How to preserve tea?

Tea can be preserved for a long time according to the following methods.

First, arrange the tea leaves, put them into a special aluminum foil bag for food, squeeze out the air in the bag, seal the tea bag, put the tea leaves into the prepared tin can after sealing, cover it, and store the tea can in the freezer at the temperature of ~5℃, or put it in the freezer if you don't drink it for a short time.