What do you mean by air tickets? Ticket description.

1, a through flight is two segments of different airline segments purchased by passengers and bound together. You can get two boarding passes from the departure station, and you don't have to take your luggage out. You can check it directly to your destination to get your luggage.

The next stop of the joint flight ticket may not be your airline, but if you want to transfer, the airport staff will help you move your luggage to the next plane according to your luggage destination.