I know I shouldn't mention this because many of my friends and family will hate me for it, but this is the closest I've come to seeing snow in China in the last three years (and it wasn't even winter).
These were the mountains on our second day in Jiuzhaigou--new snow on top when we awoke in the Tibetan village. The first day we couldn't even see the mountains behind all the clouds.
Today in Shenzhen it was mid-20s (that's Celsius to you Americans--it's fairly temperate). However, the gray skies didn't make it feel too warm.