Oolong tea is semi-fermented tea. There are many kinds and schools of oolong tea in China. The industry is often divided into "four representatives" according to its different origin - northern Fujian Oolong, southern Fujian Oolong, Guangdong Oolong and Taiwan Oolong. Oolong tea pays attention to rhyme, the so-called "fragrance has a different rhyme, not oolong", different soil and water breed different oolong charm, Anxi Tieguanyin "Guan Yin rhyme", Wuyi rock tea "rock rhyme", Phoenix single cluster "mountain rhyme" and so on.