Seriously, I always asked this question. I only see those chinese/asian symbols when switching into/from windowed mode.
Somebody really knows why they are there?
CRPG has a built-in Chinese font pack which enables players using Chinese version of the game to see Chinese letters instead of spaces. I think it might be a small glitch in the WSE2 engine so that those letters are mistakenly shown. I don't know really, but can you take a screen shot? That might help a bit...