I am using to ctrip to try to purchase a ticket from Chengdu to Shanghai.

Nearly all of the tickets come with this condition:

"Limited to mail delivery and Chengdu local delivery or pickup.Airport ticket pickup available." The tickets list no other restrictions (e.g., age), other than having various penalties for changes.

I haven't received an airline ticket by anything other than email in 10 years. Does this warning matter and would I actually need to pick up a ticket at the airport in Chengdu?