Crabs can't be killed before eating, because dead crabs can't be eaten, and dead crabs may be poisoned after eating, because dead seafood will be poisonous and there are some parasites. Of course, it doesn't mean that all dead seafood is inedible. But hairy crabs can't be eaten if they are dead.

Exactly, after washing with clear water, tie the crab firmly with a string, put the crab navel up in a steamer, put it in a pot with water, heat it until the water boils, turn off the fire after 15 minutes, and then stuffy for another five minutes. Just untie the rope and put it in the plate.

This is the practice of steaming hairy crabs.

I hope I can help you.