Before going to the airport, passengers should inquire about
backup seats. If it's capable, please go through the flight backup
formalities at the corresponding counter.
Passengers will fill in the backup-seat-booking applications at
the airport ticket office.
Passengers will inquire 30 minutes prior the flight's departure
about if the backup efficient.
If it's efficient, passenger will produce the valid identity
certificates.
The booking clerk will make a ticket according to the
passenger's valid identity certificates.
Pay money and take ticket.
(english.gov.cn October 20, 2006)