One fairly random photo of Chinese characters in action, per week, until sometime in 2018. And perhaps longer if I'm encouraged. Those who want to contribute their own random photos of Chinese characters are welcome, just get in touch and I'll add you to the contributor list so you can post directly, from computer or phone.
This was at, I think, Badaling. I recall one customer asking what would happen if someone was desperate and had no money: "We'd let them use it, of course. We're all human."