2. Passengers who use the second-generation ID card to purchase tickets on the website of China Railway Customer Service Center, and have the second-generation ID card ticket checking conditions at the bus station or the next station, can use the original second-generation ID card to directly check in at the automatic ticket checking machine at the station, without exchanging paper tickets. Otherwise, you need to exchange paper tickets in accordance with the relevant provisions of the inbound and outbound ticket checking procedures.