China Southern canceled seat selection.

China Southern Airlines may cancel the seat selection for the following reasons:

1. aircraft type change: for various reasons, airlines will change their flight plans, including changing the aircraft type used. If the reserved seats do not exist or do not meet the requirements on the new model, these seats may be cancelled automatically.

2. Seat replacement under special circumstances: In some cases, if passengers have special needs or need to adjust their seats, the selected seats may also be cancelled.

Please consult the official customer service of China Southern Airlines for the specific reasons for canceling the seat selection.