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.“

„Smoothness, Softness and Character of Puer Tea
Puerh tea is a type of post-fermented tea. When stored in the correct environment the tea, over time will change, hence - post-fermented. Due to this, the bitterness and astringency will slowly transform. The flavour will soften, become more mellow, rich, the character will become more rounded and mature.“