1. Black tea is a kind of fully fermented tea, which is refined through a series of technological processes such as withering, rolling (cutting), fermentation and drying.

2. Black tea is named for its red tea soup and leaf background. Black tea has the characteristics of tea red, soup red, leaf red and sweet taste. Black tea is mainly produced in China, Sri Lanka, Indian, Indonesian and Kenyan, and Qimen black tea is one of the most famous black teas in China.