Please provide the rest of the info asked in https://retropie.org.uk/forum/topic/3/read-this-first.

You should upload the gamelist.xml for the system where the faulty files reside, to make sure it's not been incorrectly generated.

wow!thanks all you guys! I fixed this problem.i used those command：

sudo apt-get update
sudo apt-get install fonts-droid-fallback
sudo reboot

and i changed theme‘s font file to chinese font.

ps: If you rom file name not enghish,DO NOT use usbway to copy roms.Because the rom name will be like that：“？？？？”no matter what you do.

@Sendoushi

You'll probably need to get a different screen at the minimum, as those usually use something proprietary and you won't see drivers readily available. It's tough to gauge how much room is inside the case, but it might work. PSPs have been modded before, and this is essentially a knock-off of that.