How to buy tickets for Shanghai Qing 'an Line?

I'm sorry, I don't know the specific ticket purchasing method of Shanghai Qing 'an Line, because different transportation operators may have different ticket purchasing methods. However, I can give you some advice:

1. You can go to relevant ticketing websites or mobile phone applications, such as 12306. Inquire about relevant information and buy tickets for Shanghai Qing 'an Line.

2. You can also go to the local ticket window or the sales point to consult and buy tickets.

Please note that you need to provide valid personal information and payment methods when purchasing tickets in order to successfully purchase tickets. At the same time, you need to choose the seat level, train number and other related options according to your needs. If you need more help, you can ask the local ticket seller.