it's the treasure of Chinese rare herbal ,contains 20 kinds of saponin,17 kinds of amino acid and 11 kinds of trace element,3 kinds of anticancer activity selenium and crude protein.it can be used to entertain distinguished guests as the second top grade drinking tea.it's useful to  clearing heat diminish inflammation,smooth liver,detoxify be good for pharynx ,reduce blood pressure, dizziness, insomnia, dazzled, tinnitus, acne, whelk, acute laryngitis etc .