Puer Tea Glossary - Zhi Zheng Tea Shop

„tong feng; 通风 - air-flow. Puer should be stored somewhere where there is a little air movement - it doesn't need to be much. Even if it is quite humid, the airflow will guard against tea developing mould. However, care should be taken that tea is not stored in a draft which will dry the tea tea out.“

„In 1940, the Chinese State owned company CNNP started to manufacture Pu Erh Tea with a trademark "Zhong-Cha" at the Fo-Hai Tea Factory (now called "Meng-Hai Tea Factory"). Later, Yun-Nan Tea Company and Guang-Dong Tea Company also produced the same brand and started to export abroad. There were varieties such as red-label, green-label, yellow-label, small-letter and big-letter etc.“