Can you tell me if there is anything in my suitcase that can't be checked?

If there is something in the suitcase that cannot be checked, the airport security check will not tell the passengers directly, but when the passengers enter the security check area, they will see the staff scanning and checking the luggage. If contraband or non-conforming items are found, the security personnel will handle them accordingly, including asking passengers to open their suitcases for inspection, asking passengers to give up their items or asking passengers to send them back to relatives and friends. Therefore, if there is something in the suitcase that cannot be checked, passengers need to know the relevant regulations in time and take the initiative to tell the staff to avoid unnecessary trouble.