What you want to ask is whether osmanthus tea is as long as possible? The longer the better. Osmanthus tea is relatively resistant to storage. The longer the storage time, the more mellow the taste. Attention should be paid to sealed storage, and special attention should be paid to moisture protection during storage. If properly preserved, it can generally be preserved for more than three years. Guicha is oolong tea made from fresh leaves of Cinnamomum cassia seed tea tree and Wuyi rock tea, and it is a highly fragrant variety in Wuyi rock tea.