Puerh History - Pu-erh.Net

„The most classical Puerh Tea is the Bingcha, recorded in Yong-Zheng 13th year in Qing Dynasty (1735). Each tea cake weighs 7 Liang (357 grams). Seven cakes make 1 Tong (wrapped in leaves), weighing 49 Liang. It was sold in nice places and also was exported abroad. It was re-named as "Yunnan Qizi bingcha - Yunnan seven cake tea" during the Cutural revolution.“

„The best test is if, when drinking tea, there are any of prickling, tingling, numbing sensations on or near the tip of the tongue. If this is so one can be reasonably certain that agro-chemicals are present.“