High-end Pu 'er raw tea. 202 1 China Tea Peacock Banzhang (six-star blue brick) is another high-end raw Pu 'er tea in China. It is made of high-quality tree raw materials from the core production area of Banzhang, Yunnan, after five years of natural air drying and aging in Kunming. It is made by traditional steaming method. Dry tea has a blue smoke rhyme and can be drunk immediately, leaving room for later aging.