Dark tea is not Pu'er tea. Dark tea and Pu'er tea are two different types of tea. Dark tea is produced in Yiyang, Hunan, Xianning, Hubei, Wuzhou, Guangxi and other places. It is made from black tea, which has been cured and rolled. Pu'er tea is produced in Xishuangbanna, Lincang, Pu'er and other places in Yunnan. It is made from Yunnan large-leaf sun-dried green tea, which is directly steamed or fermented.