The world-famous Assam black tea and ruby black tea are all large-leaf species. The small-leaf black tea produced by the high mountain native species called Green Tip oolong (Chin-shin Oolong) and got its named for its small leaves. Tea leaf is with tight twist-shape and have white bud tip. Tea liquid is bright red color, on the palate is rich and mellow, without bitterness. Have strong and sweet aftertaste.