好消息！电子发票可线下代开了！超全攻略奉上~

Group 1 - The article outlines the process for obtaining electronic invoices for train tickets, detailing steps for both passengers and purchasers [2][6][7] - Passengers can apply for invoices at ticket counters or automatic ticket machines using valid identification used during ticket purchase [2][6] - Purchasers or agents can also request invoices at ticket counters, either using the passenger's identification or the order number along with the purchaser's identification [2][7] Group 2 - The process includes scanning a QR code on the "scan invoice" document using the railway 12306 App to initiate the invoice issuance [3][8] - After scanning, users must complete relevant information and verify their identity to proceed with obtaining the electronic invoice [3][4] - Once verification is successful, users can select the train trips for which they wish to issue invoices [3][4]