Tieguanyin is the supreme quality of Oolong tea, and its quality characteristics are: the tea leaves are curled, thick, round and heavy, uniform in color with a sandy green hue. Its overall shape resembles a dragonfly's head, spiral body, and frog's legs. After brewing, the tea has a golden-yellow infusion, rich and bright like amber, with a natural and fragrant orchid aroma. Its flavor is mellow, fresh and sweet, leaving a long-lasting aftertaste. It is commonly known as having "..." (perhaps referring to a specific local term or nickname that wasn't fully provided in the original text).