This is because airlines have strict regulations on what passengers carry with them, especially for perishable items, such as fresh hairy crabs. In order to ensure the safety and hygiene of flights, airlines require passengers to check such items as checked baggage. This can avoid the adverse effects of articles in the cargo hold of the aircraft. Hairy crabs need to be properly packed before shipment to avoid damage during transportation. At the same time, it is necessary to ensure the freshness of hairy crabs, and do not place them in a humid and sultry environment, so as not to affect their quality. When handling the consignment formalities, hairy crabs should be separated from other luggage so that the staff can handle them specially.