You can't drink tea after eating persimmons. Many Chinese people have the habit of drinking tea after meals to help digestion. They also have the habit of eating fruits after dinner. It's not a big deal to eat fruits and tea together, but persimmons and tea are not suitable. Persimmons contain a substance called tannic acid, while tea contains a lot of theophylline. Under the action of stomach acid, these two substances will have a chemical reaction, producing indigestible hard lumps, leading to gastrointestinal discomfort, stomach pain, intestinal flatulence, affecting the digestive function, and even leading to gastric bleeding in serious cases.