Recently I found some old puerh tea in my store room. I must have bought them many years ago. There is a purth brick where the tea label had faded. I have no way to tell what was written on the tea label. Judging from the size of the tea leaves, it must have come from a puerh tea tree.
There is this puerh toucha. The square label zhong character can be seen clearly. As the label is smaller than those found on thd toucha made in the 1980s, I guess this type of toucha could well be from the 1960s.