Panax of four leaves, also named YangRu(breast of sheep) and panax of Mount Taishan, is a famous herbal medicine. It belongs to Campanulaceae family and grows in the crevices of rocks, moist valleys and shady braes. It has some 1 meter long tendril, single blossom and four symmetrical leaves, for that it is called panax of four leaves. This kind of panax is as same size as carrot with a coarse apricot skin. It helps to bring down a fever, release a cough and make human sturdy.