2, because eating hairy crabs means eating a "fresh", and after the hairy crabs are placed in the frozen layer, because the temperature is below 0 degrees, they will freeze to death and are not fresh; In addition, after the raw hairy crabs are frozen, the crab meat will shrink, and the crab meat will become dry and unpalatable when it is taken out next time.
3. Cooked hairy crabs can be frozen, because cooked hairy crabs will not shrink after freezing. In the frozen layer environment of minus 4-24 degrees, microbial activities such as bacteria in crab meat can be effectively inhibited, which can ensure that hairy crabs will not deteriorate after being stored for 1-2 days. If you don't put it in the frozen layer, it will deteriorate in a few hours and you can't eat it.