[Eyeing it up from the other side of the screen, Idia seems rather bored at that question, then a little confused about why anyone would want a paper copy to read, but hey, whatever.] You'll need to print it off on a printer. Assuming there is one of those on the train. [Idia has no clue as he wouldn't even bother to use one.

Wait, he recalled having to explain stuff a bit more old school than he would normally, since Jingyi was from a different time.] A printer is like an automated printing press. [Was that... early enough for him? Idia's not sure.] Do you know what a printing press is? [Whatever.] Ah, you will need either a suitable cord to connect them, or use a wireless network, depending what the printer and ereader has as options, and that's even if they would recognize each other. [So much for keeping it simple.]