Keemun is produced in the Qimen County of Huangshan Shi, in Anhui (Anhwei) province of China. "Keemun" was actually the English spelling for "Qimen" during the colonial era.
Keemun has a relatively short history. It was first produced in 1875 by a failed civil servant, Yu Quianchen, after he traveled to Fujian province to learn the secrets of black tea production. Prior to that, only green tea was made in Anhui. The result exceeded his expectations, and the excellent Keemun tea quickly gained popularity in England, and became the most prominent ingredient of the English Breakfast tea blend.