Myrica rubra is slightly acidic, the outer layer of teeth is called enamel, and the inner layer of enamel is called pulp. Some people eat when acid water touches the pulp, which is full of nerves, of course it will be sour! Therefore, China's online cookbooks remind patients with peptic ulcer to eat carefully. People with toothache, hyperacidity and excessive internal heat should not eat more, and diabetics should not eat more. Eating too much bayberry is easy to produce sore poison, which encourages hot air. People with excessive phlegm and excessive heat should not eat it, let alone eat it with raw onions.