8. I lost my boarding pass for overseas travel, the airline cannot issue the boarding pass, and there is no way for automatic customs clearance, so can I use the agent's certificate instead?
A: If you lose the stub of your boarding pass and cannot get a copy of your passport or airline's flight certificate to prove the fact of your departure, the traveler can issue a certificate stating the reason for not being able to present the original and sign it according to the regulations.