Placed in a cool, ventilated place, they can stay fresh for 6-8 hours. If the weather is hot, then it is best to put them in the refrigerator freezer, so that the crabs at noon can be kept until the evening, but not overnight. If you want to store cooked crabs for a long time, such as overnight, put them in the freezer.

But direct freezing tends to cause cooked crabs to lose moisture and become dry and unpalatable. When freezing, you can freeze them with the soup in which the crabs were cooked to better preserve their fresh flavor.

Expanded information;

Precautions for eating crabs

Choose fresh, live crabs and don't eat raw or drunken crabs. Crabs are omnivores and even eat the carcasses or humus of other animals, and its body surface, gills and gastrointestinal tract are covered with all kinds of bacteria, sludge, and may even have parasites. So before eating crabs must be brushed and cleaned, do not eat gills, intestines and other internal organs, and must be steamed and boiled thoroughly before eating.

Don't eat too much. Crab contains protein and cholesterol in the crab yolk is relatively high, an excessive consumption is not conducive to the body's digestion and absorption, so the average person eating crab should not be more than 1 catty each time, should not be more than 3 times a week.

Reference source; people.com.cn - steamed crab can not be overnight, the crab can not eat the end of how to put?