It’s a lot of triangles. He’s just covered the page with them. You can’t make any sense of them.
But maybe Ash can – he knows at least something about where this kid came from. You show him the sheet.
“Got any ideas about that, Ash?”
“It’s just a lot of triangles,” he mutters, then pauses for a moment as a realization dawns. “Which, come to think of it, is what this kid’s city looked like. Almost all the buildings were very triangular.”
“Oh. So he’s just homesick, then?”
Ash takes another glance at the sheet.
“That would make sense, but I don’t think so. I think he’s trying to get across the idea of a city for some reason, and as far as he knows this is what cities look like.”
Hmm. Seems you might have to ask him to clarify with another drawing. But you’ll have to think carefully about how to word your question.