Tieguanyin is both the name of the tea and the name of the species of tea tree, is a kind of oolong tea, is a semi-fermented tea, which is mainly produced in Anxi County, Fujian Province, Iron Goddess of Mercy, Iron Goddess of Mercy is also the best of the oolong tea.

Tieguanyin, dicotyledonous phylum Camellia sinensis, belongs to the green tea category, China's traditional tea, is one of China's top ten famous teas, native to Fujian Quanzhou City, Anxi County, Xiping Town, found in 1723-1735, Tieguanyin contains a high level of amino acids, vitamins, minerals, tea polyphenols and alkaloids, there are a variety of nutritive and medicinal components, with health care functions.

The branches of the tree are thick and hard, the leaves are looser, the buds are less thick, between green tea and black tea, belonging to the semi-fermented tea, unique "Guanyin rhyme", fragrant and elegant, after brewing the natural orchid fragrance, "seven bubbles have the reputation of the remaining fragrance".

Anxi County, Fujian Province is the hometown of the world's famous tea, but also the birthplace of the national famous oolong tea, but also the base of oolong tea exported from Fujian Province counties and cities. Anxi has a long history of tea production, and is blessed with natural conditions and excellent tea quality.

The Tieguanyin currently circulating in the market is mainly divided into three major categories:

1, clear flavor type Tieguanyin (positive flavor, eliminating the positive, eliminating the green, dragging the acid), Anxi locally called green tea.

2, strong flavor type Tieguanyin (that is, charcoal-roasted Tieguanyin), Anxi locally called ripe fire tea.

3, aged flavor Tieguanyin (Tieguanyin old tea).