Squid is a kind of seafood, which is rich in protein. Seafood should not be eaten with fruits with high vitamin C content-this is a big taboo for eating seafood. Seafood food contains high concentration of pentavalent arsenic compounds, which will be converted into toxic arsenic when combined with a large amount of vitamin C. Eating 50 medium-sized apples at a time, or 30 pears, or 10 oranges, or eating green leafy vegetables above 1.5 kg raw is considered a high dose of vitamin C. As long as it does not exceed the above amount, there is no danger.