Pu-erh tea

„Nèi piào (内票): A larger description ticket or flyer packaged loose under the wrapper. Both aid in assuring the identity of the cake. It usually indicates factory and brand. As well, many nèi piào contain a summary of the tea factories' history and any additional laudatory statements concerning the tea, from its taste and rarity, to its ability to cure diseases and effect weight loss.“

„chui niu; 吹牛. 吹 - chui, to blow. 牛 - niu, cow, but in this case can be read as 公牛 or bull. An almost default aspect of tea drinking - 'shooting the bull'. The talk that often accompanies tea drinking and can be peppered with much knowledge, a little exaggeration and some humour. Also 吹牛皮. 皮 - skin or hide. 'Blowing the bulls hide.'“