Xuan He Bei Yuan Gong Cha Lu

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Xuan He Bei Yuan Gong Cha Lu(宣和北苑贡茶录,Record of Xuan He Era Tribute Tea in The North Farm ).

This tea treatise by Xiong Fan(熊蕃) contained detailed description of the names of various tribute tea cakes, on their packaging, some with dimension data, for example "Longevity Dragon cake, silver mould, bamboo frame, one inch diameter" "Eternal Spring Jade Leave, bamboo frame, diameter 3 1/2 inch".