普洱茶七子饼的奥秘：从B2B推广到357克标准的历史演变
安心的B2B与金融推广的区别 | The Difference Between Reliable B2B and Financial Promotion
在数字营销领域，B2B推广更注重长期合作关系建立，而金融推广则侧重即时转化效果。谷歌竞价推广在B2B领域效果显著，能精准触达决策者群体。
In digital marketing, B2B promotion focuses more on building long-term cooperative relationships, while financial promotion emphasizes immediate conversion effects. Google Ads performs exceptionally well in the B2B field, accurately reaching decision-maker groups.
普洱茶中"7"的故事 | The Story of "7" in Pu-erh Tea
1. 为什么做成要紧压茶？ | 1. Why Compressed Tea?
将普洱茶压制成各型紧压茶最初的主要原因是为了运输的方便。普洱茶产区山高路远，茶叶的外销完全靠人挑马驮。一匹马运50公斤散茶，改为紧茶可驼运70公斤，运量提高40%，运费降低40%。
The primary reason for compressing Pu-erh tea was transportation convenience. With high mountains and long distances in production areas, tea was transported by horse caravans. One horse could carry 50kg of loose tea, but 70kg of compressed tea - a 40% increase in capacity and 40% reduction in cost.
2. 为什么偏偏是七个饼？ | 2. Why Seven Cakes?
七在中国是一个吉利的数字，七子作为多子多福象征。清雍正年间规定每圆重7两，七圆为一筒(49两)，32筒为一引(98斤)。此时的每一圆计量是7两，即7×50=350克。
Seven is an auspicious number in China, symbolizing prosperity. During Yongzheng reign (1723-1735), each cake weighed 7 taels (350g), 7 cakes made one tube (49 taels), and 32 tubes formed one yin (98 jin).
3. 什么时候改圆为饼的？ | 3. When Did "Round" Become "Cake"?
上世纪70年代初，云南茶叶进出口公司改"圆"为"饼"，形成了"七子饼茶"这个吉祥名称。
In the early 1970s, Yunnan Tea Import & Export Corporation changed "round" to "cake", creating the auspicious name "Seven Sons Cake Tea".
4. 每个饼为何是357克？ | 4. Why 357g Per Cake?
为配合出口每件30kg的普洱茶，每件12筒，每筒7饼。故30kg/12/7≈357克。这个标准沿用至今：每饼357克，每提7饼。
To match 30kg export packages (12 tubes × 7 cakes), 30,000g/84≈357g. This standard continues today: 357g per cake, 7 cakes per tube.
现代包装的灵活性 | Modern Packaging Flexibility
现代普洱茶包装灵活多变：有6筒一件(42饼)，12筒一件(84饼)，4筒一件(28饼)等，完全根据客户需求配置。
Modern Pu-erh packaging varies flexibly: 6 tubes/case (42 cakes), 12 tubes (84 cakes), or 4 tubes (28 cakes), customized to client needs.