You can rinse your mouth with strong tea after every meal, which will make you very tired and will not damage your spleen and stomach. If there is meat residue between your teeth, rinse your mouth with tea, and it will all disappear. You will come out before you know it, so don't choose. Moreover, teeth are bitter, and gargling with bitter tea can make teeth gradually dense, so moths can't invade, so drink inferior tea.
Children should not drink strong tea.
Because when the concentration of tea is high, the content of tea polyphenols is too high, which is easy to react with iron in food, which is not conducive to the absorption of iron and is easy to cause iron deficiency anemia in children. Children can drink some light tea in moderation (one-third of adult tea). For preschool children, you can drink some rough tea, because the content of tea polyphenols in rough tea is low.