(2) Friends who prefer window seats can ask the handlers to arrange window seats for you when changing their boarding passes. Usually no problem, unless you are late, the seat is arranged for others.
(3) When checking baggage, some airports will charge an insurance premium of about 10 yuan, such as Fuzhou Airport; If your suitcase is unlocked, some airports will force you to spend 5 yuan to buy a small lock, such as Guangzhou airport.
(4) When carrying a fruit knife, it is best to check it in the luggage, otherwise 90% may be confiscated. In addition, small animals can't be brought on the plane, and they can only be checked with quarantine certificates, which is very troublesome. Potted plants and flowers are ok.
(5) The check-in voucher is generally posted on the air ticket. When the baggage arrives and is taken out, the staff will check whether the check-in voucher matches the label on the baggage. Be careful not to take someone else's and lose yours.