Self-service: Log in to the Air China app, check in, and
use the ticket change function to complete flight changes.
Manual service: Go to the "Comprehensive Service Counter"
opposite boarding gate B213 in Terminal 1 of Guangzhou Baiyun International
Airport.
Beijing

Guangzhou Express Line supports eligible Air China tickets to be changed to
the flights actually operated by Shenzhen Airlines (codeshare with Air
China).