What if I buy a ticket online and say my ID card has been stolen?

I also encountered this problem and went to consult it specially. The reason is that according to the current railway system settings, if a user's ID card has been purchased by more than five accounts, it will default to "information is suspected of being stolen". This is a technical means to prevent scalpers from using software to steal other people's information and scalping tickets. After being "locked", the ID card holder must complete the identity verification at the nearest station for passenger ticket sales before he can handle the ticket purchase business online. So if you often ask someone to buy it for you, it means your own problem. If you only have a fixed account, your information has indeed been stolen. After you go to the railway station to check, ask if you can delete the information on other accounts. It is recommended that you use a fixed account to buy tickets online as much as possible, and try to book tickets through the fixed account of your work unit for frequent business trips.