Tea is official and ordinary people can't operate it.
Later, China's tea was mainly used for export in exchange for foreign exchange. Few people buy and sell tea.
At that time, the industry was underdeveloped, mainly relying on specialty products.
Now the times are different, and the export of industrial products can be exchanged for foreign exchange, so the export is transferred to domestic sales. Develop a free economic market.
The state can't monopolize everything, and salt will be sold soon.
However, at present, the state still controls the tea sold on the border, such as Inner Mongolia, because it is a necessity for them, and the state should regulate the price.