Tie Luo Han received its name long before any of the other traditional teas of Wuyi, in the Song Dynasty. It is the earliest of all known Wuyi teas. It originates in the Nei Gui Can of Hui Yan, Wuyi, Fukien Province, China. The tea trees are planted on a long, narrow belt beside a small ravine with cliffs on both sides. The trees arc therefore taller and bigger than the other varieties, with a half-open shape and crowded branches. The leaves are also elliptical, though slightly longer. They are dark green, bright and thick with dull, shallow teeth around the edges. The buds are reddish-purple with a lot of hairs. They are also very fertile, yet tender. The diameter of the corolla is 3.5cm and shines brightest in the middle of April. The buds yield a very high harvest, and are the raw material for this tea. Because Tie Luo Han is almost all bud, the tea is sweeter and thicker than the other kinds of Wuyi tea. It has a rich fragrance with a very fresh aftertaste that quenches the thirst and offers a very characteristic sensation (cha yun) of cleanliness in the mouth.