Okay this is a bit of a long shot but...
I used to play GITS: SAC: First Assault Online a fair bit, one of the few online competitive shooters I actually enjoyed tbqh. One of the levels had this weird sign that was covered in chinese writing. Google Translate fails utterly with it, so I wonder if anybody might be able to have a crack at it, or figure out what it might say, as I can find nothing.
@joshua yeah, looking at this, there's also hangul and kanji in there dotted around. :o