Chinese people are believed to have enjoyed tea drinking for more than 4,000 years. In Zhou Dynasty, tea was used as an herbal medicine. During the Western Zhou Dynasty, it was a religious offering. And during the Spring and Autumn Period, people ate fresh tea leaves as vegetables. With the popularization of Buddhism from the Three Kingdoms to the Northern and Southern Dynasties, its refreshing effect made it a favorite among monks in Za-Zen meditation.Unitl to Tang Dynasty,Tea as a drink became popular.