This is about the knowledge of air tickets.
The text covers electronic and manual air tickets, ticket issuance precautions, coupon types, ticket content fields, usage restrictions, code sharing, and common booking status terms.
It also includes numbered review questions on ticket validity periods, time fields, booking references, and booking status abbreviations. This manual is written in Chinese.
An electronic ticket stores ticket data in the airline's database and does not require printing a ticket for each journey.
A ticket must not be altered; alteration makes it invalid.
It means no stopover is allowed, and the passenger must fly to the next destination within 24 hours.
Code sharing means multiple airlines jointly operate a route, while the flight is executed by one airline.