Bullet Train or Flying?

Where will you depart for Xian? The high speed ride itself is good, comfortable and smooth. The point is you need to deal with the ticket in advance. Personally speaking, I think the most trouble-free option is have your paper ticket in hand in advance, then you only need go though the security check and wait in the waiting room. If this process worries you, you can just choose the flight and maybe another short round high speed trips just for experience if you are interested in it.