The first holds that it derived from the opening passage of the work by the Chinese writer, Lu Yu, entitled Chá Ching (Cha-kyo in Japanese, The Classic of Tea or Tea Classic in English), in which he writes "Tea is a good tree in the south".
Rather the steamed tea leaves were first pulverized into a paste form, with the paste then formed in moulds and slowly dried into brick tea, a technique well described by Lu Yu in his work "The Classic of Tea".