After the ticket is booked, can I change it to someone else?

This is to change the ticket, look at the agreement when booking the ticket. For tickets booked by Ctrip, you can find the refund and change policy on the order page. Generally, domestic tickets with a discount of more than 50% are allowed, but there is a fee for rebooking, and those with a discount of less than 30% are basically not refundable.