Cheng Shan Xiao Seed can't be drunk in 6 years. Zhengshan Xiao Seed as a black tea, in the production of 2 to 3 years to drink, in order to enjoy its best flavor and aroma, Zhengshan Xiao Seed shelf life labeled as 24 months, 6 years the tea is prone to moisture, mildew or deterioration, the tea not only to lose the original quality and taste, but also to human health hazards. Zhenshan Xiao Seed, also known as Lapu Shan Xiao Seed, is a black tea, by Fujian Wuyi Mountain deep Han tea farmers in the Ming Dynasty in the mid-to-late chance to create, Zhenshan Xiao Seed black tea is the world's earliest black tea, also known as the originator of black tea, deep in Fujian Wuyi Mountain, Fujian Province, the local tea farmers in the mid-to-late Ming Dynasty, first invented, has a history of more than 400 years.