Okay, my colleague let me use his computer to get my photos from Xiahe off my digicam, so I've posted a few in my gallery.
What happened is that, for some strange reason, it snowed. I'm not kidding - it was the first of May, and it snowed. I learned later on that this meteorological anomaly occurred throughout Gansu and Qinghai. Anyway, that's why the photos look like they were taken in Wintertime.