Can the hard seat bought online be changed into a sleeper (not a paper ticket yet)

Hard seats bought online can be changed into berth tickets. On the premise that the railway has transportation capacity (that is, tickets can be sold), the change of the ticket only changes the boarding date, number of trains and number of seats (shops), and does not change the departure station and arrival station (except the station in the same city).

Under the premise of transportation capacity, other trains can be changed more than 48 hours (excluding) before departure during the pre-sale period; Within 48 hours before driving, you can change other trains before driving, or you can change other trains between 24:00 on the day of the ticket date after driving, without changing the ticket for the next day or after the ticket date; After driving, passengers can still change their tickets for other trains on the same day, but only at the ticket issuing station. Tickets changed after driving cannot be refunded.

Extended data:

"Interim Measures for Railway Internet Ticket Sales" Article 27 Railway e-tickets can be changed, changed or refunded on the website of 12306.cn or at the ticket window of the station.

Article 28 Passengers who have not exchanged paper tickets after purchasing tickets at 12306.cn can change their tickets, change stations or refund tickets at 12306.cn; Those who change paper tickets can only handle it at the station. Change and refund the ticket at 12306.cn website no later than 25 minutes before driving, and change the ticket no later than 48 hours before driving.

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