Hairy crabs are usually preserved in the following ways. If they are purchased in an ordinary vegetable market without binding and good vitality, they can be placed in an empty bucket, with a little water, so as not to overflow the crabs, and then placed in a ventilated and cool place, which can generally survive for 3-5 days; If crabs bought in supermarkets, brand stores/shops are bundled, you can sprinkle some water on the fresh-keeping layer of the refrigerator and cover it with a wet towel, which can generally survive for about 3 days.
Of course, whether crabs can last for a long time depends on the vitality of hairy crabs when they are purchased or after receiving express delivery. Those with weak vitality can be eaten first, and those with full vitality can be stored for a few days. Crabs may lose meat during storage. In short, it is recommended to eat them as soon as possible.