the plant in the picture? The Hakka people call it "Di Wujin", a very precious Chinese medicine which is often used for "dispelling wind".
Da Wu Jin Herb Chinese name: 土细辛, alias: 毛乌金, 乌花草, 土细辛, 水细辛, 大细辛, 白三百棒. For the Aristolochiaceae plant long hairy fine Xin's whole grass or root, rhizome. The rhizome can be up to 50cm long, oblique rise or horizontal walk, above ground stem length 3-7cm. summer digging whole grass, remove the soil, placed in a ventilated place to dry. Born in mountainous areas under forests on shady and moist slopes. Distributed in Jiangsu, Anhui, Hubei, Sichuan, Guizhou and Yunnan.