First, you can't eat tomatoes with sugar while eating prawns. Prawn and tomatoes can be poisoned when eaten together.

Second, the dietary taboos of shrimp:

Shrimp+tomato: Arsenic will be poisoned.

Shrimp+watermelon: abdominal pain, diarrhea, nausea.

Shrimp+cherry tomato: Arsenic will be poisoned.

Shrimp+onion: calcium oxalate forms to produce stones.

Shrimp+grapes: unwell.

Shrimp+yam: Eating together can cause abdominal pain, nausea, vomiting and other symptoms.

Shrimp+black-bone chicken: poisoning.

Shrimp and papaya: abdominal pain, dizziness, food poisoning.

Shrimp+celery: It hurts.

Shrimp+pumpkin: Eating together will cause dysentery, and you can detoxify with black beans and licorice.