What is a "Guangyun Gong" 广云贡茶 (Guangdong & Yunnan Tribute Tea)
In the 1960s, Guangdong Tea Import and Export Corporation used the finest selection of sun dried Maocha for raw materials, and original technology to press tea cakes for export to Hong Kong, Macao, Taiwan and Southeast Asia. These tea cakes are primarily made of maocha from Yunnan and Guangdong blended using an original formula from Guangdong Tea Import and Export Corporation and processed with said factory's unique methods, therefore it has a distinctly Cantonese character or 'yun.' Taiwan and Hong Kong tea lovers call it "Guang Yun Gong cake," or Guangdong-Yunnan tribute tea cakes, and has become a representative of Guangdong's most famous teas.
Reviews/ experiences with Guangyun Gong can be found on weblogs: The Half-dipper and A Felicific Life.