It cannot be eaten directly, it needs to be heated, steamed or fried alive.

Seafood such as shrimps and crabs are inherently cold, and refrigeration will aggravate the cold effect. If eaten directly, it can cause stomach discomfort. So it needs to be heated before it can be eaten. It is best to eat it with some warm ingredients, such as minced ginger and minced garlic, to offset the cold nature of seafood.