Hei (黑) translates into black and Cha (茶) translates into tea in English. Hei (黑) Cha (茶) is however not the traditional black tea in the English term. The western classification of black tea is equivalent to the 'red tea (红茶)' in Chinese. The Hei Cha is a class of Chinese teas with a unique characteristic of post-fermentation. They are classically aged, and the quality increases with the increase their age.